文献类型：期刊文献

英文题名：Tailored design of well-defined comb-like copolymer dispersants for enhanced dispersion and stability of cerium oxide nanoparticle suspensions

作者：Man, Jinlin[1];Guan, Xinyue[1];Huang, Guanshao[1];Zhou, Junjie[1];Miao, Han[2];Li, Xinxin[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：141

期号：46

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20243717017690);WOS:【SCI-EXPANDED(收录号:WOS:001303861000001)】；

基金：Fundamental Research Funds for the Central Universities, Grant/Award Number: JKD01221701; Shanghai Pujiang Program, Grant/Award Number:21PJ1402100; Young Scientists Fund of the National Natural Science Foundation of China, Grant/Award Number: 52203258

语种：英文

外文关键词：applications; coatings; comb copolymers; hyperdispersant; nanoparticle

摘要：The 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. Schematic diagram of the dispersion mechanism of comb copolymers for cerium dioxide nanoparticles. image