RAFT聚合制备水性高颜料分散性油墨乳液  

Synthesis of water-based high-pigment dispersion ink emulsion by RAFT polymerization

作　　者：郑绪敏 袁宜恩 季永新[1] ZHENG Xumin;YUAN Yien;JI Yongxin(College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Shanghai Baolijia Chemical Co.,Ltd.,Shanghai 201400,China)

机构地区：[1]南京林业大学化学工程学院,江苏南京210037 [2]上海保立佳化工股份有限公司,上海201400

出　　处：《精细化工》2021年第8期1699-1704,共6页Fine Chemicals

摘　　要：以3-烯丙氧基-2-羟基-1-丙磺酸钠(COPS-1)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为原料,通过可逆加成-断裂链转移(RAFT)聚合制得高分子乳化剂,进而制备水性丙烯酸酯油墨乳液。通过FTIR对高分子乳化剂进行结构分析,并对其进行相对分子质量及分布和临界胶束浓度分析。探讨RAFT试剂[S,S′-二(α,α′-二甲基-α″-乙酸)三硫代碳酸酯]用量、高分子乳化剂亲水单体比例和亲水单体用量等对乳液性能的影响。结果表明:RAFT聚合所制备的高分子乳化剂具有良好的乳化性能,且相对分子质量分布较窄。其最佳制备工艺为RAFT试剂最佳用量为乳液单体质量的0.6%,亲水单体的最佳比例为m(COPS-1)∶m(AMPS)∶m(丙烯酸)=1∶2∶3,最佳亲水单体用量为高分子乳化剂单体质量的25%。乳胶粒子分散均匀,制备的乳胶膜具备两个玻璃化转变状态。Polymer emulsifier was prepared by reversible addition-fragmentation chain transfer(RAFT)polymerization using sodium 3-allyloxy-2-hydroxy-1-propane sulfonic acid(COPS-1)and 2-acrylamide-2-methylpropanesulfonic acid(AMPS)as raw materials.And then water-based acrylate ester ink emulsion was prepared.The structure and properties of the polymer emulsifier were characterized by FTIR,GPC and critical micelle concentration analysis.The effects of RAFT agent dosage,hydrophilic monomer ratio of polymer emulsifier,hydrophilic monomer dosage on the properties of emulsion were investigated.The results showed that the polymer emulsifier prepared by RAFT polymerization had good emulsifying properties and narrow relative molecular mass distribution under the conditions of dosage of RAFT reagent[S,S′-bis(α,α′-dimethyl-α"-acetic acid)trithiocarbonate]being 0.6% of the mass of monomers,m(COPS-1)∶m(AMPS)∶m(AA)=1∶2∶3,and hydrophilic monomer being 25% of the mass of monomers.The prepared emulsion particles had uniformly dispersion,and the latex film exhibited two glass transition states.

关 键 词：3-烯丙氧基-2-羟基-1-丙磺酸钠 2-丙烯酰胺基-2-甲基丙磺酸 RAFT聚合 丙烯酸 油墨 特种染料与颜料 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业] TQ628.5