Synthesis and Characterization of Starch-Poly(vinyl Acetate) Graft Copolymers and their Saponified Form
โ Scribed by S. H. Samaha; H. E. Nasr; A. Hebeish
- Publisher
- Springer
- Year
- 2005
- Tongue
- English
- Weight
- 633 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1022-9760
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## Abstract Graft polymerizations of vinyl acetate onto granular corn starch were initiated by cobaltโ60 irradiation of starchโmonomerโwater mixtures, and ungrafted poly(vinylacetate) was separated from the graft copolymer by benzene extraction. Conversions of monomer to polymer were quantitative a
Methacrylic acid (MA) was graft polymerized onto starch using Ce 4/ initiator in aqueous medium. The dependence of grafting on the reaction variables, such as monomer and initiator concentration and time and temperature, was studied in detail. Acid hydrolysis and infrared (IR) spectroscopy were used