Strain-induced crystallization of peroxide-crosslinked natural rubber
Strain-induced crystallization of peroxide-crosslinked natural rubber
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DOI：
10.1016/j.polymer.2007.01.006
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发表时间：
2007-02-23
期刊：
影响因子：
4.6
通讯作者：
Kohjiya, Shinzo
中科院分区：
文献类型：
--
作者：
Ikeda, Yuko;Yasuda, Yoritaka;Kohjiya, Shinzo
采用快速时间分辨同步广角x射线衍射研究了网络链密度(v)对过氧化物交联天然橡胶应变诱导结晶的影响。观察,发病时的伸长比应变结晶(α(c))成为较小的增加诉熵之间的差异未变形的和畸形的状态在每一个交流几乎是等于尽管诉计算熔化温度的变化在ac的样品也几乎是一样的,不管你诉这些观察意味着应变结晶时发生的变形带来一个明确的过氧化物交联天然橡胶的熵态。他们同意Flory的预测，并与经典的橡胶弹性理论相一致。(c) 2007 Elsevier Ltd.版权所有。
Effect of network-chain density (v) on the strain-induced crystallization of peroxide-crosslinked natural rubber was studied by fast time-resolved synchrotron wide-angle X-ray diffraction. It was observed that the elongation ratio at the onset of strain-induced crystallization (alpha(c)) became smaller with the increase of v. The difference of the entropy between the undeformed and deformed states at each ac was nearly equal in spite of the variation of v. The calculated melting temperature at ac of the samples was also almost the same regardless of their v. These observations mean that the strain-induced crystallization occurred when the deformation brought about a definite entropic state for peroxide-crosslinked natural rubber. They agreed with the prediction by Flory and were consistent with the classical theory of rubber elasticity. (c) 2007 Elsevier Ltd. All rights reserved.