Electrospun nanofiber reinforced and toughened composites through in situ nano-interface formation

• Published in: Composites science and technology 2008-12, Vol.68 (15), p.3322-3329
• Main Authors: Lin, Song, Cai, Qing, Ji, Jianying, Sui, Gang, Yu, Yunhua, Yang, Xiaoping, Ma, Qi, Wei, Yan, Deng, Xuliang
• Format: Article
• Language: English
• Subjects: A Fiber; A Nano-composite; Applied sciences; B Interface; Biological and medical sciences; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Medical sciences; Polymer industry, paints, wood; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Technology of polymers; Technology. Biomaterials. Equipments
• ISSN: 0266-3538; 1879-1050
• DOI: 10.1016/j.compscitech.2008.08.033

PAN core–PMMA shell nanofiber fabric was prepared by electrospinning of polymer blends to reinforce 2,2-bis-[4-(methacryloxypropoxy)-phenyl]-propane (Bis-GMA) a dental resin system. The core–shell structure of the PAN–PMMA nanofiber was confirmed by scanning electron microscopy (SEM) and transmission electron microscope/energy dispersive spectroscopy (TEM/EDS) observation. The flexural properties and dynamic mechanical properties of the PAN–PMMA nanofiber reinforced Bis-GMA composites were studied. Results showed that PMMA shell was partly dissolved with the Bis-GMA resin. After photopolymerization, liner PMMA chains interpenetrated and entangled with the dental resin network, which resulted in an in situ nano-interface in the shell structure. Improvement of the mechanical properties of the PAN–PMMA nanofiber reinforced Bis-GMA composites has been achieved through this nano-interface formation.