A Physical Ageing Effect Observed in the 60 kHz Domain of Melt-Cast Poly(Methyl Methacrylate) by CPPEMAS exp 13 C-NMR Relaxation Measurements

A Physical Ageing Effect Observed in the 60 kHz Domain of Melt-Cast Poly(Methyl Methacrylate) by CPPEMAS exp 13 C-NMR Relaxation Measurements

An ageing effect on T sub 1 rho (C), determined by CPPEMAS exp 13 C-NMR measurements, has been demonstrated in melt-cast poly(methyl methacrylate). Based on the evidence for this effect, it is shown to be necessary to devise appropriate annealing procedures for melt-cast polymer test samples. Graphs...

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Veröffentlicht in:European polymer journal 1990-01, Vol.26 (4), p.493-494
Hauptverfasser: Allen, P E M, Hagias, S, Hounslow, A M, Williams, D R G
Format: Artikel
Sprache:eng
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Zusammenfassung:An ageing effect on T sub 1 rho (C), determined by CPPEMAS exp 13 C-NMR measurements, has been demonstrated in melt-cast poly(methyl methacrylate). Based on the evidence for this effect, it is shown to be necessary to devise appropriate annealing procedures for melt-cast polymer test samples. Graphs. 4 ref.--AA
ISSN:0014-3057