arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1607.06004cond-mat.mtrl-sci
收藏

疏水-疏水相互作用在石墨烯直接转移中的应用

Use of Hydrophobic-Hydrophobic Interactions for Direct Graphene Transfer

Runlai Li, Frank Leung-Yuk Lam, Jin Li, Xijun Hu, Ping Gao

摘要:

开发了一种新的大面积湿转移方法,将石墨烯直接转移到UHMWPE膜上,而无需有机涂层、热处理或其他介导基底。该方法通过利用石墨烯和UHMWPE之间的疏水-疏水相互作用完全避免了PMMA残留物和可能的PMMA涂层诱导的撕裂问题,这是目前可用的最简单和最便宜的转移方法之一,特别是对于大面积石墨烯制备和转移。通过重复转移方法也可以容易地制备具有期望层数的石墨烯和UHMWPE的多层夹层结构复合膜。这种转移方法的最重要的应用在于,它有助于通过电子显微镜(例如SEM和TEM)以高放大率直接观察薄聚合物膜。因此,包括UHMWPE在内的聚合物的结晶和相行为可以通过实时和原位形态观察进行研究,即使在其溶剂存在下和需要热处理的情况下也是如此。研究了拉伸后石墨烯/超高分子量聚乙烯(UHMWPE)层状复合膜的形貌和力学性能,观察了石墨烯对单层和双面复合膜的增强作用。

英文摘要:

A new large-area wet transfer method to transfer graphene directly onto UHMWPE membranes without organic-coating, thermal treatment or other mediated substrate was developed. This method completely avoids the problems of PMMA-residue and possible PMMA coating induced tear-off by harnessing hydrophobic-hydrophobic interactions between graphene and UHMWPE, which is one of most facile and cheapest transfer methods that are currently available, especially for large-area graphene preparation and transfer. Multi-layer sandwich structure composite membrane of graphene and UHMWPE with desired number of layers can also be easily prepared by repeating the transfer method. The most significant applications of this transfer method lie on that it facilitates thin polymer membranes the possibilities to be directly observed with high magnification by electron microscopes, such as SEM and TEM. Thus the crystallization and phase-behavior of polymers including UHMWPE can be investigated with real-time and in-situ morphological observations, even in the presence of their solvent and with the need of thermal treatment. Morphologies and mechanical properties of stretched graphene/UHMWPE layered composite membranes were investigated, and strengthening effect of graphene on one side and both sides was observed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