title: Interfacial Microstructure and Enhanced Mechanical Properties of Carbon Fiber Composites Caused by Growing Generation 1-4 Dendritic Poly(amidoamine) on a Fiber Surface.
abstract: In an attempt to improve the mechanical properties of carbon fiber composites, propagation of poly(amidoamine) (PAMAM) dendrimers by in situ polymerization on a carbon fiber surface was performed. During polymerization processes, PAMAM was grafted on carbon fiber by repeated Michael addition and amidation reactions. The changes in surface microstructure and the chemical composition of carbon fibers before and after modification were investigated by atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. All the results indicated that PAMAM was successfully grown on the carbon fiber surface. Such propagation could significantly increase the surface roughness and introduce sufficient polar groups onto the carbon fiber surface, enhancing the surface wettability of carbon fiber. The fractured surface of carbon fiber-reinforced composites showed a great enhancement of interfacial adhesion. Compared with those of desized fiber composites, the interlaminar shear strength and interfacial shear strength of PAMAM/fiber-reinforced composites showed increases of 55.49 and 110.94%, respectively.
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Bo
authors.initials: B
authors.lastname: Gao
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.|Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University , 250061 Jinan, People's Republic of China.
authors.forename: Ruliang
authors.initials: R
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Fucheng
authors.initials: F
authors.lastname: Gao
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Maoshuai
authors.initials: M
authors.lastname: He
authors.affiliation: Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University , 250061 Jinan, People's Republic of China.
authors.forename: Chengguo
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Lifen
authors.initials: L
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, Shandong University of Science and Technology , 266590 Qingdao, People's Republic of China.
authors.forename: Hongzhi
authors.initials: H
authors.lastname: Cui