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2000-9-1 · The polymer-micelle model, formerly established by Cabane, is revised to develop a new viscosity equation to describe the dependence of dilute solution viscosity on polymer concentration in PEG/SDS aqueous solutions. Two parameters inthe new equation were proposed to characterize the influence of the polymer solution viscosity on the added ...
Get Price2020-9-17 · gel systems prepared with nonionic polyacrylamide (NP AM) were studied. The low initial viscosity before crosslinking and good shearing resistance of NP …
Get Price2003-3-6 · creased relative viscosity of a nonionic-polyacrylamide sample (PAM) at pH 10.8 existed even after 53 h of aging indicating such continued hydrolysis. Adsorption of PAMS on hematite at pH 11 during equilibration will be in-fluenced by the rate of hydrolysis of the -CONH2 to -COOH as well as the attendant dissociation of the -COOH to -COO- groups.
Get Price2019-7-31 · investigate the in uence of concentration of monomers on intrinsic viscosity and occulation performance of branched cationic polyacrylamide, the concentration of Cu(III) was.% of total monomers, the reaction temperature was kept constant at C, and the reaction time was kept constant at.h, while the mass concentration of total monomers was
Get PriceAnion Negative ion Nonionic. Molecular weight. Ultrate high Fairly high High Standard Medium Low Very low. Dry matter % > 90%. Viscosity(1% concentration,25ºC) 5~40 mPa·s. Toxicity. No. PH value((1% concentration,25ºC) 8~11.5. Suggested liquid concentration. 5g/l. Storage temperature. 5~35ºC
Get PricePolyacrylamide is a brittle white material manufactured by radical Polymerization of acrylamide monomer. In water, high molecular weight polyacrylamide fons viscous homogeneous solutions, their viscosity increases with increase in the polymer concentration. In some cases polyacryiamide is partially hydrolyzed to give greater viscosity.
Get Price2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity …
Get Price2016-12-1 · The viscosity relationship between 1% HCl polymer solution and 10% HCl polymer solution derived from identical polymers declined according to the following relation: PAM > AM-AMPS > HPAM > AM-DMDAAC. The changes in polymer weight indicated that high concentration hydrochloric acid results in the direct fracture of the polymer backbone.
Get PriceEffect of Nonionic Surfactant ( X-100) on the ... polymer concentration. In some cases polyacryiamide is partially hydrolyzed to give greater viscosity. Polyacrylamide molecules are very flexible and very long, with relatively small diameter, which makes the polymer susceptible to shear
Get Price1992-1-1 · Effect of viscosity and iodine concentration of nonionic radiographic contrast media on coronary arteriography in patients To assess the influence of viscosity and iodine concentration, three matched and standardized left coronary arteriograms were obtained in 20 patients using iopamidol (Isovue-370), ioversol (Optiray-320), and iohexol (Omnipaque-350).
Get Price2020-9-17 · A delayed crosslinked polymer gel was developed for in-depth water control in mature oilfields. The thermal gelation behavior of nonionic polyacrylamide (NPAM) and …
Get PriceA delayed crosslinked polymer gel was developed for indepth water control in mature oilfields. The thermal gelation behavior of nonionic polyacrylamide (NPAM) and PEI was investigated, and sodium citrate (NaCit) was selected as a new retarder to prolong the gelation time. The gelation performance of NPAM/PEI gel system can be adjusted by the variation of NPAM or PEI concentration, and a ...
Get Price2015-11-1 · A phenolic resin cross-linked nonionic polyacrylamide (NPAM) gel used for in-depth profile control was systematically analyzed. Long gelation time and strong gel strength of the gel system was obtained by adjusting NPAM or cross-linker concentration.
Get Price2019-6-1 · Viscosity –Indicator of Polymer Solution Efficiency 0 50 100 150 200 250 4 9 16 22 27 Intrinsic Viscosity of Polymer Solution Sakaguchi, K.; Nagase, K., Bull. Chem. Soc. Japan, 39, p.88 (1966) Quantity of friction as measured by the force resisting a flow in which parallel layers have at unit speed relative to one another
Get Price2018-10-2 · For gelation time and viscosity, polymer concentration affects these two responses the most. It is concluded that the optimum concentrations for the formulation is achieved at the following conditions where the value of factor (concentration of polyacrylamide) is 1.5% w/v, and factor (concentration of polyethylenimine) is 0.3% v/v. This ...
