Chain Microstructure, Crystallization, and Morphology of Olefinic Blocky Copolymers
Chain Microstructure, Crystallization, and Morphology of Olefinic Blocky Copolymers
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烯烃嵌段共聚物的链微观结构、结晶和形态
DOI:
10.1002/macp.201200615
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发表时间:
2013-03
影响因子:
2.5
通讯作者:
Fan, Zhi-Qiang
中科院分区:
文献类型:
--
作者:
Tong, Zai-Zai;Huang, Jie;Zhou, Bing;Xu, Jun-Ting;Fan, Zhi-Qiang
The chain microstructure, crystallization, and morphology of three olefinic blocky copolymers (OBCs) are compared. The weight percentage of the hard block and the octene content in it are calculated from the13C NMR spectra with a two‐site first‐order Markovian model. The lengths of the hard blocks are compared from the melting and crystallization behaviors. The remarkable difference between the crystallinity measured by DSC, and wide‐angle X‐ray diffraction (WAXD) indicates the presence of partially ordered phases. Small angle X‐ray scattering (SAXS) shows that the partially ordered phases in OBC‐A are mainly located at the interface between the crystalline and amorphous phases, but exist as separated microdomains in OBC‐B. As the hard block becomes shorter, there are also more, separated partially ordered phases in OBC‐C. Spherulites are observed in all OBCs by POM and the size of the spherulites decreases in the order: OBC‐A > OBC‐B > OBC‐C. TEM shows that spherulites are poorly developed in a thin film of OBC‐B.
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影响因子:
5.5
作者:
Hsin‐Lung Chen;Shi-Fang Wang;Tsang-Lang Lin
通讯作者:
Hsin‐Lung Chen;Shi-Fang Wang;Tsang-Lang Lin
影响因子:
5.5
作者:
Jin, Jing;Du, Jiang;Han, Charles C.
通讯作者:
Han, Charles C.
影响因子:
5.5
作者:
Di Lorenzo, Maria Laura;Gazzano, Massimo;Righetti, Maria Cristina
通讯作者:
Righetti, Maria Cristina
影响因子:
4.6
作者:
A. Ryan;J. L. Stanford;W. Bras;T. M. Nye
通讯作者:
A. Ryan;J. L. Stanford;W. Bras;T. M. Nye
影响因子:
4.6
作者:
Lee, B;Shin, TJ;Ree, M
通讯作者:
Ree, M