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2013-12-24 · The best condition for the intrinsic viscosity of P(AM-DAC-BA) in theory was that photoinitiator concentration was 0.60‰, incident light intensity 1491.67 μw/cm2, and illumination time 117.89 min, respectively. The predicted results were calculated by …
Get PriceThe 4000 ppm concentration was taken as the reference concentration in Eq. 2 to compute the dimensionless concentration plotted in Fig. 5 and 6. As 4000 ppm solutions were prepared as stock solutions for all polymers used in this study, it was more practical to consider this concentration as a reference concentration to quantify the effect of concentration on the viscosity of polymer solution.
Get Price2020-1-14 · viscosity of the cationic polyacrylamide emulsion decreased, while the apparent viscosity of the crude product increased when the PAETAC concentration …
Get Pricemonomers concentration 8~15%, PEG 20000 concentration 15~25%, and PDMC concentration 0.5~1.5%. Finally, the for-mation process of copolymer particles was investigated by optical microscope. Keywords: polymer synthesis, aqueous two-phase polymerization, cationic polyacrylamide, dimethylaminoethyl methacry-late methyl chloride, polyethylene glycol 20000
Get Price2021-6-28 · The viscosity of polyacrylamide solution mainly reflects the internal frictional resistance between liquid molecules due to flow or relative movement. The internal frictional resistance is related to the structure of the polymer, the nature of the solvent, the concentration of the solution, temperature, pressure and other factors.
Get PriceBlufloc Polyacrylamide (PAM) Polyelectrolyte is water soluble polymer with Anionic, Cationic and Nonionic types. The range of molecular weight is different, Anionic is from 5-22 million, Cationic is from 5-12 million and Nonionic is from 5-12 million, with a charge density ranging from 0-60%.
Get PriceCationic polyacrylamides modified with fluorinated methacrylate (FPAM) were prepared with acrylamide, dodecafluoroheptyl methacrylate (DFM) and methacryloxyethyl trimethylammonium chloride by free radical micellar copolymerization. The solution properties of FPAM were investigated. The results show that there are strong hydrophobic associations in the FPAM aqueous solution.
Get Price1999-3-1 · The extrapolated zero shear rate specific viscosity values for each concentration of the individual polymers were used to evaluate the intrinsic viscosities by the procedure developed by Huggins, (2) η sp /C=(η)[1+k H (η)C] where η sp is the shear corrected specific viscosity, k H is the Huggins constant and C is the polymer concentration in g dl −1.
Get Price2012-7-22 · Polyacrylamide Emulsions Handbook 2-2 Storage and handling of emulsions : basic principles Emulsions must be stored inside a building at a constant temperature between 5°C and 30°C. During the storage and handling, the emulsion must not be contaminated by water. Emulsions must not be in a situation where the surface can dry by ventilation.
Get PriceBlufloc Polyacrylamide (PAM) Polyelectrolyte is water soluble polymer with Anionic, Cationic and Nonionic types. The range of molecular weight is different, Anionic is from 5-22 million, Cationic is from 5-12 million and Nonionic is from 5-12 million, with a charge density ranging from 0-60%.
Get Price2021-6-28 · The viscosity of polyacrylamide solution mainly reflects the internal frictional resistance between liquid molecules due to flow or relative movement. The internal frictional resistance is related to the structure of the polymer, the nature of the solvent, the concentration of the solution, temperature, pressure and other factors.
Get Pricemonomers concentration 8~15%, PEG 20000 concentration 15~25%, and PDMC concentration 0.5~1.5%. Finally, the for-mation process of copolymer particles was investigated by optical microscope. Keywords: polymer synthesis, aqueous two-phase polymerization, cationic polyacrylamide, dimethylaminoethyl methacry-late methyl chloride, polyethylene ...
Get Price2013-12-24 · The best synthetic conditions that were optimized by fitting RSM model while setting the photoinitiator concentration from 0.025 to 0.075 wt%, incident light intensity from 700.0 to 1700.0 μw·cm 2, and illumination time from 40 to 120 min were given that the cationic degree, photoinitiator concentration, light intensity, and illumination time ...