Get PriceReport 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 Price2008-2-21 · Enhancing the viscosity of a foaming cosmetic formulation has both marketing and technical reasons. A rich appearance will be correlated by end users with high concentration and value for money. Thickening also has an advantage in applying the product: a …
Get Price2017-5-26 · industrial polyacrylamide-based flocculants was investigated by determining intrinsic viscosities ... (0.01M). The viscosity of the nonionic flocculant was stable in both distilled water and in 0.01M NaCl over the time and temperatures investigated. The ... Table I-1: Kinematic viscosity of a solution of A110, concentration 120ppm, prepared in ...
Get Price2003-2-21 · ADSORPTION OF POLYACRYLAMIDE 147 FIGURE 2 Diagram illustrating changes in reduced viscosity of polyacrylamide with aging of the solutions under higher temperature conditions (60.C). ~ 4--e-a ~ 3 U) 0 u U):> 2 u i&: U ~ 1 0 oJ g 0 oJ ~ FIGURE 3 T'UE,mlft Diagram i.llu~trilting changes in reduced viscosity of polyacrylamide in alkaline solutions.
Get Price2003-3-6 · creased relative viscosity of a nonionic-polyacrylamide sample (PAM) at pH 10.8 existed even after 53 h of aging indicating such continued hydrolysis. Adsorption of PAMS on hematite at pH 11 during equilibration will be in-fluenced by the rate of hydrolysis of the -CONH2 to -COOH as well as the attendant dissociation of the -COOH to -COO- groups.
Get Price2014-6-27 · Two-stage mixing significant increase in polymer solution viscosity Polymer Mixing unit Conc. % Viscosity cP Anionic 1-stage 2-stage 0.50 226 310 Cationic 1-stage 2-stage 0.50 427 523 Nonionic 1-stage 2-stage 0.50 156 178 (27% ) (18% ) (12% )
Get PriceBecause of the relatively low sensitivity of DRI, the detectability was somewhat limited. In the other procedure, the concentration of polyacrylamide was measured by a variable-wavelength UV detector. Detectability of this procedure was found to be good, but was determined for only one nonionic polyacrylamide sample.
Get PriceHigh Concentration Polyacrylamide-Based Friction Reducer. Traditionally, friction reducer systems have been used to promote laminar flow in pipe to reduce friction pressure in pumping of low viscosity, slickwater-type fracture treatments. In these types of treatments, velocity is the key factor in proppant transport into the reservoir.
Get Price2018-10-2 · For gelation time and viscosity, polymer concentration affects these two responses the most. It is concluded that the optimum concentrations for the formulation is achieved at the following conditions where the value of factor (concentration of polyacrylamide) is 1.5% w/v, and factor (concentration of polyethylenimine) is 0.3% v/v. This ...
Get PriceNonionic polyacrylamides were unaffected. Viscosity–aging of polyacrylamide solutions was observed over a period of several months, but was insufficient to affect the flocculation activity. In the presence of 3% ethanol or methanol, no aging was observed in solutions stored for over a year.
Get PriceReport 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 PriceThis product is a trpe of ultra-high molecular polyacrylamide specifically produced for oilfield polymer flooding. process(EOR)by adopting a new technology.highest molecular weight goes uo tp 25million,moderate hydrolysis, high viscosity and fine solubility. 2.specifications
Get Price2003-2-21 · ADSORPTION OF POLYACRYLAMIDE 147 FIGURE 2 Diagram illustrating changes in reduced viscosity of polyacrylamide with aging of the solutions under higher temperature conditions (60.C). ~ 4--e-a ~ 3 U) 0 u U):> 2 u i&: U ~ 1 0 oJ g 0 oJ ~ FIGURE 3 T'UE,mlft Diagram i.llu~trilting changes in reduced viscosity of polyacrylamide in alkaline solutions.
Get PriceFabric changes in sedimentation, viscosity, and liquid limit behavior in the presence of polyacrylamide corresponding to the change in the type of particle association are observed in SEM. Floc/aggregate size and density tend to increase with increasing polyacrylamide concentration, showing the formation of more larger, denser flocs.
Get Price2017-5-26 · industrial polyacrylamide-based flocculants was investigated by determining intrinsic viscosities ... (0.01M). The viscosity of the nonionic flocculant was stable in both distilled water and in 0.01M NaCl over the time and temperatures investigated. The ... Table I-1: Kinematic viscosity of a solution of A110, concentration 120ppm, prepared in ...
Get Price2014-8-8 · Y: Polyester C , nonionic Aromatic secondary amines, , nonionic Amino acid hydrochloride 2 , cationic Analysis above showed that Lianhua S-PAM refining factory polymerized the nonionic and cationic surfac-tants, while that Haibo S-PAM polymerized the nonionic surfactants on the main chain of polyacrylamide.
