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2003-5-6 · An inverse emulsion of cationic starch‐graft‐polyacrylamide was prepared by inverse emulsion polymerization and a subsequent Mannich reaction. The copolymerization was carried out using potassium persulfate as initiator. The reaction conditions and factors affecting emulsion stability were studied. Experiments showed that a high solids ...
Get Price2015-5-25 · The optimum doses of the cationic starch flocculants were two to four times higher than the cationic polyacrylamide polymers. Additionally, it was found that the cationic starches were more effective in minimising the turbidity of the natural organic soils than the cationic polyacrylamides.
Get Price2019-4-1 · As shown in Fig. 2, a slightly anionic charge density between 2.4 and 0.4 mEq/g (corresponding to approximately 18% to 3% of the negatively charged monomers) in the case of PAM and around 1.9 mEq/g in the case of starch were established as optimal. In comparison, when a low cationic polymer was used rather than a low anionic polymer, the ...
Get Price“AmPAM & cationic starch,” BioResources 13(4), 7864-7872. 7864 Application of Amphoteric Polyacrylamide Solely or with the Combination of Cationic Starch for Paper Strength Improvement Peipei a,Wang,a Yangyang Zhu, b Xiaoyan Wang,a Xinyu Zhang,a Wenyuan Zhu,a Chunli c …
Get Price2006-3-18 · Graft copolymers of polyacrylamide and various substrates were prepared by reactive extrusion in a twin screw extruder using ammonium persulfate as initiator. Substrates included unmodified starches (corn, waxy maize, wheat, and potato), cationic starches, dextrin, dextran, and polyvinyl alcohol (PVOH). The feed ratio of substrate to monomer was 2:1. Average conversion of monomer to polymer ...
Get Price2017-11-1 · A starch–PAM system reduces PAM usage for conventional and ballasted flocculation. With 0.4 mg starch/L, PAM is reduced by 69% (surface water) and 45% (wastewater). With the dual system (G: 165-200 s −1 ), floc resistance is not impacted. Coaddition of a starch-PAM blend solution could be used to reduce the use of PAM.
Get Price2021-6-8 · Full Article. Application of Amphoteric Polyacrylamide Solely or with the Combination of Cationic Starch for Paper Strength Improvement. Peipei Wang, a Yangyang Zhu, a,b Xiaoyan Wang, a Xinyu Zhang, a Wenyuan Zhu, a Chunli Yao, c and Junlong Song a, * Water-soluble amphoteric polyacrylamide (AmPAM) has been widely used in papermaking as one of the agents for the …
Get Price2012-12-24 · modifications based on synthetic polymers (e.g., polyacrylamide) [8,9] and natural polymers (e.g. starch, cellulose, chitin, lignose), respectively. We once prepared a cationic polymer by reaction of 2,3-epoxypropyltrimethylammonium chloride and starch via a dry process and studied its application as a profile control agent in en-
Get PriceCross-linked potato starch (StMBA) and starch-g-polyacrylamide materials with a high content of natural polymer from 60 to 90 wt.% (St60–St90) were synthesized by double chemical-chemical modification (grafting and cross-linking). Eco-friendly starch absorbents were tested for removal of Cu2+ and Fe3+ from aqueous solutions. The characteristics of the obtained materials (Fourier transform ...
Get Price2008-5-19 · They are commonly added in the form of colloidal particles, stabilized by cationic starch. As an example we studied the deposition of micron-sized Alkyl Ketene Dimer (AKD) particles on pulp fibres by cationic polyacrylamide (cPAM), a common flocculent. It was found that cPAM did not adsorb on AKD particles stabilized by cationic starch.
Get PriceA cationic polyacrylamide-grafted starch (St-g-CPAM) flocculant for the coal slurry wastewater, was prepared by using corn starch and acrylamide (AM) as monomers, ethylene methyl propenoyl trimethylammonium chloride (DMC) as cationic monomer through solution polymerization. The effects of initiator concentration, reaction temperature, and monomer concentration on percentage of grafting …
Get PriceA series of Cationic-Starch-graft-Polyacrylamide (CP) copolymers have been synthesized in salt solution system under microwave radiation and modified by Nano magnetic Fe3O4 (NMCP). The two products were prepared as flocculants for coking wastewater treatment. The impact of CP dosage, NMCP dosage, PFS dosage, CTAB dosage and pH on flocculating effects was investigated.
