Superior Reinforcement in Melt-Spun Polyethylene/Multiwalled Carbon Nanotube Fiber through Formation of a Shish-Kebab Structure

被引:72
作者
Mai, Fang [1 ]
Wang, Ke [1 ]
Yao, Meijun [1 ]
Deng, Hua [1 ]
Chen, Feng [1 ]
Fu, Qiang [1 ]
机构
[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China
基金
中国国家自然科学基金;
关键词
INJECTION-MOLDED BARS; ELECTRICAL-CONDUCTIVITY; DENSITY POLYETHYLENE; POLYMER COMPOSITES; HIGH-STRENGTH; CRYSTALLIZATION; NANOCOMPOSITES; NUCLEATION; NANOFILLERS; PERCOLATION;
D O I
10.1021/jp1019944
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The formation of a shish kebab (SK) structure, where carbon nanotubes (CNTs) serve as shish and polymer lamellae serve as kebab, is particularly interesting and provides a novel way to enhance the polymer-CNT interface. A fine SK structure is achieved through melt spinning. High density polyethylene and pristine CNTs were first compounded in an extruder. The compound was then spun into fibers with different draw ratios with the aid of a capillary rheometer. The crystalline structure and mechanical behavior were characterized by scanning electron microscopy, differential scanning calorimetry, two-dimensional wide-angle X-ray scattering, polarized Raman spectroscopy, and tensile testing. An increase in tensile strength as high as 3 times has been achieved in the fiber. The formation of SKs is considered as the main mechanism responsible for the enhanced interfacial interaction and excellent tensile property.
引用
收藏
页码:10693 / 10702
页数:10
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