文献类型：期刊文献

中文题名：一步法制备蒙脱土-石墨烯协同增强聚乙烯醇复合材料

英文题名：Synergistic Effect of Hybrid Montmorillonite-reduced Graphene Oxide as Dual Filler for Improving the Mechanical Properties of PVA Composites by a One-step Procedure

作者：韩哓芳[1];齐栋栋[1];张玲[1];李春忠[1]

机构：[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

年份：2014

卷号：24

期号：2

起止页码：218

中文期刊名：高分子学报

外文期刊名：Acta Polymerica Sinica

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000332822000006)】；北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家自然科学基金(基金号21322607;21236003;51173043);上海市纳米专项(项目号11nm0500200);教育部新世纪优秀人才计划(项目号NCET-11-0641);上海市基础研究重点项目(项目号13JC1408100);中央高校基本科研业务费专项资金资助项目

语种：中文

中文关键词：聚乙烯醇;蒙脱土-石墨烯;协同效应;力学性能

外文关键词：PVA, MMT-rGO, Synergistic effect, Mechanical properties

摘要：以蒙脱土(MMT)和石墨烯(rGO)为填料,一步法制备了MMT-rGO/PVA纳米复合材料,并研究了不同MMT/rGO比例对PVA复合膜力学性能的影响.结果表明,剥离的MMT片层能够有效阻止石墨烯在被还原过程中的团聚.MMT-rGO二元填料与PVA间形成氢键,极大地改善了填料与聚合物间的界面结合,能够协同提高PVA复合膜的力学性能.1 wt%MMT-GE(2∶1)/PVA复合材料的拉伸强度和杨氏模量最高,分别为85.1 MPa和1627.8 MPa,比纯PVA分别提高了46%和62%.此方法为制备高性能聚合物复合材料提供了有效的途径.
Exfoliated montmorillonite （MMT） and reduced graphene oxide （rGO） hybrids reinforced poly （vinyl alcohol） （PVA） nanocomposites were prepared via a one-step method. The reduction of graphene oxide （GO） was directly performed in the presence of exfoliated MMT sheets, which effectively prevented the restack of graphene sheets in PVA aqueous solution. The results showed that the interracial interaction between MMT-rGO hybrids and PVA matrix can be significantly improved by hydrogen bonds. The incorporation of MMT-rGO hybrids into PVA resulted in greatly enhanced tensile properties due to the well dispersion and strong interracial interaction, which were higher than those of PVA nanocomposites with MMT or rGO individually. The influence of the ratio between MMT and rGO was also investigated. The tensile strength and Young s modulus of the 1 wt% MMT-rGO （2：1 ）/PVA composites are 85.1 MPa and 1627.8 MPa, respectively, which increased by 46% and 62% compared to those of pure PVA films. The method developed in this study makes an effective way to fabricate hybrid reinforcements for the preparation of high-performance polymer composites.