Water diffusion in unsaturated polyester films. Effect of plasticization on the glass transition | Zendy

Marais S. | Zendy; Metayer M. | Zendy; Labbe M. | Zendy; Legras M. T. | Zendy; Saiter J. M. | Zendy

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Water diffusion in unsaturated polyester films. Effect of plasticization on the glass transition

Author(s) -

Marais S.,

Metayer M.,

Labbe M.,

Legras M. T.,

Saiter J. M.

Publication year - 1999

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.11543

Subject(s) - plasticizer , materials science , diffusion , differential scanning calorimetry , glass transition , fick's laws of diffusion , polyester , polymer , sorption , polymer chemistry , thermodynamics , chemical engineering , composite material , chemistry , physics , adsorption , engineering

Water diffusion through Unsaturated Polyester Resin (UPR) is investigated. From differential scanning calorimetry, we observe that the plasticization effect due to water sorption leads to large variations of T g and is a reversible phenomenon. The transport of water through the polymer is characterized with a new instrument developed in our laboratory which shows that the water transport deviates from Fickian behavior. It is found that the diffusion coefficient is not a constant and experimental data are in good agreement with D = D o e γC where γ is a plasticization coefficient.

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