The effect of the ultrasonication pre-treatment of graphene oxide (GO) on the mechanical properties of GO/polyvinyl alcohol composites
The effect of the ultrasonication pre-treatment of graphene oxide (GO) on the mechanical properties of GO/polyvinyl alcohol composites
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DOI：
10.1016/j.carbon.2012.12.071
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发表时间：
2013-04-01
期刊：
影响因子：
10.9
通讯作者：
Liao, Kin
中科院分区：
文献类型：
--
作者：
Li, Yuanqing;Umer, Rehan;Liao, Kin
研究了超声预处理氧化石墨烯（GO）对GO/聚乙烯醇（PVA）复合材料力学性能的影响。结果表明，超声处理时间（或能量输入）对复合材料的力学性能影响较大，存在一个最佳超声处理时间（OUT），使复合材料的力学性能得到最大程度的改善。如果超声波处理时间小于OUT，则GO片没有完全剥落，并且仅实现部分增强效果。超声波处理时间长于OUT会导致GO片尺寸减小并损害机械改进的效率。15 W h/L的超声能量输入可作为制备GO复合材料的一般指导。(C)2013爱思唯尔有限公司保留所有权利。
The effects of ultrasonication pre-treatment of graphene oxide (GO) on the mechanical properties of GO/poly(vinyl alcohol) (PVA) composites were studied. Results show that the mechanical properties are sensitive to ultrasonication time (or energy input) and there is an optimum ultrasonication time (OUT) that leads to the largest improvement in mechanical property. If the ultrasonication time is less than OUT, the GO sheets are not fully exfoliated, and only a partial reinforcement effect is achieved. Ultrasonication times longer than OUT cause a reduction of GO sheet size and impair the efficiency of mechanical improvement. The optimized ultrasonication energy input of 15 W h/L may serve as a general guideline for preparation of GO composites. (C) 2013 Elsevier Ltd. All rights reserved.