Get PriceDewatering performance of five cationic starch-based polymers with charge densities ranging from 0.38 to 0.94 meq/g and molecular weights ranging from 5 × 104 g/mol to 5 × 105 g/mol were compared with five cationic acrylamide-based polymers with charge densities that ranged from 1 to 3.05 meq/g and molecular weights that ranged from 10 × 106 ...
Get Price2015-5-25 · The optimum doses of the cationic starch flocculants were two to four times higher than the cationic polyacrylamide polymers. Additionally, it was found that the cationic starches were more effective in minimising the turbidity of the natural organic soils than the cationic polyacrylamides.
Get PriceAnionic /Cationic Emulsion Polyacrylamide Youju chemical. Anionic /cationic emulsion polyacrylamide is one kind of high efficiency liquid flocculants with high concentration ,polymerized in the oil by using water-in-oil emulsion advanced technology and W/O emulsifer, with high conversion rate ,high molecular weight,high stability ,multi-function, instant etc.
Get PriceCross-linked potato starch (StMBA) and starch-g-polyacrylamide materials with a high content of natural polymer from 60 to 90 wt.% (St60–St90) were synthesized by double chemical-chemical modification (grafting and cross-linking). Eco-friendly starch absorbents were tested for removal of Cu2+ and Fe3+ from aqueous solutions. The characteristics of the obtained materials (Fourier transform ...
Get PriceSaponified dextrin Waxy maize starch 380 (5) 1.16 (0.03) graft copolymers, however, were essentially soluble in DI Potato starch 557 (14) 1.64 (0.06) water; the small fraction which remained on the sieve gave Wheat starch 388 (8) 1.52 (0.05) Cationic normal corn starch 390 (21) 1.47 (0.03) an absorbency of 6 g/g. Cationic waxy maize starch 277 ...
Get PriceThe present invention discloses a process for manufacturing a grafted polyacrylamide flocculant of cationic/ampholytic ions, which is characterized by graft-copolymerizing starch or micro-crystalline cellulose as backbone with acrylamide, while using potassium permanganate as initiator, hydrolyzing and thereafter reacting with alkyl-amino-carbinol.
Get Price2012-2-15 · Starch is one of the most abundant natural polymers in the world, and as an important derivative of starch, cationic polyacrylamide-grafted starch (St-g-CPAM) has been widely used in many fields such as paper making, spinning, petroleum well drilling, medicine
Get PriceA series of Cationic-Starch-graft-Polyacrylamide (CP) copolymers have been synthesized in salt solution system under microwave radiation and modified by Nano magnetic Fe3O4 (NMCP). The two products were prepared as flocculants for coking wastewater treatment. The impact of CP dosage, NMCP dosage, PFS dosage, CTAB dosage and pH on flocculating effects was investigated.
Get Pricefor the starch substrates were approximately 25% with grafting efficiencies of about 70%. Polyacrylamide graft molecular weights ranged from 317,000 to 769,000. Absorbencies at pH 7 for saponified graft copolymers prepared with unmodified starches were approximately 200 g/g and approximately 150 g/g for the cationic star-ches, dextran, and PVOH.
Get Price2015-5-25 · The optimum doses of the cationic starch flocculants were two to four times higher than the cationic polyacrylamide polymers. Additionally, it was found that the cationic starches were more effective in minimising the turbidity of the natural organic soils than the cationic polyacrylamides.
Get PriceDewatering performance of five cationic starch-based polymers with charge densities ranging from 0.38 to 0.94 meq/g and molecular weights ranging from 5 × 104 g/mol to 5 × 105 g/mol were compared with five cationic acrylamide-based polymers with charge densities that ranged from 1 to 3.05 meq/g and molecular weights that ranged from 10 × 106 ...
