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Nuclear magnetic resonance measurements of molecular weights. Self-diffusion of poly(methyl methacrylate) in acetonitrile

✍ Scribed by Raghavan, Ravi; Maver, Tammy L.; Blum, Frank D.

Book ID
126805124
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
597 KB
Volume
20
Category
Article
ISSN
0024-9297

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## Abstract 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 describ