Preparation and characterization of CNTs/PE micro‐nanofibers
Preparation and characterization of CNTs/PE micro‐nanofibers
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DOI：
10.1002/pat.1906
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发表时间：
2012-03
影响因子：
3.4
通讯作者：
Hailiang Wang;R. Xiao
中科院分区：
文献类型：
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作者：
Hailiang Wang;R. Xiao
通过熔融挤出与醋酸丁酸纤维素（CAB）不相溶的共混物并随后去除CAB基质，首次制备了CNT含量为0.5至10wt％的多壁碳纳米管（CNT）/聚乙烯微纳米纤维。使用双螺杆挤出机中不同区域收集的样品研究了分散相的形态发展。发现PE中碳纳米管的形态有个体和团聚两种形式。 CNTs/PE纳米纤维的平均直径随着CNTs含量的增加而增加。研究了CNT/PE纳米纤维的电导率，获得了约4%wt的渗滤阈值。此外，对CNT/PE纳米纤维的晶体结构进行了分析，表明随着CNT的添加，结晶度降低。复合原纤维的热性能也得到了改变。本文展示了一种通过原位微纤丝形成制备 CNT/TP 纳米纤维的好方法。版权所有 © 2011 约翰·威利父子有限公司
Multiwalled carbon nanotubes (CNTs)/polyethylene micro‐nanofibers with content ranging from 0.5 to 10 wt% of CNTs were prepared for the first time by melt extrusion of immiscible blends with cellulose acetate butyrate (CAB) and subsequent removal of CAB matrix. The morphology development of dispersed phase was studied with samples collected at different zones in a twin‐screw extruder. The morphology of the CNTs in PE was found to be in forms of both individual and agglomerations. The average diameters of CNTs/PE nanofibers increased with increasing the CNTs content. The electrical conductivity of CNTs/PE nanofibers was studied and a percolation threshold of about 4 wt% was obtained. In addition, the crystalline structures of the CNTs/PE nanofibers were analyzed, indicating a decrease in the crystallinity with the addition of CNTs. The thermal properties of composite fibrils were also modified. This paper demonstrates a good approach for the preparation of CNTs/TP nanofibers byin situmicrofibrillar formation. Copyright © 2011 John Wiley & Sons, Ltd.