Title: Investigation of the Combined Effect of Purification and Functionalization on the Interfacial Properties of Carbon Nanotube Yarns Using a Post-Fractionated Strip-Block Design of Experiments Approach

Authors: Matthew Wadsworth, Arda Vanli, Changchun Zeng

DOI: 10.33599/nasampe/c.23.0156

Abstract: Carbon nanotube (CNT) yarns are being investigated as next generation reinforcement materials for advanced polymer composites for space applications. Similar to other forms of CNT materials, e.g., powders, sheets, the CNT yarn interfacial properties play a critical role in achieving the nanotubes’ exceptional potential by providing efficient load transfer between the polymer matrix and the nanotubes. CNT yarns contain a variety of surface impurities the removal of which would facilitate interfacial bonding. Surface functionalization is typically conducted to introduce functional groups that would interact with the polymer matrix thereby improving the interfacial properties. In this study supercritical water is used for purification, and surface functionalization is conducted using maleic anhydride dissolved in supercritical carbon dioxide. Both processes are operated in a broad range of conditions. Initial studies suggest that impurity removal (purification) and functionalization have a convoluted effect on the CNT yarn surface properties. To better understand this crucial aspect, we investigate the relationship between purification and functionalization, and their combined effect on the interfacial properties of CNT yarns using a post-fractionated strip-block design of experiments (DOE) screening design. The study will provide insights on the most critical process parameters and their interactions toward the CNT yarn pullout circumference. Furthermore, It will provide guidance to design an efficient process to achieve desired pullout circumference.

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Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000156

Pages: 10

Price: $20.00