Premium
Kinetics of alcohol assisted craze growth in polycarbonate
Author(s) -
Kirloskar Mohan A.,
Donovan James A.
Publication year - 1987
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.760270205
Subject(s) - materials science , polycarbonate , kinetics , activation energy , composite material , plasticizer , solvent , methanol , stress relaxation , alcohol , stress (linguistics) , crystallization , chemical engineering , polymer chemistry , creep , organic chemistry , chemistry , linguistics , physics , philosophy , quantum mechanics , engineering
The kinetics of alcohol assisted, relaxation controlled craze growth in polycarbonate (PC) were studied between 280 to 340K in methanol, ethanol, propanol, butanol, and pentanol. Viscous deformation of plasticized craze material controlled the growth rate of a single craze during stress relaxation in single edge notched (SEN) specimens. The activation energy increased with craze driving force in all alcohols, except methanol, because of diffusion limited plasticization. The craze stress increased with the alcohol's ability to plasticize; this is not understood, but may be due to solvent Induced crystallization.