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J. Korean Ceram. Soc. > Volume 59(2); 2022 > Article
Journal of the Korean Ceramic Society 2022;59(2): 202-207.
doi: https://doi.org/10.1007/s43207-021-00174-w
Anionic surface modification of titanium carbide nanoparticles and enhancements in their dispersibility and rheological behavior in aqueous solution
Jinuk Choi1, Gye Seok An2
1Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
2Department of Advanced Materials Engineering , Kyonggi University , 154–42 Gwanggyosan-ro , Suwon   16227 , Republic of Korea
Correspondence  Gye Seok An ,Email: gsmaroan@kyonggi.ac.kr
Received: July 30, 2021; Revised: October 18, 2021   Accepted: December 6, 2021.  Published online: March 31, 2022.
Titanium carbide has attracted considerable attention for the development of ultrahigh-temperature ceramics and electromagnetic interference-shielding applications. Titanium carbide is widely used in a colloid state in the sintering or synthesis to improve the sinterability and homogeneity. However, titanium carbide particles in an aqueous solution are aggregated because of their low dispersibility. To enhance the dispersibility of the particles in an aqueous solution, anionic surface modification and anionic dispersant were used in this study. A polyacrylic acid anionic treatment modified the particles by forming hydroxyl and carboxyl groups on their surfaces. Ammonium polymethacrylate, an anionic dispersant, was added to the suspension to improve the electrostatic force of the particles. The dispersibility and viscosity of the suspension were changed with the variation in the polyacrylic acid content and addition of ammonium polymethacrylate.
Key words: Titanium carbide  · Suspension  · Polyacrylic acid  · Ammonium polymethacrylate  · Dispersibility
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