Simultaneous diffusion of benzyl alcohol into plasticized poly(vinyl chloride) and of plasticizer from polymer into liquid

Wiley - Tập 26 Số 7 - Trang 2315-2324 - 1981
Djelloul Messadi1, J.M. Vergnaud1
1Department of Industrial Chemistry, U.E.R. of Sciences, University of Saint‐Etienne, 42023 Saint‐Etienne Cédex, France

Tóm tắt

AbstractThe diffusion of benzyl alcohol and plasticizer in compression‐molded sheets of plasticized poly(vinyl chloride) was studied over the temperature range 30–55°C. A simultaneous diffusion occurred for benzyl alcohol into polymer and for dioctyl phthalate as plasticizer from polymer into liquid when the polymer was soaked in benzyl alcohol. The concentration of benzyl alcohol in polymer increased, rose to a maximum, and then decreased. Diffusion coefficients were measured by considering a nonsteady‐state phenomenon for plasticizer concentration of 25, 38, and 50 wt %, both for dioctyl phthalate and benzyl alcohol. Plasticizer concentration and temperature were found to play an important role.

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Wiley

Tập 26 Số 7

2315-2324

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