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高内相/自乳液聚合的共轭亚油酸低聚体的囊泡化及稳定性 被引量:6
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作者 樊晔 刘婷婷 +1 位作者 方云 夏咏梅 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2019年第6期1193-1200,共8页
采用自乳化法制备了高内相共轭亚油酸(CLA)的水包油(O/W)乳液,并通过热引发乳液聚合反应得到共轭亚油酸低聚体(oligo-CLA);将oligo-CLA用于自组装脂肪酸囊泡(FAV).透射电子显微镜和动态激光光散射表征结果均表明,在pH=8.6~13范围内得到... 采用自乳化法制备了高内相共轭亚油酸(CLA)的水包油(O/W)乳液,并通过热引发乳液聚合反应得到共轭亚油酸低聚体(oligo-CLA);将oligo-CLA用于自组装脂肪酸囊泡(FAV).透射电子显微镜和动态激光光散射表征结果均表明,在pH=8.6~13范围内得到了囊泡粒径为10~30 nm的FAV,此结果对提高FAV的pH适应性具有理论意义.自乳液聚合实验结果表明,该高内相自乳化/热引发低聚反应策略可以使浓度高达75.3%(质量分数)的CLA完成无外加表面活性剂乳液聚合,并使共轭双键总自交联率达到33%且控制oligo-CLA的平均聚合度约为6,对规模化生产oligo-CLA及构筑FAV具有实用价值.与CLA相比, oligo-CLA具有更好的低温溶解性,由其自组装的FAV具有更好的环境适应性,如耐酸性和抗钙皂能力,而且显示出较好的钙响应囊泡体积膨胀率;以极少量非离子表面活性剂Span 40或AEO2辅助oligo-CLA形成的杂化囊泡具有更宽的pH适应性.因此,所制备的FAV在药物释放体系、日用化学产品、家用洗涤剂和个人护理产品中具有更广阔的应用前景. 展开更多
关键词 共轭亚油酸 低聚体 脂肪酸囊泡 囊泡稳定性 自乳液聚合
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STUDIES ON HIGH SOLID CONTENT AND STABLE EMULSIFIER—FREE EMULSION POLYMERIZATION
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作者 Tang Guangliang Hao Guangjie +1 位作者 Song Moudao Zhang Banghua 《Chinese Journal of Reactive Polymers》 1998年第2期61-67,共7页
In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow beha... In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow behavior of the latexes,morphology of the obtained latex particles, dynamic viscoelastic behavior, tensilestrength and water resistance properties of the resulted copolymers were investigated.The experimental results show that with the addition of AHPS, stability of the emulsionis greatly improved that there appears no apparent precipitation dunring thepolymerization and storage at room temperature for 6 months and at -10℃ for fourmonths. Flow of the latexes follows the Bingham body laws, diameter of the latexparticles is about 0.6μn, of which is larger than that of by conventional emulsionpolymerization(0.12μm). In addition, not only water resistance of the copolymersobtained by emulsifier-free emulsion polymerization is greatly improved, but alsotensile strength is obviously enhanced. 展开更多
关键词 EMULSIFIER-FREE emulsion polymerization ACRYLATE Allyloxy-2-hydrory-I-propanesulfonate saft
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