Synthesis, characterization, properties, and derivatives of poly(starch-g-(1-amidoethylene)). I. Synthesis and characterization

✍ Scribed by John J. Meister; Mu Lan Sha

• Publisher: John Wiley and Sons
• Year: 1987
• Tongue: English
• Weight: 787 KB
• Volume: 33
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1987.070330601

✦ Synopsis

Poly(starch-g-(1-amidoethylene)) can be formed by aqueous, free radical polymerization of 2-propenamide on lintnerized, potato starch. Initiation is by attack of cerium io& ( + IV) on the D-glucopyranosyl units of starch. The reaction produces a water-soluble thicken& with molecular properties of the product controlled, in part, by the gel effect induced in virtually all syntheses. Yield of product varies from 38 to 100% with yields of 90-100% being common. Products containing less than 50 wt % sidechain were found to be di6cult to dissolve once they were recovered from the synthesis mixture. A sample with a design molecular weight of 0.8 X lo6 and 4 grafts per backbone formed 3.9 wt % of a water-insoluble solid in the reaction mixture. The solid, which had a composition similar to that of the reaction mixture, may be the result of selective reaction within the distribution of backbone molecules.