Get PriceCationic polyacrylamides modified with fluorinated methacrylate (FPAM) were prepared with acrylamide, dodecafluoroheptyl methacrylate (DFM) and methacryloxyethyl trimethylammonium chloride by free radical micellar copolymerization. The solution properties of FPAM were investigated. The results show that there are strong hydrophobic associations in the FPAM aqueous solution.
Get Price2009-1-30 · Effect of photo-initiators concentration on the intrinsic viscosity. Polymerization conditions: terpolymer concentration 0.05 wt.%, pH = 3.0, initial temperature 6°C, monomers concentration 36 wt.%, cationic degree 12%, photo time 120 min
Get Price2017-9-26 · not appear to be stirring due to high viscosity, try a lower concentration of polymer, but in no case should the concentration be reduced to below 0.25% or poor dissolutionmay result. If mixing remains inadequate, add larger impellers (or more impellers) to the mixing shaft and increase the horsepower of the mixer, if necessary.
Get Price2019-12-12 · The interaction between cellulose fibers in the presence of cationic polyacrylamide (CPAM) was analyzed by rheology as a function of polyelectrolyte concentration, charge density, and molecular weight. CPAM was found to strongly influence the yield stress of cellulose suspensions; low doses of CPAM increased the yield stress, but at higher concentrations the yield stress declined. The charge ...
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 · Zhang et al. , synthesized the polymer thickening agent DXGY-1, which is a cationic polyacrylamide. Its viscosity retention ratio in 12% HCl + 3% HF reached 82%. Liu et al. , synthesized a copolymer from AM, DMDAAC, and AMPS monomers and a cationic monomer X. As an acid thickening agent, the viscosity retention ratio of the copolymer in 20 wt ...
Get PriceCationic Polyacrylamide (CPAM) 69418-26-4,Powerful foculant widely used in industrial and municipal water treatment_OKCHEM Please note that all emails sent by OKCHEM are from ***@okchem.com, [email protected] okchemvip.com, or [email protected]
Get PriceAbstract: In order to improve the aqueous solutions viscosity and flocculation performance of cationic polyacrylamide, organic montmorillonite was added into polymerization system of polyacrylamide, the cationic polyacrylamide/dimethyl diallyl ammonium chloride/organic montmorillonite (CPAM/DMDAAC/MMT) nanocomposite was prepared by aqueous two-phase polymerization method.
Get Price2009-1-30 · Effect of photo-initiators concentration on the intrinsic viscosity. Polymerization conditions: terpolymer concentration 0.05 wt.%, pH = 3.0, initial temperature 6°C, monomers concentration 36 wt.%, cationic degree 12%, photo time 120 min
Get Price2003-3-10 · 20 X. ¥u and P. Somasundaran{Col/oids Surfaces A: Physicochem. Eng. Aspects 81 (1993) 17-11 on alumina are shown in Fig. 5. It can be seen that cationic polyacrylamide, when used alone, does not adsorb on the alumina surface due to electro-
Get Price2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …
Get Price2017-8-27 · and concentration of stabilizers on the stability of anionic polyacrylamide dispersions were investigated by measurements of the apparent viscosity and the stability of the anionic polyacrylamide dispersions and micromorphology observations. 2 Experimental 2.1 Materials Reagents used were: Acrylamide (AM) and ammonium
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 Price2019-12-12 · The interaction between cellulose fibers in the presence of cationic polyacrylamide (CPAM) was analyzed by rheology as a function of polyelectrolyte concentration, charge density, and molecular weight. CPAM was found to strongly influence the yield stress of cellulose suspensions; low doses of CPAM increased the yield stress, but at higher concentrations the yield stress declined. The charge ...
