RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS

ZHANG Liansheng; A.F. Johnson

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RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS

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- RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS
- Vol. 11, Issue 2, Pages: 144-152(1993)
- Affiliations：
  
  1. Department of Chemistry and Chemical Technology , University of Bradford,England,Bradford,BD7 1DP
  2.   University of Bradford
  3.   Bradford BD7 IDP
  4.   England Dpt.Chem.Heilongjiang Universiry
  5.   24 Xuefu Road Harbin China Received December 23  ,150080
  6.   .  ,1991
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 June 1993
- Accepted：
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[1]张连生,A.F.Johnson.RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS[J].Chinese Journal of Polymer Science,1993,{4}(02):144-152.

ZHANG Liansheng, A.F. Johnson. RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS[J]. 1993, 11(2): 144-152.
[1]张连生,A.F.Johnson.RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS[J].Chinese Journal of Polymer Science,1993,{4}(02):144-152. DOI：

ZHANG Liansheng, A.F. Johnson. RADICAL GRAFTING REACTIONS ONTO STARCH AND OTHER WATER-SOLUBLE COPOLYMERS IN ISOLATED GEL DROPLETS[J]. 1993, 11(2): 144-152. DOI：

摘要

正

A novel radical grafting copolymerization process has been designed for water-soluble polymers which avoids the problems of conducting grafting reactions in highly viscous polymerization media. A variety of water-soluble graft copolymers having starch or dextran as the backbone chain with grafted side chains of polyacrylamide （—AM—）

poly （acrylic acid ）（—AA—）

poly （acrylamide-co-acrylic acid）（—AM—NH

AA—） or poly （ acrylamide-co-2-acryiamido-2-methyl-l-propanesulphinic acid）（—AM—AMPS—） have been synthesized in gel droplets using aceric sulphate redox initiator

and their properties compared. The reaction conditions were optimized taking into account reaction kinetic data and the observed properties of the products produced under different reaction conditions. The effects of the ratios of [backbone]/[graft monomer]

[ AM]/[ AA]

/[AMPS]

[Ce

]/[ S

=] and pH value on the reaction rate

conversion

grafting degree

grafted chain length and the product molecular weight have been investigated.

Abstract

poly （acrylic acid ）（—AA—）

poly （acrylamide-co-acrylic acid）（—AM—NH

AA—） or poly （ acrylamide-co-2-acryiamido-2-methyl-l-propanesulphinic acid）（—AM—AMPS—） have been synthesized in gel droplets using aceric sulphate redox initiator

[ AM]/[ AA]

/[AMPS]

[Ce

]/[ S

=] and pH value on the reaction rate

conversion

grafting degree

grafted chain length and the product molecular weight have been investigated.

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