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Rheological aspects in degradation and stabilization of poly(vinyl chloride)
Author(s) -
Gonnu M.,
Verney V.,
Michel A.
Publication year - 1989
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19890290116
Subject(s) - vinyl chloride , rheology , viscoelasticity , polymer , degradation (telecommunications) , materials science , chain scission , dispersion (optics) , radical , polymer chemistry , polyvinyl chloride , chemical engineering , chemistry , composite material , organic chemistry , copolymer , computer science , telecommunications , physics , optics , engineering
Viscoelastic properties of PVC depend on temperature because of the existence of a physical temporary network. The main consequence of gel state within the range of usual processing temperatures is a heterogeneous dispersion of stabilizers. PVC is most sensitive to the dehydrochlorination in the state of the intermediate flow between particulate and molecular flow because of radicals arised from polymer chain scission caused by shear stress.