Epoxy functionalized multi-walled carbon nanotubes for improved adhesives
نویسندگان
چکیده
Three different types of epoxy-functionalized multi-walled carbon nanotubes (EpCNTs) were prepared by multiple covalent functionalization methods. The EpCNTs were characterized by thermogravimetric analysis (TGA), infrared spectroscopy (FTIR), and Raman spectroscopy to confirm covalent functionalization. The effect of the different chemistries on the adhesive properties was compared to a neat commercial epoxy (Hexion formulation 4007) using functionalized and unfunctionalized multiwalled carbon nanotubes (MWCNT) at 0.5, 1, 2, 3, 5, and 10 weight %. It was found that a EpCNT at 1 weight % increased the lap shear strength, tested using the American Society for Testing and Materials standard test D1002, by 36 % over the unfilled epoxy formulation and by 27 % over a 1 weight % * Corresponding author. Tel/Fax: 1-617-253-4423. E-mail address: [email protected] (T. M. Swager) *Manuscript Click here to view linked References
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