Hybridization of Polymeric Micelles in a Dispersion Mixture
Hybridization of Polymeric Micelles in a Dispersion Mixture
复制标题
分散体混合物中聚合物胶束的杂交
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Chi Wu
中科院分区：
文献类型：
--
作者：
Ping P. Cai;Chengqing C. Wang;Jing Ye;Zuowei Xie;Chi Wu
在选择性溶剂正己烷中，二嵌段线团-棒状共聚物聚（二茂铁基二甲基硅烷-嵌段-二甲基硅氧烷）（PFS-b-PDMS）可以形成具有不溶性和聚集的PFS核和可溶性溶胀的PDMS壳的球形核-壳聚合物胶束。随着PFS含量的增加，胶束变得更大。由PFS 138-b-PDMS 702和PFS 235-b-PDMS 837制成的两种分散体的混合物导致这两种嵌段共聚物链的杂化。通过静态和动态激光光散射相结合的杂交动力学进行了研究。两种胶束分散液混合后，形成了由PFS 138-b-PDMS 702和PFS 235-b-PDMS 837组成的较大的杂化胶束，而这两种胶束的“纯”胶束则有所减少。由于PFS嵌段是刚性的棒状嵌段，杂化可归因于熵增益以及空间填充。
In a selective solvent, n-hexane, diblock coil−rod-like copolymers poly(ferrocenyldimethylsilane-block-dimethylsiloxane) (PFS-b-PDMS) can form spherical core−shell polymer micelles with an insoluble and aggregated PFS core and a soluble swollen PDMS shell. The micelles become larger with an increasing PFS content. The mixture of two dispersions made of PFS138-b-PDMS702 and PFS235-b-PDMS837 results in hybridization of these two kinds of block copolymer chains. The hybridization kinetics was studied by a combination of static and dynamic laser light scattering. As soon as the two micelle dispersions were mixed, larger hybrid micelles made of PFS138-b-PDMS702 and PFS235-b-PDMS837 were formed at the expense of each kind of the “pure” micelles. The hybridization can be attributed to the entropy gain as well as the space filling because the PFS block is rigid and rodlike.