Dichlorobenzene: an effective solvent for epoxy/graphene nanocomposites preparation

Wei, Jiacheng, Saharudin, Mohd, Vo, Thuc and Inam, Fawad (2017) Dichlorobenzene: an effective solvent for epoxy/graphene nanocomposites preparation. Royal Society Open Science, 4 (170778). ISSN 2054-5703

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Abstract

It is generally recognized that dimethylformamide (DMF) and ethanol are good media to uniformly disperse graphene, and therefore have been used widely in the preparation of epoxy/graphene nanocomposites. However, as a solvent to disperse graphene, dichlorobenzene (DCB) has not been fully realized by the polymer community. Owing to high values of the dispersion component (δd) of the Hildebrand solubility parameter, DCB is considered as a suitable solvent for homogeneous graphene dispersion. Therefore, epoxy/graphene nanocomposites have been prepared for the first time with DCB as a dispersant; DMF and ethanol have been chosen as the reference. The colloidal stability, mechanical properties, thermogravimetric analysis, dynamic mechanical analysis and scanning electron microscopic images of nanocomposites have been obtained. The results show that with the use of DCB, the tensile strength of graphene has been improved from 64.46 to 69.32 MPa, and its flexural strength has been increased from 97.17 to 104.77 MPa. DCB is found to be more effective than DMF and ethanol for making stable and homogeneous graphene dispersion and composites.

Item Type: Article
Uncontrolled Keywords: epoxy. graphene, nanocomposites, dichlorobenzene, solvent
Subjects: F200 Materials Science
H100 General Engineering
H300 Mechanical Engineering
J400 Polymers and Textiles
J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Fawad Inam
Date Deposited: 12 Oct 2017 09:58
Last Modified: 12 Oct 2017 10:04
URI: http://nrl.northumbria.ac.uk/id/eprint/32320

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