Get PriceDr. Bruce Perrault, Ph.D , (Georgia Institute of Technology (Georgia Tech), USA) Fluorocompounds areone of the important parts of our daily life, concerning alimentation, health care or leisure time as well as the alternative energy sector, which is of an increasing significance in times of …
Get Price2009-8-1 · The influence of polyacrylamide on kaolin fabric, particle association type, and number of associations that develop depends on the molecular mass, concentration, and ion type of the polymer as function of the solids content of the system. This study of polymer–clay combination offers a new outlook for purpose of creating engineered soil systems.
Get Price2003-2-20 · the viscosity, which is expected to be small but significant for high-molecular-weight polymers such as those used in this work. In distilled water, the Mark-Houwink viscosity parameters for polyacrylamide are K - 6.31 X 103 dl/g and a = 0.8 at 30°C.27 Similar parameters are not available for the acrylamide co-polymers.
Get PriceCationic Polyacrylamide (CPAM) 69418-26-4,Powerful foculant widely used in industrial and municipal water treatment_OKCHEM Please note that all emails sent by OKCHEM are from ***@okchem.com, [email protected] okchemvip.com, or [email protected]
Get Price2018-2-22 · The results indicate that within a wide concentration range, the viscosity curves for these cationic microgels perfectly correspond to the Krieger–Dougherty model as modified by Tan et al. In particular, the specific volume in this model decreases at the critical overlapping concentration and reveals the interaction intensity between ...
Get PriceUV-Initiated polymerization of cationic polyacrylamide: synthesis, characterization, and sludge dewatering performance ... and photoinitiator concentration on the intrinsic viscosity [η] of P(AM-DAC-BA) were investigated. RSM model based on the influencing data was established for optimizing synthetic conditions. It was found that, at light ...
Get Price2021-6-16 · Cationic Polyacrylamide. Appearance. White Fine-Sand. Shaped Powder. Milky White. Emulsion. Molecular Weight. 6million-10million lonicity. 5-80. 5-55 Viscosity 4.5-7. Degree of Hydrolysis% Solid Content% ≥90. 35-40. Shelf Life. 12 Months. 6 Months. Note: Our product can be made upon your special request.
Get PriceDr. Bruce Perrault, Ph.D , (Georgia Institute of Technology (Georgia Tech), USA) Fluorocompounds areone of the important parts of our daily life, concerning alimentation, health care or leisure time as well as the alternative energy sector, which is of an increasing significance in times of …
Get Price2020-7-11 · COMMERCIAL Polyacrylamides Major manufacturers of acrylamide polymers are BASF, SNF Floerger, Shangdong Tongli , and Kemira. Applications. Poly(acrylamide-co-acrylic acid) and its sodium salts (APAM) are widely used as thickening agent, binder, super absorbent, soil conditioner, filtering aid, flocculating agent, crosslinker, suspending agent, lubricant, and oil recovery agent.
Get Price2018-6-10 · The particle size of the synthesized amphoteric polyacrylamide (AmPAM) ranged from 1 to 8μm and the intrinsic viscosity ranged from 5.6 to 14.2dL/g. The influences of aqueous solution of AS concentration, stabi-lizer concentration, initiator concentration, monomer concentration on the conversion of monomer, the intrinsic viscosity,
Get PriceThrough two‐phase aqueous polymerization, amphoteric polyacrylamide (AmPAM) emulsion, as an environmental friendly flocculant for the tannery wastewater, was firstly synthesized using ammonium sulfate aqueous solution as the dispersion, using acrylamide, cationic monomer ethylene methyl propenoyl‐trimethylammonium chloride (DMC), and anionic monomer acrylic acid (AA).
Get Price2010-9-30 · The viscosity at high temperature has been studied as a function of aging time, shear rate, sulfonation degree, molecular weight, and concentration of IBA. The retention in porous medium for sulfonated polyacrylamide polymers was measured in core floods using outcrop Berea sandstone.
