首页 | 本学科首页   官方微博 | 高级检索  
     


In situ thermal reduction of graphene oxide in a styrene–ethylene/butylene–styrene triblock copolymer via melt blending
Authors:Feng You  Dongrui Wang  Jianping Cao  Xinxin Li  Zhi‐Min Dang  Guo‐Hua Hu
Affiliation:1. Department of Polymer Science and Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, , Beijing, 100083 China;2. CNRS‐Université de Lorraine, Laboratoire Réactions et Génie des Procédés, UPR3349, , Nancy, F‐54000 France
Abstract:We report an in situ thermal reduction of graphene oxide (GO) in a styrene–ethylene/butylene–styrene (SEBS) triblock copolymer matrix during a melt‐blending process. A relatively high degree of reduction was achieved by melt‐blending premixed GO/SEBS nanocomposites in a Haake mixer for 25 min at 225 °C. Infrared spectral results revealed the successful thermal reduction of, and the strong adsorption of SEBS on, the graphene sheets. The glass transition temperature of polystyrene (PS) segments in SEBS was enhanced by the incorporation of thermally reduced graphene oxide (TRGO). The resultant TRGO/SEBS nanocomposites were used as a masterbatch to improve the mechanical properties of PS. Both the elongation at break and the flexural strength of PS/SEBS blends were enhanced with the addition of the TRGO. Our demonstration of the in situ thermal reduction of GO via melt blending is a simple, efficient strategy for preparing nanocomposites with well‐dispersed TRGO in the polymer matrix, which could be an important route for large‐scale fabrication of high‐performance graphene/polymer nanocomposites. © 2013 Society of Chemical Industry
Keywords:graphene  thermal reduction  melt blending  SEBS  copolymer  nanocomposite
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号