空间位阻单元对两亲三元聚合物骨架构建及聚集行为的影响

Effect of Steric Hindrance on Architecture Design and Associative Behavior of Amphiphilic Tripolymers

摘要: 合成出一系列含空间位阻单元和密集疏水侧链的新型两亲三元聚合物。采用稳态荧光、动态光散射（DLS）和透射电子显微镜（TEM）考察聚合物的聚集行为。结果表明:聚合物中两亲单元摩尔分数增加，聚集体微区极性和聚集体尺寸同时减小；空间位阻单元摩尔分数增加，聚集体微区极性不变但尺寸增大，尺寸增大程度随两亲单元摩尔分数增加而减小。

Abstract: A novel series of amphiphilic tripolymers were synthesized, and the associative behaviors of the polymers were investigated by steady state fluorescence, dynamic light scattering (DLS), and transmission electron micrograph (TEM). Results showed that the increase of amphiphilic content resulted in a simultaneously decrease of the microdomain polarity and the aggregate size. The increase of the steric content leaded to an increase of aggregate size but no change of microdomain polarity, and the extent of size increasing decreases along with the increasing of amphiphilic units.