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Preparation and application of low molecular weight poly(vinyl chloride). I. Preparation and thermal stability
Author(s) -
Yamamoto Kikuo,
Maehara Takashi,
Mitani Katsuo,
Mizutani Yukio
Publication year - 1994
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.1994.070510422
Subject(s) - vinyl chloride , thermogravimetry , thermal stability , polymer chemistry , degree of polymerization , polymerization , suspension polymerization , chemistry , polyvinyl chloride , chemical engineering , suspension (topology) , materials science , organic chemistry , polymer , inorganic chemistry , copolymer , engineering , mathematics , homotopy , pure mathematics
Poly(vinyl chloride) with relatively low molecular weight (LMW‐PVC) was prepared by suspension polymerization in the presence of some chain‐transfer agents, such as mercapto compounds. It is elucidated by means of thermogravimetry, dehydrochlorination, color difference, and discoloration that the resultant LMW‐PVC has good thermal stability. The degree of dehydrochlorination of the LMW‐PVC obtained by using n ‐dodecylmercaptan increases with increasing the content of component from the chain‐transfer agent. It is found that the LMW‐PVC obtained by using mercapto compounds shows better thermal stability (discoloration property) than does the one obtained without using these agents, at the same weight‐average polymerization degree. © 1994 John Wiley & Sons, Inc.