Enhanced dispersion of multiwall carbon nanotubes in natural rubber latex nanocomposites by surfactants bearing phenyl groups
Enhanced dispersion of multiwall carbon nanotubes in natural rubber latex nanocomposites by surfactants bearing phenyl groups
复制标题
DOI：
10.1016/j.jcis.2015.05.054
复制
发表时间：
2015-10-01
影响因子：
9.9
通讯作者：
Eastoe, Julian
中科院分区：
文献类型：
--
作者：
Mohamed, Azmi;Anas, Argo Khoirul;Eastoe, Julian
本文系统研究了多壁碳纳米管（MWCNTs）在天然胶乳（NR-latex）中的分散性，并辅以一系列含有苯基环部分的单、双和三硫代琥珀酸盐阴离子表面活性剂。通过光学偏光显微镜、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）和拉曼光谱获得了纳米复合材料中MWCNTs的色散谱。有趣的是，含有苯基的三链表面活性剂，即1,5-二氧基-1,5-双（3-苯丙氧基）-3-（（3-苯丙氧基）羰基）戊烷-2-磺酸钠（TCPh），比市售的单链十二烷基苯磺酸钠（SDBS）表面活性剂具有更大的MWCNTs稳定能力。TCPh显著提高了纳米复合材料的导电性，通过四点探针仪器测量，导电性可达10(-2)S cm（-1）。这些结果为表面活性剂结构的设计提供了路线图，这些表面活性剂结构能够为下一代聚合物-碳纳米管材料，特别是用于航空航天技术的聚合物-碳纳米管材料提供均匀分散的MWCNTs。(C) 2015爱思唯尔公司版权所有。
Here is presented a systematic study of the dispersibility of multiwall carbon nanotubes (MWCNTs) in natural rubber latex (NR-latex) assisted by a series of single-, double-, and triple-sulfosuccinate anionic surfactants containing phenyl ring moieties. Optical polarising microscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Raman spectroscopy have been performed to obtain the dispersion-level profiles of the MWCNTs in the nanocomposites. Interestingly, a triple-chain, phenyl-containing surfactant, namely sodium 1,5-dioxo-1,5-bis(3-phenylpropox y)-3-((3-phenylpropoxy)carbonyl) pentane-2-sulfonate (TCPh), has a greater capacity the stabilisation of MWCNTs than a commercially available single-chain sodium dodecylbenzenesulfonate (SDBS) surfactant. TCPh provides significant enhancements in the electrical conductivity of nanocomposites, up to similar to 10(-2) S cm(-1), as measured by a four-point probe instrument. These results have allowed compilation of a road map for the design of surfactant architectures capable of providing the homogeneous dispersion of MWCNTs required for the next generation of polymer-carbon-nanotube materials, specifically those used in aerospace technology. (C) 2015 Elsevier Inc. All rights reserved.