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Structure defects and thermal stability of poly(vinyl chloride)
Author(s) -
Zegelman V.I.,
Titova V.A.,
Pomerantseva E.Gr.,
Taikova T.A.,
Zilberman E.K.
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.19890290121
Subject(s) - polyene , vinyl chloride , maleic anhydride , chlorine , thermal stability , thermal decomposition , polymer chemistry , peroxide , double bond , chemistry , reactivity (psychology) , conjugated system , decomposition , diene , polyvinyl chloride , polymer , organic chemistry , natural rubber , medicine , alternative medicine , pathology , copolymer
Abstract The presence of polyene and peroxide structures in PVC and their contribution to the rate of thermal decomposition were determined using a large number of commercial suspension PVC samples. Two types of PVC having conjugated ‐C=C‐bonds with different reactivity towards dienophiles were found. Polymer samples of the first type react with chlorine, organic phosphites and maleic anhydride under mild conditions whereas the second type PVC under the same conditions reacts only with chlorine. The obtained data show that polyene structures in these two types of PVC are of cis and trans configuration, respectively. It was also demonstrated that the contribution of diene and peroxy groups to the rate of PVC thermal decomposition is greater than the contribution of any other anomalous structures.