Advertisements

Designing a multi-functionalized clay lamellar-co-graphene oxide nanosheet system: An inventive approach to enhance mechanical characteristics of the corresponding epoxy-based nanocomposite coating

Clay nano-platelets (NC) and Graphene oxide nanosheets (GO) are functionalized by the aid of 1,4- butanediol diglycidyl ether (BDDE) through an aminosilane coupling agent, i.e. 3-Triethoxysilyl propylamine (APTES). The products obtained from the modification process are characterized by visual assessment, FTIR, XRD, TGA, UV–vis, AFM and FE-SEM analyses. The results clearly demonstrate the epoxide ring of BDDE is chemically attached on the surface of the fillers. Furthermore, the process is causing the stacks of layers expand and d-spacing increases. The functionalized NC and GO, i.e. MNC and MGO, are then impregnated into an undiluted clear di-functional bisphenol A/epichlorohydrin derived liquid epoxy resin at 0.3% weight concentration by simple mechanical mixing. The films are also morphologically studied by FE-SEM. Dynamic and static mechanical properties are investigated by DMA and tensile testing. The outcomes demonstrate that there exists an optimum mixing ratio of MGO and MNC to obtain the best mechanical properties, i.e. MGN (70:30). Besides, almost all the modified samples show improved mechanical properties compared to their unmodified counterparts.

Explore further

Volume 116, March 2018, Pages 7–20

Advertisements

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

SUBSCRIBE TO OUR NEWSLETTER

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

Paints and Coatings Expert will use the information you provide on this form to be in touch with you and to provide updates and marketing.
%d bloggers like this: