Volume 134, Issue 34 45218
Article

Multifunctional epoxy resin/polyacrylonitrile-lithium trifluoromethanesulfonate composites films with very high transparency, high dielectric permittivity, breakdown strength and mechanical properties

Sheng Sun

Sheng Sun

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

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Longhui Zheng

Longhui Zheng

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

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Li Yuan

Li Yuan

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

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Qingbao Guan

Qingbao Guan

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

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Guozheng Liang

Corresponding Author

Guozheng Liang

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

Correspondence to: A. Gu (E-mail: [email protected]) and G. Liang (E-mail: [email protected])Search for more papers by this author
Aijuan Gu

Corresponding Author

Aijuan Gu

State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Materials Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

Correspondence to: A. Gu (E-mail: [email protected]) and G. Liang (E-mail: [email protected])Search for more papers by this author
First published: 03 May 2017
Citations: 6

ABSTRACT

Multifunctional transparent composite films with high dielectric permittivity (high-k), breakdown strength, and mechanical properties are urgently required by cutting-edge fields. Herein, novel multifunctional films were facilely prepared through building unique cross-linked structure based on epoxy resin (EP) and polyacrylonitrile (PAN)-lithium trifluoromethane sulfonate (LiTf) complex. Compared with high-k materials reported previously, EP/(PAN-LiTf) films simultaneously show very high transparency, good flexibility, high tensile, and breakdown strengths. For 0.22EP/(PAN-LiTf) film with 22 wt % EP, its average transmittance and elongation at break are as high as 91% (600–800 nm) and 12.7%, respectively; moreover, its dielectric permittivity, AC breakdown strength and the maximum energy density are severally about 4.9, 1.8, and 15.2 times of those of EP resin, completely overcoming the sticky problems in conductor/polymer composites. The origin behind these attractive properties is intensively discussed, and believed to be attributed to the unique structure of EP/(PAN-LiTf) films. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45218.

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