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Kinetics of crosslinking of poly(vinyl chloride) in the presence of tetramethylthiuram disulfide and zinc oxide
Author(s) -
Ducháček Vratislav,
Kuta Antonín
Publication year - 1982
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.1982.070270513
Subject(s) - vinyl chloride , zinc , kinetics , polymer chemistry , oxide , chemistry , chloride , materials science , disulfide bond , organic chemistry , polymer , copolymer , biochemistry , physics , quantum mechanics
Continuous measurements in a Vuremo curemeter at temperatures from 160°C to 195°C were used to estimate the extent of crosslinking of poly(vinyl chloride) which was plotted against cure time. The linearized forms of the cure curves clearly show that at obvious tetramethylthiuram disulfide–zinc oxide concentrations, the course of crosslinking differs significantly from the first‐order rate law. These digressions caused by the degradation crosslinking of poly(vinyl chloride) were diminished by increasing tetramethylthiuram disulfide concentration, which simultaneously increases the ultimate extent of controlled crosslinking. On the basis of the above results, a method of the kinetic analysis of the cure curves is discussed.