名称:胶束结构;micellar structure 表面活性剂分子在其浓度超过临界值后形成特殊聚集体的形状与分子在其中的空间排布。在水溶液中,分子的亲水基向外伸向水相,疏水基则以范德华力紧密排列;而在有机溶液中,则是疏水基向外伸向有机相,亲水基相互吸引紧密排列在内部。形状可分为球状、腊肠状或层状。浓度为1%~2%时,胶束较小,呈球状,大小约2~10nm,大致由50~150个分子聚集而成;浓度增大时,胶束逐渐呈腊肠状、层状,大小约100~300nm。胶束结构使混合体系成为稳定的两相分散体系。
嵌段共聚物中的一种,两亲性三嵌段共聚物能在选择性溶液中形成丰富多样的胶束结构,因此备受人们关注。
Great effort have been given to the formation of various micellarmorphologies from the self-assembly of amphiphilic triblock copolymer in selective solvent.
结果表明,胶束体系具有较强的粘弹性、剪切变稀特性和网络结构。
The results showed that, the micellar systems possess viscoelasticity, shear-thinning property and net-work structure.
本文研究了1631、双联阳离子表面活性剂和水杨酸钠形成粘弹性胶束体系的流变特性和微观结构。
The Theological properties and microscope structures for viscoelastic micellar systems consisting of 1631, cationic Geminis and sodium salicylic were investigated in this paper.
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