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design of polyacrylamide hydrolysis

  • Theoretical studies of hydrolysis and stability of ...

    2015-11-1 · Water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers are among the most commonly used chemicals in oilfield applications. In polymer-augmented water-flooding Enhanced Oil Recovery (EOR) processes, HPAM polymers are often used as mobility-control agents to increase the viscosity of stimulation fluids in order to improve the sweep efficiency …

    Get Price
  • Thermal gelation of partially hydrolysed

    2019-12-1 · In this paper, a statistical analysis on the thermal gelation of well characterized reactants namely partially hydrolysed polyacrylamide (PHPA) (Mw = 5.1 million Daltons and hydrolysis degree = 6%) and polyethylenimine (PEI) (Mw = 19.2 kilo Daltons and branching degree = 59%), was conducted using response surface methodology (RSM).

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  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil conditioning. 1, 9, 12,...

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  • Effect of the degree of hydrolysis of polyacrylamide

    1991-10-1 · Effect of the degree of hydrolysis of polyacrylamide on its interactions with poly (ethylene oxide) and poly (vinylpyrrolidone) Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to ...

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  • Polyacrylamide Gel-Entrapped Maltase: An Excellent

    2013-7-27 · By controlling the hydrolysis time, a series of hydrolyzed polyacrylamide grafted carboxymethyl cellulose (CMC-g-HPAM) with different degree of hydrolysis (DH) was obtained. The structure and solution properties of the final copolymers were characterized by Fourier transform infrared (FTIR), 1 H nuclear magnetic resonance ( 1 H NMR) spectra, zeta potential (ZP) and elemental …

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  • Effect of hydrolysis degree of hydrolyzed

    Polyacrylamide (PAAm) hydrogels are widely used and studied. Their feature of hydrolysis is often ignored. When PAAm hydrogels are stored under an alkaline condition, they can undergo a hydrolysis...

    Get Price
  • Hydrolysis-induced large swelling of polyacrylamide ...

    Polyacrylamide-based polymers are known to hydrolyze at high temperatures causing gel syneresis (expulsion of water out of the gel structure due to over crosslinking) (Moradi-Araghi 2000 ...

    Get Price
  • Thermal gelation of partially hydrolysed

    2021-3-12 · Determination of the critical concentration of partially hydrolyzed polyacrylamide by potentiometry in an acidic medium. Journal of Applied Polymer Science 2012, 213 , n/a-n/a. https://doi.org/10.1002/app.38310; Sui Xihua, Zha Qingfang, Wu Mingbo, Guo Yansheng.

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  • Determination of polyacrylamide by

    2021-6-13 · 34 polymers composed of polyacrylamide (PAM) (Taylor et al., 2002). PAM is a polymer with high 35 molecular weight, synthetized from acrylamide (AMD) and acrylic acid/acrylate (AA) (Scott et al., 1996; 36 Caulfield et al., 2002). The use of flocculants enables to …

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  • Chemical and Photolytic Degradation of Polyacrylamides ...

    2004-11-12 · Figure 2.2 Acidic hydrolysis of polyacrylamide 9 Figure 2.3 Alkaline hydrolysis of polyacrylamide 9 Figure 3.1 Diagram of the experiment design 21 Figure 4.1 Decrease in permanganate residual after oxidation of 10 mg/L Clarifloc C-3280 (KMnO 4 dose at 6 mg/L) 35

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  • Hydrolysis-induced large swelling of polyacrylamide ...

    2020-9-7 · Hydrolysis-induced large swelling of polyacrylamide hydrogels. Polyacrylamide (PAAm) hydrogels are widely used and studied. Their feature of hydrolysis is often ignored. When PAAm hydrogels are stored under alkaline conditions, they can undergo a hydrolysis reaction, which changes them from neutral hydrogels to polyelectrolyte hydrogels ...

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  • Comparative studies of rheological properties of ...

    2006-11-22 · The present work is concerned with experimental results of rheological characteristics of polyacrylamide (PAM) and of partially hydrolyzed polyacrylamide (HPAM) (degree of hydrolysis up to 80%) in aqueous and aqueous/sodium chloride solutions with changing experimental conditions such as polymer concentration, temperature, solvent quality, and shear rate applied.

