Towards a molecular approach to physical
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Pethrick, Richard A.; Davis, William J.
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Article
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1998
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John Wiley and Sons
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English
β 258 KB
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Physical ageing studies are reported on poly(methyl methacrylate) (PMMA) using positron annihilation lifetime spectroscopy (PALS), dielectric relaxation spectroscopy (DRS) and dynamic mechanical thermal analysis (DMTA). A comparison of the results obtained from these di β erent techniques indicates t