Electrospun nanofiber reinforced and toughened composites through in situ nano-interface formation
Electrospun nanofiber reinforced and toughened composites through in situ nano-interface formation
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DOI：
10.1016/j.compscitech.2008.08.033
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发表时间：
2008-12-01
影响因子：
9.1
通讯作者：
Deng, Xuliang
中科院分区：
文献类型：
--
作者：
Lin, Song;Cai, Qing;Deng, Xuliang
通过静电纺丝聚合物共混物制备PAN核-PMMA壳纳米纤维织物，以增强牙科树脂体系2,2双-[4-(甲基丙烯酰氧基丙氧基)-苯基]-丙烷(Bis-GMA)。通过扫描电子显微镜（SEM）和透射电子显微镜/能量色散光谱（TEM/EDS）观察证实了PAN-PMMA纳米纤维的核壳结构。研究了PAN-PMMA纳米纤维增强Bis-GMA复合材料的弯曲性能和动态力学性能。结果表明PMMA壳与Bis-GMA树脂部分溶解。光聚合后，线性PMMA链与牙科树脂网络相互渗透并缠结，从而在壳结构中形成原位纳米界面。通过这种纳米界面的形成，PAN-PMMA 纳米纤维增强 Bis-GMA 复合材料的机械性能得到了改善。 (C) 2008 Elsevier Ltd. 保留所有权利。
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. (C) 2008 Elsevier Ltd. All rights reserved.