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  • Determination of polyacrylamide by

    2021-3-12 · Determination of the critical concentration of partially hydrolyzed polyacrylamide by potentiometry in an acidic medium. Journal of Applied Polymer Science 2012, 213 , n/a-n/a. ... A review of methods for the determination of concentration and degree of hydrolysis. Journal of Petroleum Science and Engineering 1994, 12 (1) , ...

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  • Transfer and degradation of polyacrylamide based ...

    2021-6-13 · 1 Title: Transfer and degradation of polyacrylamide based flocculants in hydrosystems: a review 2 3 Authors: A. G. Guezennec1, C. Michel1, K.Bru1, S. Touze1, N. Desroche2, I. Mnif3, M. Motelica-Heino4 4 1 BRGM 5 2 Nexidia SAS, 15 Rue de Mayence 21000 DIJON France 36 Université de Nice 7 4 ISTO, UMR 7327 CNRS-Université d’Orléans, 1A rue de la Férollerie, 45071 Orléans cedex 2

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  • ACRYLAMIDE AND POLYACRYLAMIDE - IHS Markit

    Report No. 99 ACRYLAMIDE AND POLYACRYLAMIDE by YEN-CHEN YEN e June 1976 a A private report by the PROCESS ECONOMICS PROGRAM l STANFORD RESEARCH INSTITUTE

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  • Waste-Activated Sludge Fermentation for

    2015-7-6 · Polyacrylamide (PAM), a linear water-soluble polymeric compound with a high molecular weight, is widely used in wastewater treatment processes 1,2, …

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  • Waste-Activated Sludge Fermentation for

    During the anaerobic digestion of dewatered sludge, polyacrylamide (PAM), a chemical conditioner, can usually be consumed as a carbon and nitrogen source along with other organic matter (e.g., proteins and carbohydrates in the sludge). However, a significant accumulation of acrylamide monomers (AMs) …

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  • Chemical and Photolytic Degradation of Polyacrylamides ...

    2004-11-12 · Figure 2.2 Acidic hydrolysis of polyacrylamide 9 Figure 2.3 Alkaline hydrolysis of polyacrylamide 9 Figure 3.1 Diagram of the experiment design 21 Figure 4.1 Decrease in permanganate residual after oxidation of 10 mg/L Clarifloc C-3280 (KMnO 4 dose at 6 mg/L) 35

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  • Hydrolysis-induced large swelling of polyacrylamide ...

    2020-9-7 · Hydrolysis-induced large swelling of polyacrylamide hydrogels. Polyacrylamide (PAAm) hydrogels are widely used and studied. Their feature of hydrolysis is often ignored. When PAAm hydrogels are stored under alkaline conditions, they can undergo a hydrolysis reaction, which changes them from neutral hydrogels to polyelectrolyte hydrogels ...

    Get Price
  • Waste-Activated Sludge Fermentation for

    The response surface methodology (RSM) was applied to optimize PAM removal (i.e., amide hydrolysis) during the anaerobic digestion of sludge. To minimize the influence of uncontrolled variables on the RSM, five-level, three-variable central composite design (CCD) experiments with 20 runs were randomly conducted to optimize the initial pH (X 1), PAM amount (X 2) and fermentation time (X 3) to ...

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  • Experimental Studies, Modeling and Numerical

    The hexamine on hydrolysis yields formaldehyde which then combines with pyrocatechol and form 3, 4, 5, 6-tetramethylol pyrocatechol. Further, partially hydrolyzed polyacrylamide reacts with 3, 4, 5, 6-tetramethylol pyrocatechol and forms three dimensional networks of polymer gel, the different steps of which are as follows: Step I

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  • (217ay) Effect of Salts On Polyacrylamide Hydrolysis

    2013-11-4 · CCPS Center for Chemical Process Safety ; RAPID RAPID Manufacturing Institute ; DIPPR Design Institute for Physical Properties ; SBE Society for …

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  • ACRYLAMIDE AND POLYACRYLAMIDE - IHS Markit

    Report No. 99 ACRYLAMIDE AND POLYACRYLAMIDE by YEN-CHEN YEN e June 1976 a A private report by the PROCESS ECONOMICS PROGRAM l STANFORD RESEARCH INSTITUTE

    Get Price
  • Polyacrylamide in Oilfield - Sinofloc Chemical

    Downloadable! The water-soluble polymer PAM (polyacrylamide) is used in enhanced oil recovery (EOR) operations. It is pumped into water injection wells to increase the viscosity of the injected water and in turn to direct more oil towards production wells. This EOR process is proven to be sensitive to operational well conditions such as hydrocarbon reservoir temperature, as well as the ...

