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Diffusion of dioctyl phthalate into poly(vinyl chloride)
Author(s) -
Grotz Leonard C.
Publication year - 1965
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.1965.070090119
Subject(s) - vinyl chloride , phthalate , diffusion , activation energy , polymer chemistry , suspension polymerization , suspension (topology) , glass transition , chloride , polyvinyl chloride , materials science , polymerization , diffusion process , chemistry , analytical chemistry (journal) , polymer , thermodynamics , organic chemistry , composite material , copolymer , physics , knowledge management , mathematics , innovation diffusion , homotopy , computer science , pure mathematics
Diffusion coefficients were determined gravimetrically for the diffusion of dioctyl phthalate into disks of suspension‐polymerized poly(vinyl chloride) in the temperature range of 65–85°C. After an initial induction period, values of D were obtained which ranged from 10 −10 to 10 −8 cm. 2 /sec. and which gave an activation energy of 60 kcal./mole. The diffusion rates showed an inverse dependence on the number‐average molecular weight of the poly(vinyl chloride), indicating that the chain ends are the primary point of attack in the diffusion process below the glass transition temperature.