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Diluent diffusion in polymer‐diluent systems near T g : Migration of phthalic esters from PVC to water
Author(s) -
Zieminski Kenneth F.,
Peppas Nikolaos A.
Publication year - 1983
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.1983.070280518
Subject(s) - diluent , phthalate , plasticizer , polymer , diffusion , polymer chemistry , chloride , phthalic acid , chemistry , materials science , chemical engineering , thermodynamics , organic chemistry , physics , engineering
A new mathematical model is presented for the description of certain types of diluent diffusion (migration) through diluent–polymer systems. The model describes anomalous diluent transport into a container of finite volume, and it incorporates mass transfer limitations at the polymer/extractant interface. The extractant is assumed to diffuse slowly or negligibly into the polymer. The model is applied to experimental data obtained with two plasticizers, di(2‐ethyl‐ n ‐hexyl) phthalate and benzyl butyl phthalate, migrating from poly(viny1 chloride) to water.