Volume 301, Issue 6 pp. 743-749
Full Paper

Fabrication of Polymer Film with Extraordinary Conductive Anisotropy by Forming Parallel Conductive Vorticity-Aligned Stripes and Its Formation Mechanism

Jinrui Huang

Corresponding Author

Jinrui Huang

Key Laboratory of Biomass Energy and Material, Jiangsu Province, Key and Open Laboratory on Forest Chemical Engineering, State Forestry Administration, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042 Jiangsu Province, P. R. China

E-mail: [email protected], [email protected]Search for more papers by this author
Junbao Xu

Junbao Xu

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China

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Yuping Sheng

Yuping Sheng

Analytical and Testing Center, Sichuan University of Science and Engineering, Zigong, 643000 P. R. China

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Yutian Zhu

Corresponding Author

Yutian Zhu

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China

E-mail: [email protected], [email protected]Search for more papers by this author
Wei Jiang

Wei Jiang

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China

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Donghua Xu

Donghua Xu

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China

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Qingxin Tang

Qingxin Tang

Key Laboratory of UV Light Emitting Materials and Technology under Ministry of Education, Northeast Normal University, Changchun, 130024 P. R. China

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Xiaoan Nie

Xiaoan Nie

Key Laboratory of Biomass Energy and Material, Jiangsu Province, Key and Open Laboratory on Forest Chemical Engineering, State Forestry Administration, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042 Jiangsu Province, P. R. China

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First published: 13 April 2016
Citations: 26

Abstract

In this work, anisotropic conductive film (ACF) is fabricated by shear-flow induced assembly. It is found that an appropriate content of carbonaceous filler is needed for forming well-ordered parallel vorticity-aligned stripes and the content depends on the category of the filler. Interestingly, the lowest aspect ratio carbon black (CB) with lowest electrical conductivity is the best candidate for fabricating ACF. The film with CB stripes shows excellent conductive anisotropy: the electrical resistivity in the direction parallel to the CB stripes is almost eight orders of magnitude lower than that in the perpendicular direction. The formation mechanism of the vorticity-aligned stripe is also investigated by the rheological measurement and the study of morphological evolution. It is found that the coalescence of dispersed phase or aggregates dominates the formation and growth of the stripe and negative value of the first normal stress difference drives the stripe to align along the vorticity direction.

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