Get PriceUV-Initiated polymerization of cationic polyacrylamide: synthesis, characterization, and sludge dewatering performance ... and photoinitiator concentration on the intrinsic viscosity [η] of P(AM-DAC-BA) were investigated. RSM model based on the influencing data was established for optimizing synthetic conditions. It was found that, at light ...
Get Price2012-7-22 · Polyacrylamide Emulsions Handbook 2-2 Storage and handling of emulsions : basic principles Emulsions must be stored inside a building at a constant temperature between 5°C and 30°C. During the storage and handling, the emulsion must not be contaminated by water.
Get Price2018-11-29 · various parameters on intrinsic viscosity, conversion, and dissolvability. Results showed that the best performance was obtained at indices of 0.45 wt‰ redox initiator concentration, 0.2 wt‰ azo initiator concentration, 40.0 wt% cationic monomer, 3 wt‰ urea, and first- and second-stage light intensities of 8.5 and 13 mW/cm2, respectively ...
Get PricePaper industry in polyacrylamide dispersing agent is composed of cationic polyacrylamide with low relative molecular weight, due to its molecular chain containing carboxyl and on electronegative fiber with dispersion effect, can improve the viscosity of pulp, is conducive to the fiber suspension and effectively improve the sheet uniformity is a long fiber of high efficient dispersant.
Get Price2019-10-25 · Polyacrylamide is easy to dissolve in cold water. The viscosity and concentration of its aqueous solution are similar to the logarithmic relationship (i.e. linear relationship). Polyacrylamide with high molecular weight and ultra-high molecular weight (more than 20 million) has a high viscosity.
Get Price2021-6-16 · Cationic Polyacrylamide. Appearance. White Fine-Sand. Shaped Powder. Milky White. Emulsion. Molecular Weight. 6million-10million lonicity. 5-80. 5-55 Viscosity 4.5-7. Degree of Hydrolysis% Solid Content% ≥90. 35-40. Shelf Life. 12 Months. 6 Months. Note: Our product can be made upon your special request.
Get Price2017-4-27 · Viscosity average molecular weight of polyacrylamide The viscosity average molecular weight of polyacrylamides was carried out by determining the intrinsic viscosities of the polyacrylamides using Ubbelohede viscometer, no. 4809 ASTM at 25 ± 0.1ºC. The polyacrylamide solutions were prepared in distilled water.
Get Pricewith increasing polyacrylamide concentration, showing the formation of more larger, denser flocs. Final sediment height tends to decrease with an increase in polyacrylamide concentration, indicating denser particle associations (face-to-face) and verified with scanning electron microscopy.
Get Price2021-7-15 · 3. The concentration of cationic polyacrylamide is generally 2 ‰ to 5 ‰. The concentration of anionic and nonionic polyacrylamide is generally 1 ‰ to 2 ‰. Generally, the dissolution time of cations and anions is about one hour, and that of non-ionic is about one and a half hours. 4.
Get Price1992-5-5 · The intrinsic viscosity behavior for cationic polyelectrolyte resulting from the electrostatic repulsive force of the polymer chain is contrasted with polyampholyte. The polyelectrolyte in the presence of KCl has a lower degree of binding, indicating that the proton ion (H + ) is relatively difficult to bind to the CH 3 SO 4 − at the polymer end.
Get Price2021-4-7 · The viscosity of polyacrylamide solution mainly reflects the internal frictional resistance between liquid molecules due to flow or relative movement. The internal friction resistance is related to the structure of the polymer, the nature of the solvent, the concentration of the solution, temperature and pressure and other factors.
Get PriceThe best synthetic conditions that were optimized by fitting RSM model while setting the photoinitiator concentration from 0.025 to 0.075 wt%, incident light intensity from 700.0 to 1700.0 μw·cm 2, and illumination time from 40 to 120 min were given that the cationic degree, photoinitiator concentration, light intensity, and illumination time ...
Get Price2012-7-22 · Polyacrylamide Emulsions Handbook 2-2 Storage and handling of emulsions : basic principles Emulsions must be stored inside a building at a constant temperature between 5°C and 30°C. During the storage and handling, the emulsion must not be contaminated by water.
