Tunable Electrical Conductivity of Carbon-Black-Filled Ternary Polymer Blends by Constructing a Hierarchical Structure

被引：23

作者：

Zhang, Qiyan ^{[1
]}

Zhang, Bo-Yuan ^{[1
]}

Guo, Zhao-Xia ^{[1
]}

Yu, Jian ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China

来源：

POLYMERS | 2017年 / 9卷 / 09期

关键词：

polymer composites; hierarchical structure; electrical conductivity; ternary blends; carbon black; BUTADIENE-STYRENE COPOLYMER; POLYPROPYLENE/POLYSTYRENE BLENDS; MECHANICAL-PROPERTIES; PHASE MORPHOLOGIES; COMPOSITES; PERCOLATION; INTERFACE; NANOTUBES; MANIPULATION; PREDICTION;

D O I：

10.3390/polym9090404

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A type of hierarchical structured composite composed of a minor thermoplastic polyurethane (TPU) phase spreading at the interface of two major phases polyoxymethylene/polyamide copolymer (POM/COPA) and carbon black (CB) particles selectively localized at the TPU/COPA interface of the tri-continuous blends was fabricated by melt compounding. The hierarchical structure was designed according to predictions and verified by a combination of electron microscopy and solvent extraction technique. The hierarchical structured composites show the dramatically decreased percolation threshold, a reduction of 60% compared to those without TPU where CB is selectively distributed in the COPA phase. The effects of CB contents and TPU on the phase morphology of POM/COPA were investigated, showing the occurrence of the POM/COPA phase inversion from a sea-island to a co-continuous structure beyond the percolation threshold of CB in the presence of TPU. The mechanism for the formation of conductive network is construction of CB network at the TPU/COPA interface of tri-continuous POM/COPA/TPU blends and double percolation effect.

引用

页数：11

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