Some aspects of plasticizer migration from poly(vinyl chloride) sheets | Zendy

Papaspyrides C. D. | Zendy

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Some aspects of plasticizer migration from poly(vinyl chloride) sheets

Author(s) -

Papaspyrides C. D.

Publication year - 1986

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.1986.070320730

Subject(s) - phthalate , plasticizer , vinyl chloride , diffusion , methanol , polyvinyl chloride , kinetics , polymer chemistry , thermodynamics , chloride , chemistry , materials science , chemical engineering , organic chemistry , polymer , physics , quantum mechanics , engineering , copolymer

Long‐term migration data, by radioactivity measurements, are presented for the systems poly(vinyl chloride) (PVC)/labelled dioctyl phthalate (DOP)/methanol, n ‐propanol, or n ‐butanol. At equilibrium, migration levels determined exceed 85% for methanol and reveal complete removal for the higher alcohols. Migration kinetics failed to be described by the long‐term Fickian approximation with a diffusion coefficient independent of concentration. Nevertheless, q t / q ∫ , where q ∫ the amount migrated at infinite time and q t the amount lost up to time t , increases linearly with (time) 1/2 /(thickness) during the initial stages of the process and then a linear also relationship appears, but with severely reduced slope. Similar data concerning the systems PVC/DOP/petroleum oils confirm the behavior observed.

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