Water absorption and its effect on polyarylate | Zendy

Golovoy A. | Zendy; Cheung M. F. | Zendy

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Water absorption and its effect on polyarylate

Author(s) -

Golovoy A.,

Cheung M. F.

Publication year - 1988

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.1988.070350609

Subject(s) - absorption of water , activation energy , hydrolysis , thermal diffusivity , embrittlement , ultimate tensile strength , absorption (acoustics) , materials science , mole , polymer chemistry , chemistry , organic chemistry , composite material , physics , quantum mechanics

Water absorption and its effect on the tensile and impact properties of polyarylate was studied by immersing polyarylate specimens in water baths, between 23 and 98°C. The diffusivity was calculated to be 11 × 10 −9 cm 2 /s at 23°C with an activation energy of 9.8 kcal/mole. The aromatic ester in polyarylate is hydrolyzed by water, which was found to cause a decrease in molecular weight and in mechanical properties. In the early stage, the reaction is zero‐order and the activation energy of the hydrolytic embrittlement is 22 kcal/mole.

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