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题名: Regulation of Physical Networks and Mechanical Properties of Triblock Thermoplastic Elastomer through Introduction of Midblock Similar Crystalline Polymer with Multiblock Architecture
作者: Zhang, QL; Hua, WQ; Ren, AL; Feng, JC
刊名: MACROMOLECULES
出版日期: 2016
卷号: 49, 期号:19, 页码:7379-7386
DOI: 10.1021/acs.macromol.6b01441
通讯作者: Feng, JC (reprint author), Fudan Univ, Dept Macromol Sci, Collaborat Innovat Ctr Polymers & Polymer Composi, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
文章类型: 期刊论文
英文摘要: The physical network structure and mechanical properties of styrene-b(ethylene-co-butylene)-b-styrene (SEBS) were regulated through rational introduction of crystalline olefin multiblock copolymer (OBC). This copolymer comprised alternated crystallizable and amorphous blocks, both of which had similar composition with ethylene-co-butylene (EB) blocks of SEBS. Polarized optical microscope and atom force microscope observations revealed that OBC exhibited distinct crystalline morphologies in blends. On one hand, major OBC chains were macrophase separated with SEBS, generating bulk crystals. On the other hand, small OBC particle crystals with-diameter around 10 nm could be distinguished in the SEBS matrix as well. Considering the unique multiblock architecture of OBC, particle crystals could be regarded as additional physical netpoints to SEBS networks as the corresponding amorphous blocks entangled with continuous EB blocks. Because Of the interesting crystalline behaviors of OBC in the SEBS matrix, the blend exhibited dramatically elevated elongation at break at both room temperature and relatively high temperature without sacrifice of intrinsic elasticity. We believe this work sheds light on comprehending the interaction between triblock elastomers and blended polymers, and it also demonstrates the feasibility, of regulating the apparent properties of triblock copolymers by the blending approach.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000385335800028
ISSN号: 0024-9297
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26614
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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