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Glass transition temperature and molecular weight distribution of irradiated polymethylmethacrylates

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Abstract

A mechanical torsion pendulum has been used to observe changes in viscoelastic behaviour resulting from modification of polymer structure. The linear dependence of transition temperature on reciprocal average molecular weight has been confirmed for irradiated polymethylmethacrylate polymers. Gel permeation measurements are consistent with simultaneous end-linking and chain scission at low radiation levels, leading to apparently anomalous behaviour in irradiated “Perspex”.

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Authors and Affiliations

  1. Department of Industrial Science, University of Melbourne, Australia

    G. J. Pratt

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  1. G. J. Pratt
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Pratt, G.J. Glass transition temperature and molecular weight distribution of irradiated polymethylmethacrylates. J Mater Sci 10, 809–813 (1975). https://doi.org/10.1007/BF01163075

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  • DOI: https://doi.org/10.1007/BF01163075

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