Functional shape memory composite nanofibers with graphene oxide filler |
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| Affiliation: | 1. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, China;2. PolyU Shenzhen Base, Nanshan District, Shenzhen, China;1. Science and Technology on Advanced Composites in Special Environments Laboratory, Harbin Institute of Technology, Harbin 150080, China;2. Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), Harbin 150080, China;1. Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, China;2. Centre for Composite Materials and Structures, Science Park of Harbin Institute of Technology (HIT), P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, China;1. School of Chemical and Environment Engineering, North University of China, Taiyuan 030051, People’s Republic of China;2. School of Science, North University of China, Taiyuan 030051, People’s Republic of China;1. Science and Technology on Advanced Composites in Special Environments Laboratory, Harbin Institute of Technology, Harbin 150080, China;2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;3. Composite Material Research Laboratory, Department of Mechanical Engineering, University of New Orleans, LA 70148, USA;1. Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore, Singapore;2. Centre for Nanofibers and Nanotechnology, Mechanical Engineering, National University of Singapore, 2 Engineering Drive 3, Singapore, Singapore;3. Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), Jinan University, Guangzhou 510632, China;4. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore, Singapore;5. Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore 168751, Singapore, Singapore;1. Institute of Pure and Applied Science, Marmara University, 34722 Istanbul, Turkey;2. Textile Technology, Technical Education Faculty, Marmara University, 34722 Istanbul, Turkey;3. Textile Technologies, Serik G-S. Sural Vocational School of Higher Education, Akdeniz University, 07500 Antalya, Turkey;4. Textile Engineering, Technology Faculty, Marmara University, 34722 Istanbul, Turkey |
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| Abstract: | In the present study, we prepared a series of graphene oxide (GO) filled shape memory polyurethane (SMPU) nanofibers and systematically investigated the morphological, thermal and mechanical properties, surface wettability, and the shape memory effect (SME) followed by the proposed programming model. The results show that GO can be well dispersed within the SMPU matrix, and the introduction of GO significantly improves the mechanical strength, surface wettability, and thermal stability of the SMPU. Compared with pristine SMPU nanofibrous mats, the prepared SMPU/GO nanofibrous mats have better SME and lower thermal shrinkage. When the loading amount of GO increased to 4.0 wt%, the thermal shrinkage ratio (Rts) of composite nanofibrous mats could be as low as 4.7 ± 0.3%, while the average fixation ratio (Rf) and recovery ratio (Rr) could be as high as 92.1% and 96.5%, respectively. The study indicates that GO is a desirable reinforcing filler for preparing shape memory nanofibers with improved properties. |
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| Keywords: | A Polymer-matrix composites (PMCs) B Mechanical properties E Electrospinning Shape memory nanofibers |
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