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The absorption of methanol by poly(methyl methacrylate). Special morphological effects observed with beads prepared by suspension polymerization

✍ Scribed by P.E.M. Allen; S. Hagias; D.R.G. Williams; E.H. Williams

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
512 KB
Volume
26
Category
Article
ISSN
0014-3057

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✦ Synopsis

I H-NMR chemical shifts and line-widths of absorbed methanol and the CPPEMAS 13C-NMR spectra and relaxation times of 13C in the rotating frame (T~p) of the absorbing polymer discriminate the morphologies of solid poly(methyl methacrylate) (PMMA). PMMA prepared by suspension polymerization absorbs more methanol than cast or precipitated samples. Three methanol domains can be distinguished. Chain packing and conformation change on uptake of methanol.

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