Preparation of block copolymers from occluded vinyl acetate macroradicals

Autor:	Raymond B. Seymour, G. Allan Stahl
Rok vydání:	1976
Předmět:	Acrylate Chemistry organic chemicals technology industry and agriculture macromolecular substances Methacrylate Vinyl polymer Solvent chemistry.chemical_compound Monomer Polymerization Polymer chemistry Vinyl acetate Copolymer
Zdroj:	Journal of Polymer Science: Polymer Chemistry Edition. 14:2545-2552
ISSN:	1542-9369 0360-6376
DOI:	10.1002/pol.1976.170141019
Popis:	Stable vinyl acetate macroradicals were produced by polymerization in a nonviscous poor solvent, a viscous good solvent and a viscous poor solvent. These macroradicals were then allowed to react with a second vinyl monomer to produce block copolymers. The formation of block copolymers was monitored for rate and yield data. The block copolymers produced were poly(vinyl acetate-b-methyl methacrylate), poly(vinyl acetate-b-acrylic acid), poly(vinyl acetate-b-vinylpyrrolidone), poly(vinyl acetate-b-acrylonitrile), poly(vinyl acetate-b-styrene), and poly(vinyl acetate-b-methyl acrylate). The block copolymers were characterized by yield, precipitation in selected solvents, pyrolysis gas chromatography, and differential scanning calorimetry.
Databáze:	OpenAIRE
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