Crazing in Two and Three Dimensions. 2. Three-Dimensional Crazing

Crazing in thick polymer glass films and bulk glassy polymers is theoretically investigated. A simple microscopic model that treats an amorphous polymer at stresses above the yield stress as a viscous fluid with the scale-dependent surface tension is developed. Craze microstructural parameters inclu...

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Bibliographic Details
Published in:Macromolecules 1999-07, Vol.32 (15), p.5036-5045
Main Authors: Krupenkin, T. N, Fredrickson, G. H
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical properties
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:Crazing in thick polymer glass films and bulk glassy polymers is theoretically investigated. A simple microscopic model that treats an amorphous polymer at stresses above the yield stress as a viscous fluid with the scale-dependent surface tension is developed. Craze microstructural parameters including fibril diameter, spacing, and draw ratio are calculated. Crazing stress and critical thickness are determined as functions of material parameters and conditions of testing. The obtained results are in good quantitative agreement with experimental data.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma9810159