Carbon nanotube grafted silica fibres: Characterising the interface at the single fibre level

被引:90
作者
Qian, Hui [1 ,2 ]
Bismarck, Alexander [2 ]
Greenhalgh, Emile S. [3 ]
Shaffer, Milo S. P. [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, PaCE Grp, London SW7 2AZ, England
[3] Univ London Imperial Coll Sci Technol & Med, Composites Ctr, London SW7 2AZ, England
关键词
Carbon nanotubes; Hybrid composites; Fragmentation; Interfacial strength; Chemical vapour deposition (CVD); COMPOSITES; SURFACE; REINFORCEMENT; STRENGTH; GROWTH; LENGTH;
D O I
10.1016/j.compscitech.2009.11.014
中图分类号
TB33 [复合材料];
学科分类号
摘要
Model polymer composites containing carbon nanotube (CNT) grafted fibres provide a means to investigate the influence of nanostructures on interfacial properties. Well-aligned nanotubes, with controllable length, were grown on silica fibres by using the injection chemical vapour deposition method, leading to a significant increase of the fibre surface area. In single fibre tensile tests, this CNT growth reaction reduced the fibre strength, apparently due to catalyst etching; however, the fibre modulus increased significantly. Contact angle measurements, using the drop-on-fibre method, indicated an excellent wettability of the CNT-grafted fibres by poly(methyl methacrylate) (PMMA). PMMA model composites were fabricated and studied using the single fibre fragmentation tests. A dramatic improvement (up to 150%) of the apparent interfacial shear strength (IFSS) was obtained for the composites containing CNT-grafted fibres. The improvement of IFSS was also influenced by the length and morphology of the grafted CNTs. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:393 / 399
页数:7
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