Get PriceCross-linked potato starch (StMBA) and starch-g-polyacrylamide materials with a high content of natural polymer from 60 to 90 wt.% (St60–St90) were synthesized by double chemical-chemical modification (grafting and cross-linking). Eco-friendly starch absorbents were tested for removal of Cu2+ and Fe3+ from aqueous solutions. The characteristics of the obtained materials (Fourier transform ...
Get Price2021-6-3 · Two series of binary graft cationic starch-based flocculants (CS-DMCs and CS-DMLs) with different hydrophilicity and charge density (CD) were prepared …
Get Price2015-7-13 · The efficient use of renewable resources (e.g., starch) is essential to the green economy. On the basis of commercially available microparticle retention and drainage systems, the process concept of trapping unmodified starch granules in mineral-filled cellulosic fiber networks for strength enhancement by incorporation of cationic polymer flocculant pretreated/bridged starch granules in ...
Get Price2018-6-6 · substances, such as cationic starch,4,5) and cationic polyacrylamide,6) has been shown to decrease the amount of polymer that is adsorbed on cellulose. This is explained by the lower amount needed to compensate for the surface charge and reach charge neutrality.5) The molecular weight of the cationic polymer is another
Get PriceThe starch has a degree of substitution of 0.033. 98% of the cationic starch material is mixed with 2% by weight polyacrylamide polymer of about 5 × 10 6 average molecular weight. EXAMPLE NO. 3 The product of Example No. 2 is added to water and cooked with steam for 20 minutes at 195° F. to gelatinize the starch.
Get PriceContact us: From us, you can easily purchase Cationic Polyacrylamide at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at [email protected] We invite you to contact us …
Get Pricefor the starch substrates were approximately 25% with grafting efficiencies of about 70%. Polyacrylamide graft molecular weights ranged from 317,000 to 769,000. Absorbencies at pH 7 for saponified graft copolymers prepared with unmodified starches were approximately 200 g/g and approximately 150 g/g for the cationic star-ches, dextran, and PVOH.
Get PriceDewatering performance of five cationic starch-based polymers with charge densities ranging from 0.38 to 0.94 meq/g and molecular weights ranging from 5 × 104 g/mol to 5 × 105 g/mol were compared with five cationic acrylamide-based polymers with charge densities that ranged from 1 to 3.05 meq/g and molecular weights that ranged from 10 × 106 ...
Get PriceCATCS showed better flocculation performance than cationic starch and chitosan in 5 g/L kaolin suspension trended to performance well in acidic and alkaline solution. The comparison of the flocculation performance between CATCS, Fe 2 (SO 4) 3 and polyacrylamide polyacrylamide Subject Category: Commodities and Products
Get Price2018-6-6 · substances, such as cationic starch,4,5) and cationic polyacrylamide,6) has been shown to decrease the amount of polymer that is adsorbed on cellulose. This is explained by the lower amount needed to compensate for the surface charge and reach charge neutrality.5) The molecular weight of the cationic polymer is another
Get PriceThe starch has a degree of substitution of 0.033. 98% of the cationic starch material is mixed with 2% by weight polyacrylamide polymer of about 5 × 10 6 average molecular weight. EXAMPLE NO. 3 The product of Example No. 2 is added to water and cooked with steam for 20 minutes at 195° F. to gelatinize the starch.
Get PriceAbstract Cassava starch- g -polyacrylamide (PAM) was successfully prepared by a reactive batch processing using a specially designed batch reactor resulting in a superabsorbent polymer (SAP) with water absorption of 605 g/g being obtained under the optimized reaction conditions. The occurrence of a graft copolymer was confirmed by FT-IR spectra, where it was found to exhibit all characteristic ...
Get PriceUS5104487A US07/568,396 US56839690A US5104487A US 5104487 A US5104487 A US 5104487A US 56839690 A US56839690 A US 56839690A US 5104487 A US5104487 A US 5104487A Authority US United States Prior art keywords starch furnish cationic gum cationic starch Prior art date 1988-09-02 Legal status (The legal status is an assumption and is not a legal conclusion.
