高分子表面活性剂自聚效应对溶液介观结构的影响

采用动态密度泛函理论分别以PEB［(PEO) ₁₁-(PBO)₁₁］和PL64［(PEO)₁₃-(PPO)₃₀-(PEO)₁₃］为研究对象，模拟了两嵌段和三嵌段共聚物高分子表面活性剂自聚效应对介观结构的影响.PEB在自聚效应的影响下可以形成多层囊泡结构，并且PEB聚集体的自聚程度越高，多层囊泡的层数越多，自聚程度越低，多层囊泡中包含的水分子越多.而PL64在自聚效应的影响下可以形成球形多孔结构以及球状和短棒状聚集结构.此外，通过比较序参数以及介观结构的演化过程，给出了PEB多层囊泡结构与PL64球形多孔结构和球状短棒状聚集结构的演化机理.

Effects of autocongregation of polymer surfactants on solution meso-structure

The dynamic density functional theory(DDFT)was used to study the autocongregation effects of diblock copolymer and triblock copolymer surfactant on the mesoscopic structure with the objects PEB[(PEO)_ 11-(PBO)_ 11]and PL64[(PEO)_ 13-(PPO)_ 30-(PEO)_ 13].Under the autocongregation effect,the multilamellar vesicles of PEB were observed.A much greater lamellar number would be observed if the initial PEB congregation had better autocongregation,and on the contrary,much more water would be contained in the multilamellar vesicle if the initial PEB congregation had worse autocongregation.Under the autocongregation effect,the spheric mesoporous structure and congregation structure of spheres and coshes of PL64 were also observed.Furthermore,through depicting the evolution of order parameter and morphology,the formation mechanisms of the multilamellar vesicle of PEB,the spheric mesoporous structure and congregation structure of spheres and coshes of PL64 were presented.