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  • Studying the Effectiveness of Polyacrylamide (PAM ...

    The incorporation of Polyvinylpyrrolidone (PVP) effectively protects polyacrylamide (PAM) against thermal hydrolysis by drastically reducing the degree of hydrolysis of pure PAM from 75% to 29.9% with associated increases in viscosity from 11 to 38.2 mPa.s and from 18 to 44.3 mPa.s corresponding to rotational speeds of 30 and 10 r.p.m ...

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  • Application of polymer integration technique for

    2019-10-26 · Protein hydrolysis at pH 5 was 2–25 times slower than at pH 7. Shifting the initial pH from neutral to acidic conditions (pH 5) inhibited protein degradation and changed the volatile fatty acids (VFA) product profile. Furthermore, the presence or absence of methanogenic activity did not affect the rates of protein hydrolysis and acidification.

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  • Modeling of Partially Hydrolyzed Polyacrylamide

    The hexamine on hydrolysis yields formaldehyde which then combines with hydroquinone and form 2,3,5,6-tetramethylol hydroquinone. Further, partially hydrolyzed polyacrylamide reacts with 2,3,5,6-tetramethylol hydroquinone and forms three dimensional networks of polymer gel, the different steps of which are as follows. Step I.

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  • (217ay) Effect of Salts On Polyacrylamide Hydrolysis

    2013-11-4 · CCPS Center for Chemical Process Safety ; RAPID RAPID Manufacturing Institute ; DIPPR Design Institute for Physical Properties ; SBE Society for …

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  • Experimental Studies, Modeling and Numerical

    The hexamine on hydrolysis yields formaldehyde which then combines with pyrocatechol and form 3, 4, 5, 6-tetramethylol pyrocatechol. Further, partially hydrolyzed polyacrylamide reacts with 3, 4, 5, 6-tetramethylol pyrocatechol and forms three dimensional networks of polymer gel, the different steps of which are as follows: Step I

    Get Price
  • CCT Case Study - Cation Friendly Anionic Polymer Use

    2020-10-3 · Polyacrylamide Use: Anadarko ... polymer development, synthesis and molecular design which intrinsically affect the solubility, thermo‐ ... harnessed by partially hydrolyzing the polyacrylamide. Hydrolysis is performed by reacting the polyacrylamide polymerization with an acrylic acid. The end products of the reactions are summarized in Figure 1.

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  • Equilibrium swelling, conductivity and electroactive ...

    2010-1-18 · polyacrylamide hydrogels Rahna K Shamsudeen, Shiny Nair & V G Jayakumari* ... necessary condition for optimizing the design of new materials for specific technological applications. Experimental Procedure ... extent of hydrolysis for highly crosslinked systems.

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  • Combinatorial Polyacrylamide Hydrogels for Preventing ...

    2020-5-25 · Design of Combinatorial Library of Polyacrylamide Hydrogels for Anti-biofouling Here we first sought to investigate the ability of a large library of chemically distinct polyacrylamide copolymer hydrogels to mitigate blood protein and platelet adhesion (Fig. 1a).

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  • Polyacrylamide in Cement Concrete Modification -

    Polyacrylamide can be used to modify the cement concrete in order to improve its flexural strength, its bond strength and its flexural toughness, and its abrasion resistance has a significant effect, it can reduce the crushing ratio, the permeability and the contractility.. Along with the increase in traffic and overloading phenomenon, the destruction of the pavement and bridge deck pavement ...

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  • (PDF) Preparation of ion-exchange membranes by

    Preparation of Ion-Exchange Membranes by Hydrolysis of Radiation-Grafted Polyethylene-g-Polyacrylamide Membranes Bhuvanesh Gupta,1 Nishat Anjum1,2 1 Department of Textile Technology, Indian Institute of Technology, New Delhi-16, India 2 Department of Applied Chemistry, Delhi College of Engineering, Bawana Road, Delhi, India Received 12 March 2001; accepted 7 January 2003 …

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  • SurePAGE™, Bis-Tris, 10x8, 4-20%, 12 wells Molecule ...

    The unique formulation of the gel and cassette design enables superior band resolution and significantly improved band evenness. SurePAGE gels are cast in a neutral pH buffer that minimizes polyacrylamide hydrolysis, increases gel stability and minimizes protein modification.

