水溶性聚合物对液晶乳液性能的影响  

Effect of water-soluble polymer on the properties of liquid crystal emulsions

作　　者：孔祥灵 蓝云萍 刘晓纯 王诗琼 郑益锋 陈来成 何秋星 Xiangling Kong;Yunping Lan;Xiaochun Liu;Shiqiong Wang;Yifeng Zheng;Laicheng Chen;Qiuxing He(School of Chemistry and Chemical Engineering,Guangdong Pharmaceutical University,Zhongshan,Guangdong 528458,China;Guangzhou Mashanghui Biotechnology Co.,Ltd.,Guangzhou,Guangdong 510800,China)

机构地区：[1]广东药科大学医药化工学院,广东中山528458 [2]广州麻尚会生物科技有限公司,广东广州510800

出　　处：《日用化学工业（中英文）》2023年第10期1115-1124,共10页China Surfactant Detergent & Cosmetics

摘　　要：探究了海藻酸钠、黄原胶、卡波姆940、聚丙烯酸钠等四种水溶性聚合物对液晶乳液性能的影响,通过稳定性、热失重、流变学等实验进行考察。结果表明:添加卡波姆940对液晶结构与粒径无明显影响,离心稳定性表现较佳;黄原胶和卡波姆940对液晶乳液的室温储存有一定帮助且结合水含量占比最大,液晶含量多;流变学结果表明,添加卡波姆940会增加乳液的表观黏度、触变环面积与黏弹性,使液晶胶网抵抗外力应变的能力变强且不易发生形变。The effect of four water-soluble polymers including sodium alginate,xanthan gum,carbopol 940,and sodium polyacrylate in the liquid crystal emulsions have been described in this work,through the experiments including stability tests,thermal gravimetric analysis,and rheology.The results show that the addition of carbopol 940 has no effect on the liquid crystal structure and particle size,but performs the best in centrifugation stability.In addition,xanthan gum helps the emulsion to preserve at room temperature,with the largest proportion of bound water and liquid crystal content.The rheological tests show that the four liquid crystal emulsions are non-Newtonian liquids.Incorporation of carbopol 940 increases the viscosity,thixotropy loop area and viscoelasticity of the emulsion,as well as increases the ability of the liquid crystal structure to withstand external forces and not easy to deformate.In conclusion,this paper provides experimental basis for the application of water-soluble polymers in the formulation of liquid crystal emulsions.

关 键 词：水溶性聚合物 液晶乳液 液晶结构 乳液性能 

分 类 号：O648.23[理学—物理化学]