Get Price2014-6-27 · Two-stage mixing significant increase in polymer solution viscosity Polymer Mixing unit Conc. % Viscosity cP Anionic 1-stage 2-stage 0.50 226 310 Cationic 1-stage 2-stage 0.50 427 523 Nonionic 1-stage 2-stage 0.50 156 178 (27% ) (18% ) (12% )
Get PricePolyacrylamide degradation and its implications in. Sep 07, 2018· High molecular weight (10 6 –3 × 10 7 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and. Cited by: 2; Iran High Effective Polyacrylamide …
Get Price2019-6-1 · Viscosity –Indicator of Polymer Solution Efficiency 0 50 100 150 200 250 4 9 16 22 27 Intrinsic Viscosity of Polymer Solution Sakaguchi, K.; Nagase, K., Bull. Chem. Soc. Japan, 39, p.88 (1966) Quantity of friction as measured by the force resisting a flow in which parallel layers have at unit speed relative to one another
Get PriceThis product is a trpe of ultra-high molecular polyacrylamide specifically produced for oilfield polymer flooding. process(EOR)by adopting a new technology.highest molecular weight goes uo tp 25million,moderate hydrolysis, high viscosity and fine solubility. 2.specifications
Get PriceThe effect of nonionic surfactants on gellan production by Sphingomonas paucimobilis was studied by the addition of 0.5, 0.75, 1.0, 1.25 and 1.5 g/l surfactants to shake flask culture. The nonionic surfactants Tween 80, Tween 40 and Triton X-100 improved gellan production by S. paucimobilis, and the …
Get PriceThe aim of this work is to develop an empirical model through the use of a design of experiments (DOE) approach for bulk viscosity of these copolymers as a function of polymer characteristics (i.e., sulfonation degree and molecular weight), oil reservoir conditions (i.e., temperature, formation brine salinity and hardness) and field operational ...
Get Price2006-4-27 · polyacrylamide gel properties using a ball indentation technique. In addition, Dr. Dennis Discher and colleagues have evaluated the comparison between mechanical stiffness values of several natural and polyacrylamide gel substrates using AFM (Engler, 2004). Compelling results were obtained displaying similarities between several substrate types.
Get Price2009-10-26 · Design of high-toughness polyacrylamide hydrogels by hydrophobic modification Suzan Abdurrahmanoglub, Volkan Cana, Oguz Okaya,* aIstanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey b Marmara University, Department of Chemistry, Kadikoy, Istanbul, Turkey article info Article history: Received 9 July 2009
Get PriceA delayed crosslinked polymer gel was developed for indepth water control in mature oilfields. The thermal gelation behavior of nonionic polyacrylamide (NPAM) and PEI was investigated, and sodium citrate (NaCit) was selected as a new retarder to prolong the gelation time. The gelation performance of NPAM/PEI gel system can be adjusted by the variation of NPAM or PEI concentration, and a ...
Get Price2018-7-11 · the solution viscosity profile at different shear rates is necessary. Shear viscosity of polyacrylamide and its degradation behavior have been studied by Abdel-Alim et al. using a high shear Couette viscometer. [7] They studied the shear degradation of polyacrylamide after exposing it to various shear stresses at different temperatures. Despite the
Get Price2016-1-2 · The properties of PAM solutions, such as contact angle, surface tension, viscosity, and flow characteristic (micromodel test), were tested at six concentrations—0, 2, 5, 10, 15, and 20 g/L—prepared by mixing PAM with deionized water, except the viscosity at 0-g/L concentration. The viscosity of deionized water is readily available in ...
Get PriceReport 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 Price2007-1-29 · The concentration of chemical additives including the friction reducer remains at about the same concentrations in these fluids, but the cumulative volume pumped now is much larger. The large volumes of friction reducers now pumped have become an industry concern due to possible fracture and formation damage caused by the polymer.
Get PriceThe rheological behavior of polyacrylamide solution II. The rheological behavior of the polyacrylamide solution were studied over the 20–50 ppm range and the temperature range of 20–50°C. Fig. 1, Fig. 2 show the experimental results of the shear stress (τ) and shear rate (γ ̇) and indicate the non-Newtonian behavior of these solutions.
Get PriceSynergism of water-soluble hydrophobically associating polyacrylamide (HA-PAM) with nonionic surfactant laurel alkanolamide (LAA) was investigated via the rheology, fluorescence spectroscopy and dissipative particle dynamics (DPD) simulation methods. The viscosity and elasticity of HA-PAM solutions increased in a large LAA concentration range, which was principally ascribed to the crosslinking ...
