Journal
APPLIED SURFACE SCIENCE
Volume 266, Issue -, Pages 306-312Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2012.12.016
Keywords
PBO fiber; Graphene oxide; Solvothermal method; Surface grafting; Interfacial property
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Funding
- Chang Jiang Scholars Program
- National Natural Science Foundation of China [51073047, 51103031, 51203034, 91016015]
- Research Fund for the Doctoral Program of Higher Education of China [20112302120034]
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An effective approach for grafting graphene oxide (GO) onto poly (phenylene benzobisoxazole) (PBO) fiber surface through ethanediamine as linkage using solvothermal method was proposed. Grafting GO onto the PBO fiber surface was an attempt to improve the interfacial properties between PBO fibers and epoxy matrix. Experimental results reveal that GO was grafted uniformly on the PBO fiber surface through chemical bonds. The polar functional groups and surface energy of PBO fiber were obviously increased after the grafting process. Results of the mechanical property tests show the interfacial shear strength increased obviously and single fiber tensile strength have not any discernable decrease after the grafting process. GO effectively enhanced the interfacial adhesion of PBO fiber-reinforced composite by increasing chemical bonding, improving wettability and mechanical interlocking. (c) 2012 Elsevier B.V. All rights reserved.
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