Investigation of Morphology, Crystallinity, Thermal stability, Piezoelectricity and Conductivity of PVDF nanocomposites reinforced with Epoxy Functionalized MWCNTs

作者: Ayesha Kausar , Irfan Ahmed , Hameed Ullah , Saddiqa Begum , Yiqiang Zhan

DOI: 10.1016/J.COMPSCITECH.2021.108841

关键词:

摘要: Abstract In order to improve the dispersion state of multi-walled carbon nanotubes (MWCNTs) and get a synergistic effect when incorporated in polyvinylidene flouride (PVDF) matrix, were oxidized then grafted with di-glycidyl ether bisphenol-A (DGEBA) by linker moiety, hexamethylene diamine (HMD). Modified MWCNTs (HD-MWCNTs various concentrations 1.0 wt.% 10 fluoride matrix for fabrication polymeric nanocomposites (PVDF/HD-MWCNTs). Compared pristine (P-MWCNTs), structural thermal analysis both modified showed well crystalline structure uniform tubular morphology as improved was achieved their PVDF. Enhanced is attributed strong interfacial interaction polymer chains Therefore, PVDF/HD-MWCNTs melting temperature (Tm) crystallization (Tc) have revealed distribution enhancement heterogeneous nucleating leading formation β-phase which complete agreement SEM, FTIR, XRD, TGA d33 value. Piezoelectric electrical conductivity values measured observed rise increase concentration HD-MWCNTs up 5 where percolation threshold (fc) attained. nanocomposite highest 1.13 x 10-3 Scm-1 at filler loading 5.0 successfully achieved. These simultaneous improvement properties anticipate that can be useful variety energy applications.

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