Get Price2018-4-4 · Cationic (positively charged) Non-ionic (no charge) Organic or inorganic •Organic polymers can be: Natural (e.g. starch, rubber, DNA, proteins) Synthetic (e.g. nylon, teflon, PVC, polyacrylamide) Semi-synthetic (e.g. vulcanized rubber, chitosan) What are polymers? • …
Get PriceContact us: From us, you can easily purchase Cationic Polyacrylamide at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at [email protected] We invite you to contact us …
Get PriceCATCS showed better flocculation performance than cationic starch and chitosan in 5 g/L kaolin suspension trended to performance well in acidic and alkaline solution. The comparison of the flocculation performance between CATCS, Fe 2 (SO 4) 3 and polyacrylamide polyacrylamide Subject Category: Commodities and Products
Get PriceCationic starch-grafted-cationic polyacrylamide based graphene oxide ternary composite flocculant: Cationic starch-grafted-cationic polyacrylamide based graphene oxide ternary composite flocculant for the enhanced flocculation of oil sludge suspension In this study, a novel, highly efficient and environmentally friendly ternary composites...
Get Price2019-12-31 · (meq./g) Cationic Starch D.S. 0.035 0.2 Polyaluminium chloride (PAC) 3.0 Polyacrylamide 40% Mole 3.3 Polyethylene imine (PEI) 5.1 Polydadmac 6.2 Polyamine 7.4 Primary amine-Hofmann 8.0 Polyvinyl amine 10.0 Ionic Charge PCD and Zeta Potential Charge control is influenced by the chemicals & dosage applied, furnish
Get PriceAbstract Cassava starch- g -polyacrylamide (PAM) was successfully prepared by a reactive batch processing using a specially designed batch reactor resulting in a superabsorbent polymer (SAP) with water absorption of 605 g/g being obtained under the optimized reaction conditions. The occurrence of a graft copolymer was confirmed by FT-IR spectra, where it was found to exhibit all characteristic ...
Get Price2021-1-13 · kaolin, e.g., cationic starch, polyacrylamide and rosin-alum. For the case of using cationic starch the mode of chemical addition is pulp, cationic starch, filler and alum. The choice of 2% kaolin depends on the fact that there is a reduction in the strength properties accompanies the increase in kaolin beyond 2% percent (6).
Get Price2018-4-4 · Cationic (positively charged) Non-ionic (no charge) Organic or inorganic •Organic polymers can be: Natural (e.g. starch, rubber, DNA, proteins) Synthetic (e.g. nylon, teflon, PVC, polyacrylamide) Semi-synthetic (e.g. vulcanized rubber, chitosan) What are polymers? • …
Get PriceAbstract The flocculation kinetics of kaolin particles suspended in 0.01 mol/L NaCl solution and adsorption properties of cationic starch on kaolin surface have been investigated at pH 5.0. Adsorption kinetics of cationic starch followed pseudo-second-order model (R2 > 0.98). Flocculation kinetics showed that increase in flocculant dosage resulted in higher rate constants for the flocculation ...
Get PriceThe invention relates to a method for dissolving cationic starch. In the method is obtained an aqueous polyelectrolyte solution comprising a synthetic cationic polymer, which has a charge density value of at least 0.1 meq/g, determined at pH3, the concentration of the cationic polymer in the polyelectrolyte solution being > 2.5 weight-%, and the aqueous polyelectrolyte solution is brought ...
Get PriceReactive extrusion of starch-polyacrylamide graft copolymers using various starches. Polymers and the Environment. 14:125-129. Interpretive Summary: Starch, a renewable product from crops such as corn, wheat, and potatoes, is a low-cost raw material that offers …
Get PriceCationic starch-grafted-cationic polyacrylamide based graphene oxide ternary composite flocculant: Cationic starch-grafted-cationic polyacrylamide based graphene oxide ternary composite flocculant for the enhanced flocculation of oil sludge suspension In this study, a novel, highly efficient and environmentally friendly ternary composites...
