Volume 131, Issue 2
Research Article

Preparation and properties of dopamine reduced graphene oxide and its composites of epoxy

Xinli Hu

Xinli Hu

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Rongrong Qi

Corresponding Author

Rongrong Qi

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

Correspondence to: R. R. Qi (E-mail: [email protected])Search for more papers by this author
Jian Zhu

Jian Zhu

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Jiaqi Lu

Jiaqi Lu

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Yu Luo

Yu Luo

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Jieyu Jin

Jieyu Jin

School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Pingkai Jiang

Pingkai Jiang

Shanghai Key Lab of Electrical Insulation and Thermal Aging, Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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First published: 07 August 2013
Citations: 53

ABSTRACT

To improve the thermal and mechanical properties and further to expand its applications of epoxy in electronic packaging, reduced graphene oxide/epoxy composites have been successfully prepared, in which dopamine (DA) was used as reducing agent and modifier for graphene oxide (GO) to avoid the environmentally harmful reducing agents and address the problem of aggregation of graphene in composites. Further studies revealed that DA could effectively eliminate the labile oxygen functionality of GO and generate polydopamine functionalized graphene oxide (PDA-GO) because DA would be oxidated and undergo the rearrangement and intermolecular cross-linking reaction to produce polydopamine (PDA), which would improve the interfacial adhesion between GO and epoxy, and further be beneficial for the homogenous dispersion of GO in epoxy matrix. The effect of PDA-GO on the thermal and mechanical properties of PDA-GO/epoxy composites was also investigated, and the incorporation of PDA-GO could increase the thermal conductivity, storage modulus, glass transition (Tg), and dielectric constant of epoxy. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39754.

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