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采用半连续种子乳液聚合法,以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸缩水甘油酯(GMA)为单体,十六烷基三甲基氯化铵(CTAC)为阳离子乳化剂,二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,2,2-偶氮二(2-甲基丙基咪)二盐酸盐(AIBA)为阳离子引发剂,制备阳离子乳液。研究了乳化剂用量、引发剂用量、保温时间以及反应温度条件对乳液性能的影响。结果表明:在反应温度80℃、乳化剂用量为单体质量的6%、引发剂用量为单体质量的0.5%、保温时间为2 h时,单体转化率达到98.03%,核壳结构由透射电镜、纳米激光粒度仪表征,结果表明:乳胶粒子的平均粒径为57.21 nm,粒径分布窄(PDI=0.051),乳液的Zeta电位为47.62 m V。利用该乳液对蔗渣纤维进行表面疏水改性,并进行亲水性测试,结果表明,改性后蔗渣纤维接触角由0°提高至98°,疏水改性效果明显。
Using semi-continuous seed emulsion polymerization method, cetyltrimethylammonium chloride (CTAC) was used as a monomer, styrene (St), butyl acrylate (BA) and glycidyl methacrylate (GMA) Emulsifier, ethylene glycol dimethacrylate (EGDMA) as crosslinking agent and 2,2-azobis (2-methylpropylimidazolium) dihydrochloride (AIBA) as cationic initiator . The effects of emulsifier dosage, initiator dosage, holding time and reaction temperature on the properties of emulsion were studied. The results showed that the monomer conversion was up to 98.03% when the reaction temperature was 80 ℃, the amount of emulsifier was 6%, the amount of initiator was 0.5% TEM and Nano laser particle sizer. The results showed that the average particle size of the latex particles was 57.21 nm, the particle size distribution was narrow (PDI = 0.051) and the Zeta potential of the emulsion was 47.62 mV. The latex was used to modify the surface of bagasse fiber and the hydrophilicity test was carried out. The results showed that the contact angle of bagasse fiber after modification increased from 0 ° to 98 °, and the hydrophobic modification effect was obvious.