Get Price2021-6-1 · Next-Generation Tint Viscosity Stabilizer. To address these limitations, our next-generation tint viscosity stabilizer features an enhanced molecular structure based on HEUR chemistry, but retaining a high degree of hydrophobic sites like those available in the first-generation HEAT polymers (Figure 4).
Get PriceA delayed crosslinked polymer gel was developed for indepth water control in mature oilfields. The thermal gelation behavior of nonionic polyacrylamide (NPAM) and PEI was investigated, and sodium citrate (NaCit) was selected as a new retarder to prolong the gelation time. The gelation performance of NPAM/PEI gel system can be adjusted by the variation of NPAM or PEI concentration, and a ...
Get Price2009-10-26 · Design of high-toughness polyacrylamide hydrogels by hydrophobic modification Suzan Abdurrahmanoglub, Volkan Cana, Oguz Okaya,* aIstanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey b Marmara University, Department of Chemistry, Kadikoy, Istanbul, Turkey article info Article history: Received 9 July 2009
Get Price2017-9-26 · concentration of polymer, but in no case should the concentration be reduced to below 0.25% or poor dissolution may result. If mixing is still inadequate, add larger impellers (or more impellers) to the mixing shaft and increase the horsepower of the mixer, if necessary. DATA SHEET Municipal and Industrial POLYPRO ANIONIC AND NONIONIC POLYMERS
Get PriceSand Prevention and Solidification: The nonionic-polyacrylamide is dissolved into 0.3% concentration, cross-linking agent is added, and the product can be sprayed on desert to prevent and solidify sand. Soil humectant: It can preserve water and solidify sand for soil and can play a role of humectant on slope grass planting, tree planting, and ...
Get Price2015-10-26 · viscosity. Reproducibility is within -10%. Table 2 The values are fully consistent with the proposed formulations. The lower osmolality and viscosity, together with similar effectiveness in terms of relaxivity per mole of agent could be used to formulate the nonionic agents with more flexibility.
Get PriceThe rheological behavior of polyacrylamide solution II. The rheological behavior of the polyacrylamide solution were studied over the 20–50 ppm range and the temperature range of 20–50°C. Fig. 1, Fig. 2 show the experimental results of the shear stress (τ) and shear rate (γ ̇) and indicate the non-Newtonian behavior of these solutions.
Get PriceThe aim of this study was determination of lauramide as a nonionic surfactant in liquid detergent using multivariate calibration. A Partial Least Squares (PLS) algorithm is used to perform the calibration. The concentration of lauramide for experimental calibration matrix was varied between 0.005-0.020 g mL-1. Absorbance data of the calibration ...
Get PriceThe Effect of the Flocculants PAM and PAC in the Treatment of The Domestic Sewage. 2014-11-23 09:00:05. In the treatment of the domestic sewage, there are two types of the water flocculants: the PAM ( Polyacrylamide) and the PAC (Polyaluminium Chloride). The domestic sewage is the waste water which is directly discharged by the residents in the ...
Get Price1998-11-20 · Critical micelle concentration, partition coefficient, and dynamic liquid viscosity at a surfactant concentration of 10 kg mâ 3 for the six nonionic surfactants used. SCMC (kg mâ 3) 0.0547 0.0285 0.1416 0.2609 0.1246 0.0555 K (10â 4) 5.57 3.87 4.23 2.48 4.76 8.42 (10â 4 kg mâ 1 sâ 1) 8.72 10.02 8.77 11.40 8.76 9.08 Surfactant Igepal CA ...
Get Price2015-12-9 · The precursor exhibited Newtonian behavior at 15 and 25 °C, with the zero shear viscosity of 0.07 Pa ⋅ s and 0.09 Pa ⋅ s respectively, implying that the precursor mostly consisted of ...
Get Price2014-11-26 · Polyacrylamide (PAM) is a water soluble polymer and is widely used in several oilfield applications such as vis-cosity enhancer, drilling fluid design and in EOR applica-tion due to its favorable rheology, compatibility with other chemicals and cost-effectiveness (Thomas et al., 2012). The PAM together with surfactant molecules can attach at
Get Price2020-7-13 · Oilfield Additive High Viscosity Chemicals Anionic Polyacrylamide apam . 1. Product characteristics. The Anionic Polyacrylamide is of White or yellow powder, non-toxic, non-corrosive, easily soluble in water, mainly used as a selective flocculant for …
Get Price2011-9-9 · of nonionic polyacrylamide flocculant and perhaps by contaminants with surfactant properties, which ... concentration (40 to 50 wt% solids). The results indicated that the apparent dynamic surface tension of ... because increased viscosity is known to increase …
Get Price2006-4-27 · polyacrylamide gel properties using a ball indentation technique. In addition, Dr. Dennis Discher and colleagues have evaluated the comparison between mechanical stiffness values of several natural and polyacrylamide gel substrates using AFM (Engler, 2004). Compelling results were obtained displaying similarities between several substrate types.