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  • Determination Of Clips Generated by Acid Hydrolysis of ...

    2021-3-19 · Study design In the first step, we optimized the experimental conditions to induce forced hydrolysis of Cipla 302 with different concentrations (0.1 N to 3 N) of HCl solutions. Rapid precipitation of the monoclonal antibody (mAb) was observed upon incubation in 3 N HCl solution.

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  • Theoretical studies of hydrolysis and stability of ...

    2015-11-1 · Water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers are among the most commonly used chemicals in oilfield applications. In polymer-augmented water-flooding Enhanced Oil Recovery (EOR) processes, HPAM polymers are often used as mobility-control agents to increase the viscosity of stimulation fluids in order to improve the sweep efficiency …

    Get Price
  • Thermal gelation of partially hydrolysed

    2019-12-1 · In this paper, a statistical analysis on the thermal gelation of well characterized reactants namely partially hydrolysed polyacrylamide (PHPA) (Mw = 5.1 million Daltons and hydrolysis degree = 6%) and polyethylenimine (PEI) (Mw = 19.2 kilo Daltons and branching degree = 59%), was conducted using response surface methodology (RSM).

    Get Price
  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil conditioning. 1, 9, 12,...

    Get Price
  • Effect of the degree of hydrolysis of polyacrylamide

    1991-10-1 · Effect of the degree of hydrolysis of polyacrylamide on its interactions with poly (ethylene oxide) and poly (vinylpyrrolidone) Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to ...

    Get Price
  • Polyacrylamide Gel-Entrapped Maltase: An Excellent

    2016-2-4 · Bacterial maltase catalyzes the hydrolysis of maltose and is known as one of the most significant hydrolases. It has several applications in different indu Polyacrylamide Gel-Entrapped Maltase: An Excellent Design of Using Maltase in Continuous Industrial Processes | SpringerLink

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  • Effect of hydrolysis degree of hydrolyzed

    2013-7-27 · By controlling the hydrolysis time, a series of hydrolyzed polyacrylamide grafted carboxymethyl cellulose (CMC-g-HPAM) with different degree of hydrolysis (DH) was obtained. The structure and solution properties of the final copolymers were characterized by Fourier transform infrared (FTIR), 1 H nuclear magnetic resonance ( 1 H NMR) spectra, zeta potential (ZP) and elemental …

    Get Price
  • Hydrolysis-induced large swelling of polyacrylamide ...

    Polyacrylamide (PAAm) hydrogels are widely used and studied. Their feature of hydrolysis is often ignored. When PAAm hydrogels are stored under an alkaline condition, they can undergo a hydrolysis...

    Get Price
  • Thermal gelation of partially hydrolysed

    Polyacrylamide-based polymers are known to hydrolyze at high temperatures causing gel syneresis (expulsion of water out of the gel structure due to over crosslinking) (Moradi-Araghi 2000 ...

    Get Price
  • Determination of polyacrylamide by

    2021-3-12 · Determination of the critical concentration of partially hydrolyzed polyacrylamide by potentiometry in an acidic medium. Journal of Applied Polymer Science 2012, 213 , n/a-n/a. https://doi.org/10.1002/app.38310; Sui Xihua, Zha Qingfang, Wu Mingbo, Guo Yansheng.

    Get Price
  • Transfer and degradation of polyacrylamide based ...

    2021-6-13 · 34 polymers composed of polyacrylamide (PAM) (Taylor et al., 2002). PAM is a polymer with high 35 molecular weight, synthetized from acrylamide (AMD) and acrylic acid/acrylate (AA) (Scott et al., 1996; 36 Caulfield et al., 2002). The use of flocculants enables to …

    Get Price
  • Retention Of Polyacrylamide By Berea Sandstone,

    Surface charge and accessible surface area control the retention of polyacrylamide by berea sandstone, baker dolomite, and sodium kaolinite. Hydrolysis of polyacrylamide increases retention by materials with polyacrylamide increases retention by materials with a positively charged surface, such as dolomite, and decreases retention, when surface area remains constant, on materials with ...

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  • Polymer flooding - CHINAFLOC

    2017-3-8 · By addition of a salt to the eluent, the large increase was observed for the elution volume of the partially hydrolyzed polyacrylamide. This feature was applied to the detection and the separation of the anionic polymers in the technical products of polyacrylamide.

