FACILE REGULATION OF GLUTARALDEHYDE-MODIFIED GRAPHENE OXIDE FOR PREPARING FREE-STANDING PAPERS AND NANOCOMPOSITE FILMS  

作　　者：Ye-qiang Tan 宋义虎 郑强 

机构地区：[1]MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University

出　　处：《Chinese Journal of Polymer Science》2013年第3期399-406,共8页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.51073136);the Zhejiang Innovation Program for Graduates

摘　　要：Colloidal suspensions of glutaraldehyde （GA） crosslinked or grafted graphene oxide （GO） sheets were fabricated by simply tailoring the feed sequence. The different structures were confirmed by Fourier transform infrared spectra and X-ray diffraction. As demonstration of the utilities, the different colloidal suspensions were used to prepare free-standing papers by flow-directed filtration and poly（vinyl alcohol） （PVA）-based nanocomposite films by casting. Free-standing papers from GA crosslinked GO sheets exhibited better mechanical properties than unmodified GO paper, while nanocomposite films from GA grafted GO exhibit higher tensile strength and Young＇s modulus.Colloidal suspensions of glutaraldehyde （GA） crosslinked or grafted graphene oxide （GO） sheets were fabricated by simply tailoring the feed sequence. The different structures were confirmed by Fourier transform infrared spectra and X-ray diffraction. As demonstration of the utilities, the different colloidal suspensions were used to prepare free-standing papers by flow-directed filtration and poly（vinyl alcohol） （PVA）-based nanocomposite films by casting. Free-standing papers from GA crosslinked GO sheets exhibited better mechanical properties than unmodified GO paper, while nanocomposite films from GA grafted GO exhibit higher tensile strength and Young＇s modulus.

关 键 词：Graphene oxide paper GLUTARALDEHYDE Mechanical properties Nanocomposites Crystallization behavior. 

分 类 号：O613.71[理学—无机化学] TB383.2[理学—化学]