Advanced Carbon Products and Metrology Section, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K.S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific Innovation and Research (AcSIR), NPL, New Delhi, India.
Department of Aeronautics and Astronautics, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
J Colloid Interface Sci. 2019 Jan 1;533:548-560. doi: 10.1016/j.jcis.2018.08.105. Epub 2018 Aug 29.
Various efforts are going on to improve the electrical properties of carbon fiber reinforced polymer (CFRP) composites. Conducting polymer is one the promising material to achieve the desired electrical properties of CFRP composites without compromising the mechanical properties as a lighting sticking material.
In present study, in addition to conducting polymer polyaniline (PANI), another conducting phase reduced graphene oxide (RGO) was incorporated in PANI based system. The RGO was synthesized and incorporated in different weight (0-0.5 wt%) fraction in dodecylbenzenesulfonic acid (DBSA) doped PANI-divinylbenzene (DVB) polymer to get PANI-DBSA/DVB nanocomposite. The mechanical and interfacial interaction was analyzed by universal testing machine (UTM) and transmitted electron microscopy (TEM).
The addition of optimum 0.3 wt% RGO improved flexural strength and modulus of PANI-DSBA/RGO-DVB composite by 153% and 32% respectively over neat PANI-DBSA/DVB nanocomposite. The maximum electrical conductivity 0.301 S/cm, glass transition temperature (T) and thermal stability of nanocomposite realized at 0.3 wt% of RGO. Raman spectroscopy and HRTEM confirmed the improvement of interfacial bonding by H-bonding and π-π interaction. For the 1st time we are reporting RGO utilisation for the improvement of thermomechanical and electrical interfacial properties of PANI-DBSA/DVB nanocomposite for the structural applications.
为了改善碳纤维增强聚合物（CFRP）复合材料的电学性能，人们正在进行各种努力。导电聚合物是一种很有前途的材料，可以在不影响机械性能的情况下实现 CFRP 复合材料所需的电性能，作为一种照明棒材料。
在本研究中，除了导电聚合物聚苯胺（PANI）之外，还将另一种导电相还原氧化石墨烯（RGO）掺入到基于 PANI 的体系中。合成了 RGO，并以不同的重量（0-0.5wt%）分数掺入十二烷基苯磺酸（DBSA）掺杂的 PANI-二乙烯基苯（DVB）聚合物中，得到 PANI-DBSA/DVB 纳米复合材料。通过万能试验机（UTM）和透射电子显微镜（TEM）分析了力学和界面相互作用。
最佳 0.3wt%RGO 的加入使 PANI-DSBA/RGO-DVB 复合材料的弯曲强度和模量分别提高了 153%和 32%，超过了纯 PANI-DBSA/DVB 纳米复合材料。纳米复合材料的最大电导率为 0.301S/cm、玻璃化转变温度（T）和热稳定性在 0.3wt%的 RGO 时达到。拉曼光谱和 HRTEM 证实了通过氢键和π-π相互作用改善了界面结合。我们首次报道了 RGO 的利用，以提高 PANI-DBSA/DVB 纳米复合材料的热机械和电界面性能，用于结构应用。
