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Polymerization activity test for vinyl chloride
Author(s) -
Georgieff K. K.
Publication year - 1964
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1964.070080518
Subject(s) - vinyl chloride , chloroprene , autoclave , benzoyl peroxide , polymerization , polymer chemistry , dichloroethane , polymer , monomer , materials science , chloride , peroxide , chemistry , nuclear chemistry , copolymer , catalysis , organic chemistry , natural rubber
A polymerization activity test has been developed for evaluating the purity of commercial vinyl chloride. A 40‐g. portion of vinyl chloride is heated with 0.500 g. of benzoyl peroxide for 2 hr. at 70°C. in a glass liner in a stainless steel autoclave, and the weight of the polymer formed determined. The effects of the heat transfer medium in the autoclave, time, oxygen, limited agitation, catalyst concentration, and temperature on the percentage conversion of monomer to polymer were determined. The effect of acetaldehyde, crotonaldehyde, chloroprene, 1,1‐dichloroethane, trans ‐1,2‐dichloroethylene, paraldehyde, and 1,1,2‐trichloroethane on the conversion and the molecular weight of the polymer are described.