The effect of cold rolling on crazing of polycarbonate

This work shows the crazing behaviour of pre-oriented polycarbonate after tensile testing close to the liquefaction temperature of nitrogen (77 K). The pre-orientation achieved by cold rolling reveals the presence of crazes from 0% to 50% pre-orientation. Crazes were suppressed at 75% pre-orientatio...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1989-11, Vol.119 (1), p.231-237
Main Authors: Shonaike, G.O., Reed, P.E.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical properties
Physical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
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Summary:This work shows the crazing behaviour of pre-oriented polycarbonate after tensile testing close to the liquefaction temperature of nitrogen (77 K). The pre-orientation achieved by cold rolling reveals the presence of crazes from 0% to 50% pre-orientation. Crazes were suppressed at 75% pre-orientation. Surface crazes were observed and, where they did occur, the form of the crazes changed as the pre-orientation increased. Increasing pre-orientation resulted in a decrease in craze density, depth and length. This reduction in craze dimension and concentration is attributed to the molecular orientation.
ISSN:0921-5093
1873-4936
DOI:10.1016/0921-5093(89)90542-X