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  • DETECTION OF ANIONIC POLYACRYLAMIDE BY GPC |

    2019-9-30 · Previous investigations have found that alkaline hydrolysis of a polyacrylamide hydrogel stochastically (and therefore uniformly) introduces ionic residues into the gel network by converting nonionic primary amide side chains to carboxylates with counterions, which would increase π ion. 32, 33 Coincidentally, this “hydrogel conversion ...

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  • Scalable and Isotropic Expansion of Tissues with

    Pancreatic lipase has been immobilized onto stainless steel beads by adsorption followed by crosslinking, and onto polyacrylamide by covalent bonding. The activities of the two types of immobilized enzyme toward the particulate substrate, tributyrin emulsion droplets, were determined experimentally, and rate constants based on Michaelis‐Menten kinetics were calculated.

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  • Hydrolysis of particulate tributyrin in a fluidized lipase ...

    2004-10-1 · Tris(diisopropyl‐1,4,7‐triazacyclononanes)ethane (2) associated with Cu2+ and Ce4+ ions shows better reactivity to achieve DNA hydrolysis at 37 °C at pH 8 for 5 hr. Using high resolution of polyacrylamide gel electrophoresis, DNA cleavage reaction in Tris‐HCl buffer causes a nicking site at the single‐stranded region.

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  • DNA Hydrolysis Catalyzed by Tris(diisopropyl‐1,4,7 ...

    2017-5-18 · Drug targeting to specific organs and tissues is one of the crucial endeavors of modern pharmacotherapy. Controlled targeting at the site of action and reduced time of exposure of nontargeted tissues increase the efficacy of the treatment and reduce toxicity and side effects, improving compliance and convenience. Nanocarriers based on the branched copolymers dextran-graft-polyacrylamide were ...

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  • Development of a Polyacrylamide-Based Mud

    2015-5-6 · Enzymatic hydrolysis of Bambara bean protein concentrate was investigated with the view to produce hydrolysates with desirable functional properties. A Box–Behnken design was used for experiments and models capable of predicting functional properties depending on hydrolysis …

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  • Hydrolysis of polyethyleneterephthalate by p ...

    2011-3-23 · Biocatalysts and Bioreactor Design. Hydrolysis of polyethyleneterephthalate by p-nitrobenzylesterase from Bacillus subtilis. ... The 3PET-hydrolase was isolated from non-denaturating polyacrylamide gels using fluorescein diacetate (FDA) and identified as BsEstB by LC-MS/MS analysis.

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  • Synthesis and characterization of porous hydrogel

    2021-6-30 · Full Article. Synthesis and Characterization of Porous Hydrogel Based on Lignin and Polyacrylamide. Qinghua Feng, a,b Jinling Li, a Heli Cheng, a Fangeng Chen, c, * and Yimin Xie a, * A porous lignin-containing hydrogel was developed for dye removal via graft copolymerization of acetic acid lignin (AAL) and acrylamide (AAm), in the presence of ethyleneglycol dimethacrylate (EGDMA) as a ...

    Get Price
  • Development and Optimization of a Flocculation

    2015-10-28 · hydrocarbons. The post -hydrolysis slurry is typically 4-8% insoluble solids, predominantly consisting of lignin. Suspended solids are known to inhibit fermentation as well as poison catalysts and -liquid separation favorable for process however the material is not easily separated by filtration methods. Use of a polyacrylamide flocculant to bind

    Get Price
  • Prevention of network destruction of partially

    2019-1-16 · Maltesh, P. Somasundaran, R. Kulkarni, and S. Gundiah, “ Effect of the degree of hydrolysis of polyacrylamide on its interactions with poly (ethylene oxide) and poly (vinylpyrrolidone),” Macromolecules 24(21), 5775– 5778 (1991).

    Get Price
  • Overview of Electrophoresis | Thermo Fisher Scientific

    Polyacrylamide gel electrophoresis in progress. ... Hydrolysis of polyacrylamide at the high pH of the resolving gel, resulting in a short shelf life of 8 weeks ... The unique tank design enables side-by-side gel loading and enhanced viewing during use. Protein ladders and standards To assess the molecular masses (sizes) of proteins in a gel, a ...

    Get Price
  • Polymers for conformance improvement - PetroWiki

    2015-6-9 · Such polyacrylamide is referred to as ultra-low hydrolysis polyacrylamide. To manufacture ultra-low-hydrolysis polyacrylamide, normal acrylamide monomer feed stock is polymerized as usual, except the polymerization conditions (pH and temperature) are more tightly controlled.

