Molecular motion of polycarbonate in the vicinity of −60°C as revealed by broad-line n.m.r., magic angle spinning n.m.r. and conformational analysis |
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| Authors: | P. Tekely E. Turska |
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| Affiliation: | Polish Academy of Sciences, Institute of Polymer Chemistry, 41 -800 Zabrze, Poland |
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| Abstract: | On the basis of correlation of data obtained by broad-line n.m.r. and magic angle spinning n.m.r. analysis as well as conformational analysis, conclusions have been drawn concerning the nature of molecular motion occurring in a polycarbonate chain in the vicinity of ?60°C. It is postulated that this motion is connected with conformational reorientation of bisphenol in unordered chains with a random conformation. |
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| Keywords: | polycarbonate broad-line nuclear magnetic resonance magic angle spinning n.m.r. conformational analysis molecular motion |
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