Authors: Ning Cai Chao Li Xiaogang Luo Yanan Xue Liang Shen Faquan Yu
Publish Date: 2015/09/08
Volume: 51, Issue: 2, Pages: 797-808
Abstract
This study aims to develop a strategy to promote the mechanical properties of nanofiller/polymer composite nanofibers ie nanofillers was modified with hyperbranched polyglycerol PG by ringopening polymerization of glycidol The accomplishment of grafting of PG on ND nanofiller surface was confirmed by transmission electron microscopy TEM Fourier transform infrared spectroscopy FTIR and thermo gravimetric analysis TGA FITR and differential scanning calorimetry DSC results revealed the enhanced filler–PVA interactions following PG functionalization The improved dispersivity of PGfunctionalized NDs NDPGs in water and PVA matrix was verified by sedimentation tests and TEM respectively The grafting of PG on ND surface increased the tensile strength up to 60 Young’s modulus up to 51 and toughness up to 59 for 3 wt ND/PVA composite nanofiber membranes Therefore the enhanced mechanical performance of NDPG/PVA nanocomposites can be attributed to the enriched hydroxyl groups of PG which improved the dispersion of nanofillers within composite matrix and strengthened filler–matrix interactionsThis research was supported by the National Natural Science Foundation of China 21571147 21206143 Innovative Team Incubation Program in HighTech Industry of Wuhan City 2014070504020244 Innovative Team Program of the Natural Science Foundation of Hubei Province 2014CFA011 Natural Science Foundation of Hubei Province 2015CFB430 Open Fund of Key Laboratory for Green Chemical Process of Ministry of Education GCP201405 and Graduate Innovative Fund of Wuhan Institute of Technology CX2014009
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