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  • ENZYMATIC HYDROLYSIS OF EXTRUDED SOYBEAN MEAL

    2017-1-12 · Experiment design and statistical analysis The first step of the experiment was to determine the optimal extrusion conditions, i.e. optimal temperature of the die. In this step SC of 25% and ED of 2 PU/g were used for hydrolysis of TSBM after extrusion. At the next stage of the experiment, TSBM was

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  • SOY PROTEIN HYDROLYSATE; SOLUBILITY, THERMAL

    2016-5-18 · affecting the protein solubility and also due to flavor challenges. Enzyme hydrolysis of soy protein may lead to enhanced solubility and thermal stability. However, bitter taste caused by hydrolyzing soy protein is a limiting factor to using SPH in food applications. Therefore, controlled and limited hydrolysis of 2-8% is required to

    Get Price
  • Characterization of casein hydrolysates derived from ...

    2013-4-4 · Casein is the main proteinaceous component of milk and has made us interest due to its wide applications in the food, drug, and cosmetic industries as well as to its importance as an investigation material for elucidating essential questions regarding the protein chemistry. Enzymatic hydrolysis is an important method commonly used in the modification of protein structure in order to enhance ...

    Get Price
  • PACMANS: A bioinformatically informed algorithm to

    2017-1-12 · Introduction. Cysteine cathepsins are a group of lysosomal proteases in the papain superfamily that are involved in intracellular protein degradation as well as degradation of extracellular matrix proteins when secreted by cells. 1, 2 Of particular interest, cathepsins K, L, S, and V share 60% sequence homology and among them, include the most potent mammalian collagenase, cathepsin K, …

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  • Polyacrylamide -Wastewater Treatment Chemicals

    2020-4-1 · Technical indicators of polyacrylamide (PAM) generally include molecular weight, degree of hydrolysis, ionicity, viscosity, residual monomer content, etc. Therefore, judging quality of PAM can start from these indicators. 1.Molecular weight. Each PAM molecule is made by polymerizing more than 100,000 molecules of acrylamide or sodium acrylate.

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  • Hydrolysis of polyethyleneterephthalate by p ...

    2011-3-23 · Biocatalysts and Bioreactor Design. Hydrolysis of polyethyleneterephthalate by p-nitrobenzylesterase from Bacillus subtilis. ... The 3PET-hydrolase was isolated from non-denaturating polyacrylamide gels using fluorescein diacetate (FDA) and identified as BsEstB by LC-MS/MS analysis.

    Get Price
  • Synthesis and characterization of porous hydrogel

    2021-6-30 · Full Article. Synthesis and Characterization of Porous Hydrogel Based on Lignin and Polyacrylamide. Qinghua Feng, a,b Jinling Li, a Heli Cheng, a Fangeng Chen, c, * and Yimin Xie a, * A porous lignin-containing hydrogel was developed for dye removal via graft copolymerization of acetic acid lignin (AAL) and acrylamide (AAm), in the presence of ethyleneglycol dimethacrylate (EGDMA) as a ...

    Get Price
  • Polymers for conformance improvement - PetroWiki

    2015-6-9 · Such polyacrylamide is referred to as ultra-low hydrolysis polyacrylamide. To manufacture ultra-low-hydrolysis polyacrylamide, normal acrylamide monomer feed stock is polymerized as usual, except the polymerization conditions (pH and temperature) are more tightly controlled.

    Get Price
  • Application of polymer integration technique for

    2020-1-22 · Application of polymer integration technique for enhancing polyacrylamide (PAM) performance in high temperature and high salinity reservoirs Kingsley Godwin Uranta, Sina Rezaei Gomari*, Paul Russell, Faik Hamad School of Science, Engineering and Design…

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  • Polymer Flooding | IntechOpen

    Polyacrylamides (PAM) are widely used as water-soluble polymers producing gel in oil reservoirs to assist in oil extraction from reservoirs with high levels of heterogeneity. These gels are susceptible to degradation due to hydrolysis in harsh reservoir conditions such as elevated temperature and salinity. This study uses a polymer integration technique in attempting to optimize the ...

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  • [PDF] Application of polymer integration technique for ...

