Kim, Gwang Ho Lee, Ji Seok Koo, Chong Min Hong, Soon Man 2024-01-20T21:04:58Z 2024-01-20T21:04:58Z 2021-09-03 2009-07 0927-6440 https://pubs.kist.re.kr/handle/201004/132374 We investigated the interrelationships among the crystal structures and the physical/ferroelectric/piezoelectric/rheological properties of a thermoplastic composite based on poly(vinylidene fluoride) (PVDF)/carbon nano tube (CNT). The composite was prepared by solution blending and the composite films were formed by hot-pressing. The contents of CNT were from 0.001 wt% to 3 wt%. To induce piezoelectric beta-form crystal structure, the composite films were drawn by 400% elongation. The samples were poled at high voltage and high temperature for polarization of the film. The beta-forrn crystal increased with CNT contents, passing through a peak, and decreased. The structural changes depended on the CNT contents, drawing and poling conditions. The maximum amount of beta-crystal could be produced by optimum conditions in this study. The drawn and poled PVDF/CNT (0.2 wt%) composite film had the highest value of piezoelectricity. In the rheological properties, dynamic viscosity, the extent of shear thinning behaviors and relaxation time were increased with the CNT content. (C) Koninklijke Brill NV, Leiden, 2009 English TAYLOR & FRANCIS LTD PYROELECTRICITY DEPENDENCE BEHAVIOR Preparation and Characterization of Thermoplastic Composite Based on Poly(vinylidene fluoride) and Multiwalled Carbon Nanotube Article 10.1163/156855409X450918 1 COMPOSITE INTERFACES, v.16, no.4-6, pp.507 - 518 COMPOSITE INTERFACES 16 4-6 507 518 scie scopus 000268957700019 2-s2.0-71649099419 Materials Science, Composites Materials Science Article; Proceedings Paper PYROELECTRICITY DEPENDENCE BEHAVIOR Thermoplastic composite poly(vinylidene fluoride) carbon nano tube piezoelectric properties