Facile preparation, characterization and performance of noncovalently functionalized graphene/epoxy nanocomposites with poly(sodium 4-styrenesulfonate)
Facile preparation, characterization and performance of noncovalently functionalized graphene/epoxy nanocomposites with poly(sodium 4-styrenesulfonate)
复制标题
聚（4-苯乙烯磺酸钠）非共价功能化石墨烯/环氧纳米复合材料的简便制备、表征和性能
DOI：
10.1016/j.compositesa.2014.09.016
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发表时间：
2015-01-01
影响因子：
8.7
通讯作者：
Belfiore, Laurence A.
中科院分区：
文献类型：
--
作者：
Li, Yuchao;Tang, Jianguo;Belfiore, Laurence A.
将石墨烯与聚4-苯乙烯磺酸钠（PSS）进行非共价官能团化，然后通过原位聚合成功地将其结合到环氧树脂中，形成功能和结构的纳米复合材料。利用透射电镜、x射线光电子能谱和傅里叶变换红外光谱对PSS改性石墨烯（PSS-g）的形貌和结构进行了表征。研究了PSS-g对环氧/石墨烯纳米复合材料拉伸、电学和热性能的影响。非共价功能化改善了环氧基体和石墨烯之间的界面键合，从而提高了所得纳米复合材料的抗拉强度和模量。PSS-g的添加也增强了环氧/PSS-g纳米复合材料的电学性能，导致较低的渗透阈值为1.2 wt%。热重和差示扫描量热结果表明，环氧树脂/PSS-g纳米复合材料发生了两步分解过程。(C) 2014 Elsevier Ltd.版权所有。
Graphene was noncovalently functionalized with poly(sodium 4-styrenesulfonate) (PSS) and then successfully incorporated into the epoxy resin via in situ polymerization to form functional and structural nanocomposites. The morphology and structure of PSS modified graphene (PSS-g) were characterized with transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The effects of PSS-g additions on tensile, electrical and thermal properties of the epoxy/graphene nanocomposites were studied. Noncovalent functionalization improved interfacial bonding between the epoxy matrix and graphene, leading to enhanced tensile strength and modulus of resultant nanocomposites. The PSS-g additions also enhanced electrical properties of the epoxy/PSS-g nanocomposites, resulting in a lower percolation threshold of 1.2 wt%. Thermogravimetric and differential scanning calorimetric results showed the occurrence of a two-step decomposition process for the epoxy/PSS-g nanocomposites. (C) 2014 Elsevier Ltd. All rights reserved.