Volume 136, Issue 32 47842
Article

Investigation of covalently grafted polyacrylate chains onto graphene oxide for epoxy composites with reinforced mechanical performance

Yankun Xie

Yankun Xie

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Weiqu Liu

Corresponding Author

Weiqu Liu

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Correspondence to: W. Liu ([email protected])Search for more papers by this author
Chunhua Liu

Chunhua Liu

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Sha He

Sha He

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Fengyuan Zhang

Fengyuan Zhang

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Hongyi Shi

Hongyi Shi

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Maiping Yang

Maiping Yang

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

University of Chinese Academy of Sciences, Beijing 101408, China

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Zhengfang Wang

Zhengfang Wang

Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China

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First published: 15 April 2019
Citations: 23

ABSTRACT

To enhance the dispersion and interfacial interaction of graphene–epoxy matrix, polyacrylate chains grafted graphene oxide (PA-GO) was manufactured with A-174 functionalized GO (A-GO), methyl acrylate, and glycidyl methacrylate via free-radical random copolymerization technique. Fourier transform infrared, thermogravimetric analysis, X-ray photoelectron spectrum, Raman spectroscopy, X-ray diffraction, transmission electron microscopy, and nuclear magnetic resonance were performed to investigate the structure of A-GO and PA-GO. Then, the PA-GO was incorporated into epoxy resin via in situ solution intercalation dispersion method in order to form an interpenetrating network structure with epoxy resin. Field emission scanning electron microscope results indicate that the PA-GO exhibits excellent dispersion and interfacial compatibility in the epoxy matrix. In compared with pure epoxy, the tensile strength and impact strength of the epoxy composite with 1 wt % PA-GO were shifted from 62.78 ± 2.54 to 70.68 ± 2.02 MPa (about 12.6%) and 3.55 ± 0.41 to 4.98 ± 0.33 kJ m−2 (about 40.3%), respectively. Moreover, increased storage modulus is also observed in the dynamic mechanical analysis measurements compared with that of neat epoxy resin. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47842.

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