Relaxation processes in a block copoly(ether‐ester) elastomer investigated by the spin probe method

Wiley - Tập 186 Số 8 - Trang 1679-1683 - 1985
Franciszek Lembicz1, R. Ukielski2
1Institute of Physics, Technical University of Szczecin, Al. Piastów 17, 70-310 Szczecin, Poland
2Institute of Chemical Technology, Technical University of Szczecin, Al. Piastów 17, 70-310 Szczecin, Poland

Tóm tắt

AbstractRelaxation processes in the soft segment phase of a block copoly(ether‐ester) elastomer were investigated using the spin probe method. Rotational mobility of the two probes, differing in sizes, were analysed and the results were interpreted based on the relaxation diagram. It was found that the change in mobility of the probes, as detected by the change in ESR line shape, in the slow rotation region corresponds to the β‐relaxation, whereas that in the rapid rotation region corresponds to the α + β‐relaxation. The analysis of probe mobilities, including the way they rotate, indicates the necessity of inclusion of rotational anisotropy in the interpretation of the behaviour of probes of different size.

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Tài liệu tham khảo

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Wiley

Tập 186 Số 8

1679-1683

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