title: Graphene oxide reinforced polyimide nanocomposites via in situ polymerization.
abstract: Graphene oxide (GO) reinforced polyimide nanocomposites were synthesized by in situ polymerization of monomers in the presence of GO sheets dispersed in N,N-Dimethylacetamide (DMAc). The functional groups (e.g., hydroxyl, epoxide, and carboxyl groups) associated with the GO make GO excellent dispersion in the organic solvent, which benefits the subsequent in situ polymerization. This process enabled uniform dispersion of GO sheets in the polymer matrix. The resultant GO-polyimide nanocomposite films were studied by tensile test, TGA and SEM. The results showed that the GO sheets incorporated in the polymer matrix exhibited a layer-aligned structure without destruction of the thermal stability of the polymer matrix, and a loading of GO (10 wt%) resulted in a significant enhancement in elastic modulus (86.4%).
authors.affiliation: Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, PR China.
authors.forename: Nantao
authors.initials: N
authors.lastname: Hu
authors.forename: Liangming
authors.initials: L
authors.lastname: Wei
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Wang
authors.forename: Rungang
authors.initials: R
authors.lastname: Gao
authors.forename: Jing
authors.initials: J
authors.lastname: Chai
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.forename: Eric Siu-Wai
authors.initials: ES
authors.lastname: Kong
authors.forename: Yafei
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D055119:Elastic Modulus; D006108:Graphite / Q000737:chemistry*; D007094:Imides / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D013499:Surface Properties
chemical_list: D007094:Imides; D046911:Macromolecular Substances; D010087:Oxides; D006108:Graphite