Effect of molecular weight on the polymorphic transformation of isotactic poly(1-butene)

Effect of molecular weight on the polymorphic transformation of isotactic poly(1-butene)
复制标题

分子量对等规聚(1-丁烯)多晶型转变的影响

DOI:
10.1016/j.polymdegradstab.2010.06.027
复制
发表时间:
2010-09
影响因子:
5.9
通讯作者:
Huafeng Shao
Huafeng Shao
中科院分区:
化学2区
文献类型:
--
作者:
Aihua He;Chunsheng Xu;Wei Yao;Baocheng Huang;Huafeng Shao

文献摘要

参考文献

被引文献

相似文献

采用傅立叶变换红外光谱(FT-IR)研究了室温下等规聚1-丁烯(iPB)的分子量对多晶型转变的影响。采用相变时间、相变速率和一定相变程度下I相和II相的相变时间差分析了室温时效iPB的相变动力学。结果表明,相II的还原可以在室温下快速发生,并且似乎不太依赖于分子量。而分子量对I相的形成有很大的影响。当第一相的相变程度达到90%时,可以观察到明显的相变时间差。为了更清楚地解释相II的还原和相I的生长的差异,从链构象水平绘制了不同分子量的iPB的相转变模型。DSC分析用于支持所提出的模型。
The effect of molecular weight on the polymorphic transformation of isotactic poly(1-butene)(iPB) under room temperature had been investigated by fourier transform infrared spectroscopy(FT-IR). The phase transformation time, phase transformation rate and phase transformation time difference between phase I and phase II at a given transformation degree were used to analysis the phase transformation kinetics of iPB aging at room temperature. The results show that the reduction of phase II can occur quickly at room temperature and seem less dependent on the molecular weight. However, the molecular weight has great effect on the formation of phase I. When the phase transformation degree for phase I reach 90%, a distinct transformation time difference can be observed. In order to clearly explain the difference in the reduction of phase II and the growth of phase I, a phase transformation model from the chain conformation level for iPB with different molecular weight have been drawn. DSC analysis was used to support the proposed model.
DOI: 10.1021/ma0015875
发表时间: 2001-04-10
期刊: MACROMOLECULES
影响因子: 5.5
作者:
Fu, Q;Heck, B;Thomann, Y
通讯作者: Thomann, Y
DOI: 10.1295/polymj.7.529
发表时间: 1975-09
期刊: Polymer Journal
影响因子: 2.8
作者:
Akira Tanaka;N. Sugimoto;T. Asada;S. Onogi
通讯作者: Akira Tanaka;N. Sugimoto;T. Asada;S. Onogi
DOI: 10.1007/bf00354556
发表时间: 1994-12
影响因子: 4.5
作者:
S. Kopp;J. Wittmann;B. Lotz
通讯作者: S. Kopp;J. Wittmann;B. Lotz
DOI: 10.1007/bf00553329
发表时间: 1986-09
影响因子: 4.5
作者:
K. W. Chau;Y. Yang;P. Geil
通讯作者: K. W. Chau;Y. Yang;P. Geil
DOI: 10.1002/apmc.1974.050390115
发表时间: 1974-10
期刊: Angewandte Makromolekulare Chemie
影响因子: --
作者:
Von Günther Goldbach
通讯作者: Von Günther Goldbach