文献类型：期刊文献

英文题名：Preparation of organic pigment dispersants based on comb-shaped acrylic copolymer and their applications

作者：Liu, Tingwu[1,2,3];Chen, Kexin[1,2];Han, Jianwei[1,2];Wang, Limin[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Clariant Chem Technol Shanghai Ltd, 288 Chunde Rd, Shanghai 201108, Peoples R China

年份：2025

卷号：236

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20250517801516);WOS:【SCI-EXPANDED(收录号:WOS:001415013000001)】；

基金：This research was financially supported by the Sinopec Seeding Program (ZC0607-0869) and Clariant Chemicals Technology (Shanghai) Ltd. Support from the Fundamental Research Funds for the Central Universities (SLA13223001) was also acknowledged. The authors gratefully acknowledge the insightful discussions with Dr. Siyu Li

语种：英文

外文关键词：Polymeric dispersants; Waterborne system; Phthalocyanine blue; Surface properties

摘要：Optimizing the structure of comb-shaped acrylic copolymers is essential for developing high-performance organic pigment dispersants in waterborne coatings. In this study, a series of copolymers composed of benzyl methacrylate (BzMA) and poly(ethylene glycol) methyl ether methacrylate (mPEGMA) was synthesized via solution polymerization, maintaining a consistent molecular weight while varying the monomer ratios. The copolymers were comprehensively characterized using gel permeation chromatography (GPC), nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC) analysis. Surface properties were investigated by measuring the critical micelle concentration (CMC), micellization energy, and limiting area at the liquid-gas interface as a function of polymer concentration and surface tension. The thickness of the hydration layer was calculated based on the structure, while the micelle size was determined using dynamic light scattering (DLS). Adsorption isotherms of the polymers on phthalocyanine blue were measured to evaluate changes in adsorption amount, adsorption energy, and limiting area at the solidliquid interface in relation to the monomer ratio. Comparison of the results from adsorption and surface tension tests elucidated polymer conformations at both liquid-gas and solid-liquid interfaces. The dispersing performance of the polymers was also evaluated by testing the viscosity, particle size, and stability of pigment dispersions. This study provides insights into the design of effective polymeric dispersants for waterborne systems.