Get PriceCationic Polyacrylamide, short name is CPAM, also called Cationic Polyelectrolyte, is copolymer of acrylamide and quaternized cationic monomer with different range of molecular weight from 5-12 million, and a charge density ranging from 10-50%. Our C-9030 …
Get PriceA Process for Making a Cationic Polyacrylamide Containing Quaternized Dimethylaminoethyl Methacrylate . . . . . A Process for Making a Cationic Copolymer of Aciyiamide and
Get PriceSlaughterhouse Wastewater Treatment Flocculant High Molecular Weight Cationic Polyacrylamide . Product Description. This is a high molecular weight cationic polyacrylamide flocculant. It is easy to be dissolved in water, high viscosity, suggested keeping the solution for 1day. In Slaughterhouse wastewater, it works well for separation and ...
Get Price2020-12-30 · As the molecular weight increases, the viscosity of the polymer solution increases. Typically, the 'zero shear' viscosity varies with the molecular weight (M) and concentration (c) as follows; η (0) ~ c2.5 M3.4 (2) Viscosity measurement using Stokes Law: (See addendum on the Falling Ball Viscometer) A solid sphere (of radius R and density ρ S
Get PriceGenerally, the higher the molecular weight, the higher the concentration necessary. Copolymers also generally require a higher concentration than homopolymers to obtain a similar reduction in viscosity. Copolymers of cationic monomer and non-ionic monomer (preferably less than 50 mole percent non-ionic component) may also be used.
Get Price3 1 determination using cationic dyes (Chmilenko et al., 2004) were previously used for detection of 2 polyacrylamide in surface water, wastewater, soil water and oilfield brines.
Get Price2017-9-26 · not appear to be stirring due to high viscosity, try a lower concentration of polymer, but in no case should the concentration be reduced to below 0.25% or poor dissolutionmay result. If mixing remains inadequate, add larger impellers (or more impellers) to the mixing shaft and increase the horsepower of the mixer, if necessary.
Get Price2019-9-4 · 3 of 20 101 viscosity, and dissolving time; (4) to evaluate NP sludge dewatering performance and mechanism by 102 investigating dosage dependence, sedimentation behavior, and floc distribution. 103 2. Materials and Methods 104 2.1 Materials 105 The monomer AM (98.5%, w/w) was obtained from Lanjie Tap Water Co., Ltd (Chongqing, 106 China). The cationic monomer DAC(80% in water) was …
Get Price2014-5-1 · Cationic Polyacrylamide P(AM-DAC-BA) was synthesized by UV initiation, with acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC), butyl acrylate (BA) as the monomers. P(AM-DAC-BA). UV spectroscopy and infrared spectroscopy were employed to …
Get Price2018-6-17 · Low concentration (1–6 mol%) of cationic monomer from each group were copolymerized with acrylamide to obtain hydrophobically modified cationic polyacrylamide. Results show that the intrinsic viscosity and molecular weight of the copolymers decreases with the concentration of the hydrophobic cationic group, whereas charge density indicates ...
Get Price2009-11-24 · [0010] In a preferred embodiment hydrogen peroxide is added at a concentration of about 0.004%, to a well treating fluid containing fresh water and about 0.01% polyacrylamide. For ease of handling the hydrogen peroxide is preferably added as a 7% solution and the polyacrylamide is added as about a 32% emulsion.
Get PriceGenerally, the higher the molecular weight, the higher the concentration necessary. Copolymers also generally require a higher concentration than homopolymers to obtain a similar reduction in viscosity. Copolymers of cationic monomer and non-ionic monomer (preferably less than 50 mole percent non-ionic component) may also be used.
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Get Price2021-4-7 · The viscosity of polyacrylamide solution mainly reflects the internal frictional resistance between liquid molecules due to flow or relative movement. The internal friction resistance is related to the structure of the polymer, the nature of the solvent, the concentration of the solution, temperature and pressure and other factors.
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