Modification of surface functionality of multi-walled carbon nanotubes on fracture toughness of basalt fiber-reinforced composites. (15th September 2015)

• Record Type: Journal Article
• Authors: Lee, Seong-Ock; Choi, Seung-Ho; Kwon, Soo Han; Rhee, Kyong-Yop; Park, Soo-Jin
• Is Part Of: Composites. Volume 79(2015)
• Page Start: 47
• Page End: 52
• Publication Date: 2015-09-15
• Subjects: A. Polymer-matrix composites -- B. Fracture toughness -- E. Surface treatments; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2015.03.077
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: In this work, we studied the influence of surface functionality of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties of basalt fiber-reinforced composites. Acid and base values of the MWCNTs were determined by Boehm's titration technique. The surface properties of the MWCNTs were determined FT-IR, and XPS. The mechanical properties of the composites were assessed by measuring the interlaminar shear stress, fracture toughness, fracture energy, and impact strength. The chemical treatments led to a change of the surface characteristics of the MWCNTs and of the mechanical interfacial properties of MWCNTs/basalt fibers/epoxy composites. Especially the acid-treated MWCNTs/basalt fibers/epoxy composites had improved mechanical properties compared to the base-treated and non-treated MWCNTs/basalt fibers/epoxy composites. These results can probably be attributed to the improved interfacial bonding strength resulting from the improved dispersion and interfacial adhesion between the epoxy resin and the MWCNTs.