Inverse Emulsion of Starch-graft-Polyacrylamide - Wiley ...
A series of graft copolymers of starch with polyacrylamide was made by using a K 2 S 2 O 8 initiation system in inverse emulsion. The corresponding anionic graft copolymers, which have a different hydrolysis degree, are prepared by alkaline hydrolysis of the uncharged graft copolymers.
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Inverse Emulsion of Starch‐graft‐Polyacrylamide
Supporting: 1, Mentioning: 13 - 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 content, a high ...
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Copolymers of starch, a sustainable template for biomedical ...
The graft copolymerization of acrylamide onto konjac glucomannan (KGM) was studied with inverse emulsion polymerization to obtain an effective thickener. The effects of the initiator concentration, emulsifier concentration, comonomer concentration, reaction temperature, and reaction time on the graft copolymerization were investigated. The results showed that the polymerization system retained ...
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Synthesis and application of cationic starch graft polymer ...
A series of graft copolymers of starch with polyacrylamide was made by using a K 2 S 2 O 8 initiation system in inverse emulsion. The corresponding anionic graft copolymers, which have a different hydrolysis degree, are prepared by alkaline hydrolysis of the uncharged graft copolymers. Adequate hydrolytic conditions including type and amount of hydrolyzing agent, temperature, and time were ...
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Study on the Synthesis and Application of Starch‐graft‐Poly ...
When adding 0.05% of the grafted starch [S-g-P(AM-co-DADMAC)] to the papermaking system, a higher filler retention was obtained than with cationic starch and cationic polyacrylamide when the cationic degree of S-g-P(AM-co-DADMAC) was 22% and its
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Shaojie Lu - Semantic Scholar
Semantic Scholar extracted view of "HRP-mediated synthesis of starch-polyacrylamide graft copolymers" by R. Shogren et al. DOI: 10.1016/J.CARBPOL.2008.07.004 Corpus ID: 85183562 HRP-mediated synthesis of starch-polyacrylamide graft copolymers @article ...
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Starch-g-Copolymers: Synthesis, Properties and Applications ...
Summary: The effects of monomer/starch feed ratios and moisture content during reactive extrusion of starch-polyacrylamide graft copolymers were investigated. Acrylamide/ starch ratios ranged from 0.20 to 1.87 at 50% moisture content, while moisture content was ...
Get PriceHow is amphoteric starch-graft-polyacrylamide (S-G-Pam) prepared?
An amphoteric starch-graft-polyacrylamide (S-g-PAM) was prepared by inverse emulsion polymerization, subsequent hydrolysis reaction and Mannich reaction. The copolymerization was carried out using ammonium persulfate and urea as redox initiator. The reaction conditions and application as flocculant were investigated.
Is starch a polysaccharide?
Starch is a naturally abundant polysaccharide and a low cost material. Many chemical modifications of starch have been carried out for its use, such as etherification, esterification, oxidization, cross-linking and graft copolymerization through hydroxyl groups.
Is amphoteric S-G-Pam better than cationic polyacrylamide?
The application test showed that the results of treatment of several kinds of industrial waste water by amphoteric S-g-PAM were better than those treated with cationic polyacrylamide (PAM), hydrolytic PAM and amphoteric PAM. Starch is a naturally abundant polysaccharide and a low cost material.
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