Get PriceCatioinc Polyacrylamide Water In Oil Emulsion , Find Complete Details about Catioinc Polyacrylamide Water In Oil Emulsion,Polyacrylamide Emulsion,Oil In Water Emulsifier,Oil Water Centrifuge from Leather Auxiliary Agents Supplier or Manufacturer-Dongying Naxing Trading Co., Ltd.
Get Pricesolid cationic starch. Synthesis of starch grafted dicyandiamide oxymethylene polymers A total of 10 g of the preceding cationic starch product was added to a four-necked flask equipped with a stirrer, a condenser reflux tube, and a thermometer. The product was gelatinized at 80 °C for 30 min and was cooled down to 40 °C. Initiator and acrylamide
Get Price2021-1-13 · kaolin, e.g., cationic starch, polyacrylamide and rosin-alum. For the case of using cationic starch the mode of chemical addition is pulp, cationic starch, filler and alum. The choice of 2% kaolin depends on the fact that there is a reduction in the strength properties accompanies the increase in kaolin beyond 2% percent (6).
Get Price2019-1-18 · “Polyacrylamide grafted starch (St-g-PAM The aim of the present article is to prepare potato starch microparticles by combining the hydro-lysis and sonication methods, and to enable the copolymerization of acrylamide (monomer) graft through the chains of the potato starch micro-particles using microwaves.
Get Price2021-7-13 · Cementing Fluid Loss Additive G ZOC-G87S-A EQUAL TO HALAD 344 ZOC-G87S has good versatility and can be applied to many kinds of cement slurry systems. ZOC-G87S is suitable for a wide range of temperature, high temperature resistance to 180 degrees C, good fluidity and stability of cement slurry syste...
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Get Price2003-3-6 · starch, to increase in the acidic pH range and to decrease in the alkaline pH range. Adsorption of starch was found to be low and practically insensitive to the pH changes. The amount of starch adsorbed was found to increase up to 10-4 kmol m-3 total amine concentration; higher levels of amine resulted in reduced uptake of starch.
Get Price2016-6-25 · As it is observed in Fig. 2, first pass retention was increased by adding cationic starch at both levels of 1.8% and 2.4%. However, this increase was more evident at the loading level of 2.4% cationic starch. In addition, with the dual system of cationic starch and nano-silica, even more progress in the first pass retention was observed (Table 2).
Get Price2011-1-16 · The starch-grafted cationic polyacrylamide(S-g-CPAM) was used as flocculant to treat Kaolin suspensions. It was found that the optimal cationic degree was 10.0%, the grafting was 221%, and the optimal dosage was 2.0 mg·L-1. Key words:starch 收稿日期 自然 ...
Get Price2021-7-5 · US8980056B2 - Composition and process for increasing the dry . A dry strength additive composition generally includes an anionic and/or amphoteric polyacrylamide having a molecular weight of less than 1,000,000 Daltons, wherein the amphoteric polyacrylamide has a net negative charge; a cationic and/or amphoteric starch; and a cationic non-starch polymer having a charge density greater …
Get Price1992-7-13 · Adsorption of the cationic polyacrylamide and quaternary polyamine were determined to be approximately 0.1 g and 0.3 g per gram of bentonite, respectively. ... Starch was used for fluid-loss ...
Get PriceAbstract. Abstract. A polyacrylamide-grafted starch (St-g-AM-DMC-AMPS) flocculant for the coal slurry wastewater was prepared by using corn starch(St), acrylamide (AM), methyl acryloyloxyethy trimethyl ammonium chloride (DMC) as cationic monomer, 2- acrylamido-2- methyl acrylate sulfonic acid (AMPS) as anionic monomer through solution polymerization.
Get Price2019-2-25 · In another study, with increasing the concentration of cationic starch from 30 to 260 g/L in a clay suspension, the adsorption of cationic starch on the clay surface increased from 2 to 18 mg/g 41 ...
Get Price2020-7-28 · （16） Chen Y*, Tian G, Zhai B, Zhang H, Liang Y. Cationic starch-grafted-cationic polyacrylamide based graphene oxide ternary composite flocculant for the enhanced flocculation of oil sludge suspension[J]. Composites Part B-engineering, 2019,177(15) ...
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