Physical and Mechanical Behavior of Polymer Glasses. IV. Cross-Linked Poly(Methyl Methacrylate)

Temperature-induced relaxation of plastic deformation in cross-linked PMMA samples was studied. For cross-linked PMMA with low concentration of cross-linking agent (less, than 5.2 mol.%), relaxation curves: involve low-temperature component at temperatures well below glass transition temperature and...

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Bibliographic Details
Published in:International journal of polymeric materials 1997-04, Vol.36 (3-4), p.229-239
Main Authors: Arzhakov, M. S., Arzhakov, S. A.
Format: Article
Language:English
Subjects:
cross-linking
plastic deformation
PMMA
relaxation
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Summary:Temperature-induced relaxation of plastic deformation in cross-linked PMMA samples was studied. For cross-linked PMMA with low concentration of cross-linking agent (less, than 5.2 mol.%), relaxation curves: involve low-temperature component at temperatures well below glass transition temperature and high-temperature component at temperatures close to glass transition. Increasing concentration of cross-linked agents in polymer samples to 11.2 mol.% is accompanied with degeneration of high-temperature component of relaxation, and complete relaxation of plastic deformation proceeds via low-temperature component. The effect of cross-linking on temperature-induced relaxation of plastic deformation was discussed in terms of restriction of segmental mobility within certain structural regions in polymer sample.
ISSN:0091-4037
1563-535X
DOI:10.1080/00914039708029417