Improved dispersion of carbon nanotubes in poly(vinylidene fluoride) composites by hybrids with core–shell structure |
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| Authors: | Benhui Fan Xiaoxin Lu Zhimin Dang Yuan Deng Xiying Zhou Delong He Jinbo Bai |
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| Affiliation: | 1. Laboratoire Mécanique des Sols, Structures et Matériaux (MSSMat), CNRS UMR 8579, Ecole CentraleSupelec, Université Paris Saclay, Chatenay‐Malabry, France;2. State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;3. Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Materials Science and Engineering, Beihang University, Beijing 100191, China;4. Shanghai University of Engineering Science, Shanghai 201620, China |
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| Abstract: | Core–shell structure hybrids of carbon nanotubes (CNTs)/BaTiO3 (H‐CNT‐BT) and commercial multi‐wall CNTs are respectively incorporated into poly(vinylidene fluoride) (PVDF) for preparing the composites near the percolation thresholds. A comprehensive investigation for CNT's dispersion and composite's conductivity is conducted between H‐CNT‐BT/PVDF and CNT/PVDF at different depths vertical to the injection's direction. Gradual increases of the conductivity in two composites are observed from the out‐layer to the core part which infers an inhomogeneous CNT's dispersion in the interior of composites due to their migration under flow during the injection. However, the use of H‐CNT‐BT fillers with core–shell structure enables to reduce this inhomogeneous dispersion in the composite. Furthermore, the conductive network of CNTs in H‐CNT‐BT/PVDF is less sensitive to the thermal treatment than the one in CNT/PVDF composite, which infers the core–shell structure of hybrids can ameliorate the sensitivity of the conductive network. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 45693. |
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| Keywords: | graphene and fullerenes nanoparticles nanotubes nanowires and nanocrystals synthesis and processing techniques |
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