Functionalization of carbon nanotubes for fabrication of CNT/epoxy nanocomposites
Functionalization of carbon nanotubes for fabrication of CNT/epoxy nanocomposites
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DOI：
10.1016/j.matdes.2016.01.077
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发表时间：
2016-04-05
影响因子：
8.4
通讯作者：
Hong, Soon Hyung
中科院分区：
文献类型：
--
作者：
Cha, Jaemin;Jin, Sunghwan;Hong, Soon Hyung
为了改善碳纳米管(CNTs)在环氧基复合材料中的分散性，采用非共价官能化方法在碳纳米管表面修饰了聚苯乙烯磺酸(PSS)和聚4-氨基苯乙烯(PAS)。在PAS的情况下，氨基也可以与环氧基中的环氧基产生化学键。然后用PSS和PAS制备了非共价官能化的碳纳米管，得到了力学性能提高的碳纳米管/环氧碳纳米复合材料。将非共价官能化的碳纳米管引入改性双酚-A型环氧树脂中，当PAS-CNTs的加入量为1wt.%时，其杨氏模量为3.89 GPA，拉伸强度为82.59 Mpa。碳纳米管的非共价官能化可以有效地改善复合材料的力学性能，这是因为碳纳米管的分散性增强，与环氧基的亲和力很强。(C)2016爱思唯尔有限公司。保留所有权利。
To improve the dispersion of carbon nanotubes (CNTs) in epoxy matrix composites, polystyrene sulfonate (PSS) and poly(4-aminostyrene) (PAS) were attached on the surface of CNTs by noncovalent functionalization. In the case of PAS, amino groups can also generate chemical bonding with the epoxide groups in the epoxy matrix. CNTs noncovalently functionalized with PSS and PAS were then fabricated to obtain CNT/Epoxy nanocomposites with enhanced mechanical properties. The incorporation of noncovalently functionalized CNTs into the modified bisphenol-A type epoxy matrix yielded Young's modulus of 3.89 GPa and tensile strength of 82.59 MPa with the addition of 1 wt.% PAS-CNTs. The noncovalent functionalization of CNTs was effective in improving the composite's mechanical properties due to their enhanced dispersion and strong affinity with the epoxy matrix. (C) 2016 Elsevier Ltd. All rights reserved.