title: The effect of interlayer adhesion on the mechanical behaviors of macroscopic graphene oxide papers.
abstract: High mechanical performances of macroscopic graphene oxide (GO) papers are attracting great interest owing to their merits of lightweight and multiple functionalities. However, the loading role of individual nanosheets and its effect on the mechanical properties of the macroscopic GO papers are not yet well understood. Herein, we effectively tailored the interlayer adhesions of the GO papers by introducing small molecules, that is, glutaraldehyde (GA) and water molecules, into the gallery regions. With the help of in situ Raman spectroscopy, we compared the varied load-reinforcing roles of nanosheets, and further predicted the Young's moduli of the GO papers. Systematic mechanical tests have proven that the enhancement of the tensile modulus and strength of the GA-treated GO paper arose from the improved load-bearing capability of the nanosheets. On the basis of Raman and macroscopic mechanical tests, the influences of interlayer adhesions on the fracture mechanisms of the strained GO papers were inferred.
authors.affiliation: National Center for Nanoscience and Technology, China, Beijing 100190, PR China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Gao
authors.forename: Lu-Qi
authors.initials: LQ
authors.lastname: Liu
authors.forename: Sheng-Zhen
authors.initials: SZ
authors.lastname: Zu
authors.forename: Ke
authors.initials: K
authors.lastname: Peng
authors.forename: Ding
authors.initials: D
authors.lastname: Zhou
authors.forename: Bao-Hang
authors.initials: BH
authors.lastname: Han
authors.forename: Zhong
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000268:Adhesiveness; D003460:Crystallization / Q000379:methods*; D055119:Elastic Modulus; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry; D010209:Paper; D010316:Particle Size; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D010087:Oxides; D006108:Graphite