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Mass diffusion of camphorquinone in poly(methyl methacrylate) hosts with different molecular weights (1990)

Xia, J. L. ; Wang, C. H.

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part B: Polymer Physics 28 (1990), S. 963-971

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ISSN: 0887-6266

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: Diffusion coefficients of camphorquinone (CQ) and its photoproduct (CQP) in two poly(methyl metbacrylate) (PMMA) samples with different molecular weights are measured as a function of temperature. Above the glass transition, the temperature dependence is not Arrhenius and can be described by the Williams-Landel-Ferry equation. It is also shown that the difference in the temperature dependence of the diffusion coefficients of CQ in the two PMMA samples is attributable to the difference in glass transition temperatures.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/polb.1990.090280612

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