    The flocculation method had a good effect in treating copper tailings, and polyacrylamide (PAM) was commonly used as an effective flocculant. In this paper, a complete set of screening tests was established to effectively evaluate the flocculation performance of PAM used for copper tailings treatment. Firstly, the traditional jar tests were applied and the anionic PAM performed better for ...

    Get Price
  • Screening Tests of Copper Mine Tailings Flocculation

    2016-1-25 · Commercial uses of bioactive peptides require low cost, effective methods for their production. We developed a new carrier protein for high yield production of recombinant peptides in Escherichia coli very well suited for the production of toxic peptides like antimicrobial peptides. GKY20, a short antimicrobial peptide derived from the C-terminus of human thrombin, was fused to the C …

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  • Development and Optimization of a Flocculation

    2015-10-28 · hydrocarbons. The post -hydrolysis slurry is typically 4-8% insoluble solids, predominantly consisting of lignin. Suspended solids are known to inhibit fermentation as well as poison catalysts and -liquid separation favorable for process however the material is not easily separated by filtration methods. Use of a polyacrylamide flocculant to bind

    Get Price
  • Polymers for conformance improvement - PetroWiki

    2015-6-9 · Such polyacrylamide is referred to as ultra-low hydrolysis polyacrylamide. To manufacture ultra-low-hydrolysis polyacrylamide, normal acrylamide monomer feed stock is polymerized as usual, except the polymerization conditions (pH and temperature) are more tightly controlled.

    Get Price
  • Overview of Electrophoresis | Thermo Fisher Scientific

    Polyacrylamide gel electrophoresis in progress. ... Hydrolysis of polyacrylamide at the high pH of the resolving gel, resulting in a short shelf life of 8 weeks ... The unique tank design enables side-by-side gel loading and enhanced viewing during use. Protein ladders and standards To assess the molecular masses (sizes) of proteins in a gel, a ...

    Get Price
  • Application of polymer integration technique for

    2020-1-22 · Application of polymer integration technique for enhancing polyacrylamide (PAM) performance in high temperature and high salinity reservoirs Kingsley Godwin Uranta, Sina Rezaei Gomari*, Paul Russell, Faik Hamad School of Science, Engineering and Design…

    Get Price
  • Prevention of network destruction of partially

    2019-1-16 · Maltesh, P. Somasundaran, R. Kulkarni, and S. Gundiah, “ Effect of the degree of hydrolysis of polyacrylamide on its interactions with poly (ethylene oxide) and poly (vinylpyrrolidone),” Macromolecules 24(21), 5775– 5778 (1991).

    Get Price
  • SOY PROTEIN HYDROLYSATE; SOLUBILITY, THERMAL

    2016-5-18 · affecting the protein solubility and also due to flavor challenges. Enzyme hydrolysis of soy protein may lead to enhanced solubility and thermal stability. However, bitter taste caused by hydrolyzing soy protein is a limiting factor to using SPH in food applications. Therefore, controlled and limited hydrolysis of 2-8% is required to

    Get Price
  • Screening Tests of Copper Mine Tailings Flocculation

    The flocculation method had a good effect in treating copper tailings, and polyacrylamide (PAM) was commonly used as an effective flocculant. In this paper, a complete set of screening tests was established to effectively evaluate the flocculation performance of PAM used for copper tailings treatment. Firstly, the traditional jar tests were applied and the anionic PAM performed better for ...

    Get Price
  • Optimization of Enzymatic Hydrolysis of Tilapia Muscle ...

    2014-11-14 · enzymatic hydrolysis process for preparing tilapia muscle protein hydrolysates (TMPH) was performed by employing central composite design (CCD) method of response surface methodology (RSM). O-phtaldialdehyde (OPA) method was employed to calculate the degree of hydrolysis (DH), which is the key parameter for monitoring the reaction of

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  • Activity-Based Profiling of Proteases

    2020-5-29 · activity is monitoring hydrolysis of a substrate. Turnover of both natural protein substrates and substrate-based probes can provide a direct measure of protease activation events (5). The quantity of peptide fragments that are pro-duced by substrate proteolysis reflects levels of protease activity, but these substrate fragments

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  • Characterization of casein hydrolysates derived from ...

    2013-4-4 · Casein is the main proteinaceous component of milk and has made us interest due to its wide applications in the food, drug, and cosmetic industries as well as to its importance as an investigation material for elucidating essential questions regarding the protein chemistry. Enzymatic hydrolysis is an important method commonly used in the modification of protein structure in order to enhance ...

    Get Price