Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 90, Issue -, Pages 380-389Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.07.024
Keywords
Nanocomposites; Optical properties; Mechanical properties; Electrospinning
Funding
- Doctoral Student Innovation Fund of Donghua University [CUSF-DH-D-2013043]
- Youth Scientific Research Foundation of Central South University of Forestry and Technology
- Key Project of Science and Technology Commission of Shanghai Municipality [14JC1490100]
- Shanghai Natural Science Foundation [15ZR1400500]
- National Natural Science Foundation of China [31570969, 51073032]
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This study aims to assess the nanofiber directionality effects on optomechanical properties of a widely used transparent thermoplastic poly(methyl methacrylate) (PMMA). Aligned fiber-hybrid mats consisted of nylon-6 (PA-6) nanofibers and PMMA microfibers are prepared using a self-blending co-electrospinning method, followed by hot press molding to fabricate into transparent nanocomposites. Effects of nanofiber orientation degree in two orthogonal directions and loading fraction on the optomechanical behavior of the nanocomposites are examined. Optical transmittance differences parallel and perpendicular to the nanofibers' orientation are found to vary in a range of 3.9-5.4% at 589 nm, and strong mechanical anisotropy is observed with the 1% PA-6/PMMA nanocomposites. A maximal of 3% PA-6 nanofiber loading maintains the nanocomposite high transmittance (>75%) with improved strength and toughness along the nanofiber axis. This study reveals evident anisotropic optomechanical properties of transparent nanocomposites, and highlights the great designability of transparent nanocomposites by using aligned nanofibers as the designing elements. (C) 2016 Elsevier Ltd. All rights reserved.
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