Affiliation:
1. Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering East China University of Science and Technology Shanghai People's Republic of China
2. Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering East China University of Science and Technology Shanghai People's Republic of China
Abstract
AbstractThe development of effective dispersants for nanoparticle suspensions is crucial for enhancing the performance and stability of various functional materials. In this study, we investigated a series of comb‐like block copolymers with well‐defined structures, including both categories of block copolymers and uniformly composed random copolymers, as dispersants for cerium oxide (CeO2) suspensions. Acrylic acid (AA) units were used for anchoring and electrostatic repulsion, while methoxy polyethylene glycol acrylate (MPEGA) units provided additional steric hindrance and solubility. We explored stabilization mechanisms involving polymer topologies, chain lengths, compositions, and molecular interactions from kinetic and thermodynamic perspectives. The results demonstrate significant improvements in dispersion stability with both categories of well‐controlled copolymers, especially with uniformly composed random copolymers due to their uniformly distributed multi‐point anchoring and balanced electrostatic and steric stabilization. This research not only enhances the fundamental understanding of polymer‐nanoparticle interactions and polymer dispersants, but also provides valuable guidance for the tailored design of dispersants for specific industrial and scientific needs.
Funder
Fundamental Research Funds for the Central Universities
Natural Science Foundation for Young Scientists of Shanxi Province