一种甲基丙烯酸十四酯疏水缔合型聚丙烯酸钠增稠剂的合成及其性能研究  

Synthesis and Performance of A Hydrophobic Association Polyacrylate sodium Thickener with Tetradecyl Methacrylate

作　　者：王永丽[1] 姚钧健 杨梅[1] 沈小莉[1] 姚景元 李忠军[1] WANG Yongli;YAO Junjian;YANG Mei;SHEN Xiaoli;YAO Jingyuan;LI Zhongjun(Guangdong Food and Drug Vocational College,Guangdong Guangzhou 510520;Jiangmen Zhongsheng Biotechnology Co.,Ltd.,Guangdong Jiangmen 529000,China)

机构地区：[1]广东食品药品职业学院,广东广州510520 [2]江门市新会区中盛生物科技有限公司,广东江门529000

出　　处：《广州化工》2025年第7期58-62,共5页GuangZhou Chemical Industry

摘　　要：以丙烯酸钠为亲水单体,以甲基丙烯酸十四酯为疏水单体,采用胶束共聚法,用紫外光引发合成了疏水缔合增稠剂,并确定了其最佳合成条件:中和度为80%、固含量为38%的碱性丙烯酸中和液作为基础胶水;浓度50%的烷基糖苷APG表面活性剂,加入量为甲基丙烯酸十四酯量的2.5倍;浓度为2%UV的光引发剂TPO,加入量为0.4%(以胶水量为基准)。采用傅里叶变换红外光谱仪(FT-IR)对疏水单体及疏水缔合增稠剂进行了结构表征,疏水单体及疏水缔合增稠剂的红外光谱对比表明:TA14与丙烯酸发生了共聚,已将疏水基团带入到共聚物之中,使它既具有亲水基团,同时也具有疏水基团。对疏水缔合增稠剂的性能研究表明,该疏水缔合型增稠剂具有抗电解质、抗剪切等优异性能,而获得高黏度的增稠剂,疏水单体含量应超过一定值,且溶液浓度应大于临界胶束浓度。A hydrophobic association type thickener was synthesized through micelle copolymerization and UV-initiated copolymerization using sodium acrylate and tetradecyl methacrylate as monomers.The optimal reaction conditions were as follows:using an alkaline acrylic acid neutralization solution with a neutralization degree of 80%and a solid content of 38%as the base adhesive,using an alkyl glycoside APG surfactant with a concentration of 50%and a dosage of 2.5 times that of tetradecyl methacrylate,the concentration of the UV photoinitiator TPO was 2%,and its addition amount was 0.4%(based on the amount of glue).Structural characterization of the hydrophobic monomer and the hydrophobic association thickener was performed using a Fourier transform infrared spectrometer(FT-IR).A comparison of the infrared spectra of the hydrophobic monomer and the hydrophobic association thickener showed that TA14 was copolymerized with acrylic acid,which brought the hydrophobic group into the copolymer,making it have both hydrophilic and hydrophobic groups.A study on the performance of the hydrophobic association thickener showed that the hydrophobic association thickener had excellent properties such as electrolyte resistance and shear resistance.For the high-viscosity thickening agent,the content of the hydrophobic monomer should exceed a certain value,and the solution concentration should be greater than the critical micelle concentration.

关 键 词：疏水缔合 胶束共聚 甲基丙烯酸十四酯 增稠剂 丙烯酸钠 

分 类 号：TQ317[化学工程—高聚物工业]