Get Price2020-2-7 · The main component is anionic modified polyacrylamide, with molecular weight between 6 million and 10 million, and the degree of hydrolysis is 25% to 40%. Production unit: Dongying noer Chemical Co., Ltd. (2) TF281: fluorocarbon nonionic surfactant, yellowish to reddish brown liquid, with an effective content of more than 30%.
Get Price2021-6-1 · Next-Generation Tint Viscosity Stabilizer. To address these limitations, our next-generation tint viscosity stabilizer features an enhanced molecular structure based on HEUR chemistry, but retaining a high degree of hydrophobic sites like those available in the first-generation HEAT polymers (Figure 4).
Get Price2021-6-20 · Full Article. Synthesis and Application of a Cationic Polyacrylamide Dry Strength Agent with Anionic Content. Guangyan Wang and Yi Jing* A new net-cationic polyacrylamide dry strength agent was synthesized through free radical polymerization using acrylamide (AM), itaconic acid (IA), N,N-dimethylacrylamide (F), and sodium methallyl sulfonate (T).
Get Pricepolyacrylamide polymer manufacturer/supplier, China polyacrylamide polymer manufacturer & factory list, find qualified Chinese polyacrylamide polymer manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com.
Get Price1991-10-8 · Higher xanthan concentration raised the absolute solution viscosity and increased the degree of shear thinning. Addition of remedial amendments (e.g., phosphate, sodium lactate, ethyl lactate) caused the more » dynamic viscosity of xanthan gum to decrease, but the solutions maintained shear-thinning properties.
Get Price2018-2-21 · Polyacrylamide, with the remainder being water content. Aque-ous solutions are self-explanatory. Inverse emulsions (aka dis-persions) contain Polyacrylamide in water droplets coated with surfactant molecules and suspended in mineral oil. Regardless of form, the Polyacrylamide is nonionic. The molecular weight of Polyacrylamide is controllable; ex-
Get Price2019-12-2 · i.e. the viscosity of a 2% solution in water, that depends on the molecular weight of the cellulose ether. In this paper several rheological characterizations will be discussed, varying parameters like the cellulose ether viscosity and its modification with starch ether and polyacrylamide through a simple experimental design.
Get Price2015-2-9 · Prepare different concentration thickener, test the viscosity in 50˚C water bath, 170 s−1 shear rate. When the concentration of hydrophobic association thickener is not more than 1.7 g/L, viscosity rise gently, viscosity increasing quantity is limited. When the hydrophobic association solution concentration is …
Get Price2016-1-20 · concentration and liquor viscosity, the oil displacement ef-ficiency was better. However, at the same flow rate, the flow concentration was greater, the probability of blocking the hole with the polymer particle was greater, and the rise in pressure drop was quicker.6 At present, our oil field production has already injected HPAM-water solution to
Get PriceDesign 1 4 x higher content of inverting surfactant * to expedite polymer activation Primary Mixing Process Design 2 Process Especially Important for Clarifier at WTP * AWWA Standard for Polyacrylamide (ANSI-AWWA B453-06), 11, 2006 To enable “inverting surfactant” to work properly, make polymer solution at high concentration 21 22
Get PriceDesign of Block Copolymer Costabilized Nonionic Microemulsions and Their In Vitro and In Vivo Assessment as Carriers for Sustained Regional Delivery of Ibuprofen via Topical Administration. ... w/w) were used to develop oil-in-water microemulsions with Newtonian flow behavior, low viscosity (from 368 ± 38 to 916 ± 46 mPa s), and average ...
Get PriceThe nonionic and anionic polymers have different properties. At lower levels in water, the anionic polymers build properties, such as viscosity, faster. Anionic polyacrylamide polymers are compatible with other charged molecules, such as are contained in fertilizers. However, they can react undesirably with certain other charged molecules.
Get Price2021-6-15 · polymer is nonionic polyacrylamide, the homopolymer formed from acrylamide monomer. More complex polymers may have varying patterns of copolymerization or cross-linked structures. Acrylamide monomer is used to make anionic and cationic copolymers, as well as nonionic polyacrylamide. Get Price
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