A theory of pseudo cross-link |
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Authors: | Junji Furukawa |
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Affiliation: | (1) Department of Applied Chemistry, Aichi Institute of Technology, Yakusa-cho, 470-03 Toyota, Japan |
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Abstract: | Summary A theory of pseudo cross-link model suggests the existence of multiple links of various size composed of 116 segmental units. They possesses the heat and entropy of various magnitude giving various transition temperature, TA for the cross-link composed of 4 segments and TB for that of 16 segments. The glass-transition point Tg and the melting point Tm are defined by the different size of lateral multiple links. Relationships, Tm = 2 TA and Tg = (2/3)Tm = (4/3)TA, are derived. A wedge-type relaxation spectrum is obtained as a distribution of size of cross-links. For temperature dependence the WLF-equation is obtained. |
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