Gel spinning of PVA composite fibers with high content of multi-walled carbon nanotubes and graphene oxide hybrids

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Wei, Yizhe^1 ; Lai, Dengpan^1 ; Zou, Liming^1 ; Ling, Xinlong^1 ; Lu, Hongwei^1 ; Xu, Yongjing^1

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North People Road, Shanghai

201620, China^1

关键词: Dispersibilities;    Electrical conductivity;    Electrical conductivity measurements;    Hydrogen bonding interactions;    Melting and crystallization;    Poly (vinyl alcohol) (PVA);    Synergistic effect;    Three orders of magnitude;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012052/pdf
DOI  :  10.1088/1757-899X/87/1/012052

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this report, poly (vinyl alcohol) (PVA) composite fibers with high content of multi-walled carbon nanotubes and graphene oxide (MWCNTs-GO) hybrids were prepared by gel spinning, and were characterized by TGA, DSC, SEM, XL-2 yarn strength tester and electrical conductivity measurement. The total content of MWCNTs-GO hybrids in the PVA composite fibers, which is up to 25 wt%, was confirmed by TGA analysis. The DSC measurement shows that the melting and crystallization peaks decreased after the addition of nano-fillers. This is due to the reason that the motion of PVA chains is completely confined by strong hydrogen bonding interaction between PVA and nano-fillers. After the addtion of GO, the dispersibility of MWCNTs in composite fibers improved slightly. And the tensile strength and Young's modulus increased by 38% and 67%, respectively. This is caused by the increased hydrogen bonding interaction and synergistic effect through hybridization of MWCNTs and GO. More significantly, the electrical conductivity of PVA/MWCNTs/GO composite fibers enhanced by three orders of magnitude with the addition of GO.