Functionalized Nanotubes for High Performance Composites

This STTR proposal seeks to investigate the chemical functionalization of single wall carbon nanotubes and their use as reinforcing agents for high performance polymer composites (epoxy and vinyl ester). Rice University has been very successful in research on nanotube functionalization and incorporation into polymer composites. Significant mechanical property improvements have been demonstrated using small amounts of functionalized nanotubes. NanoRidge Materials Inc. intends to transfer these proprietary technologies into large scale commercial applications through further research and development efforts to achieve additional property enhancements with cost effective and scalable processes. The objective of this Proposal is to identify the optimal functionalized nanotube for epoxy and to integrate into epoxy composites for significant mechanical property enhancement. Major technical tasks of Phase I are: (1) develop nanotube functionalization routines to attach functional groups compatible with structural epoxy resins and obtain improved dispersion and bonding in matrix; (2) determine the optimum degree of functionalization such that nanotube mechanical properties are not deteriorated, while nanotubes are maximally utilized as reinforcement. This will involve characterization of the effect of functionalization on the mechanical properties of nanotubes; (3) Develop processing technology to incorporate such functionalized SWNT into epoxy and/or vinyl ester composites and achieve significant mechanical property enhancements. BENEFITS: Successful completion of the Phase I and Phase I Option will provide the technical basis for understanding the degree of functionalization of SWNTs, and the effective influence on mechanical properties of epoxy and vinyl ester resin nanocomposites. Initial process conditions for both the functionalization steps and the subsequent dispersion procedures into the resin will be developed. The technical advancements from Phase I and the anticipated follow-on Phase II efforts will be applicable to a variety of industrial products and systems as well as to the Navy’s interests. Potential commercial applications in such diverse areas as aerospace, industrial (including oil & gas), municipal piping infrastructure, and transportation infrastructure such as bridges and guards, will benefit from the direct translation of this technology into product development efforts.