发表机构
School of Science, Inner Mongolia University of Science and Technology(内蒙古科技大学理学院)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本研究利用晶格自洽场理论,发现添加均聚物可调控含刚性嵌段两亲性三嵌段共聚物的胶束聚集与重排行为,其效果取决于棒状嵌段长度和浓度,为理解刚性核胶束生长机制提供参考。
AI 中文摘要
采用晶格自洽场理论研究了B均聚物的添加对两亲性无规/棒状/无规BAB三嵌段共聚物聚集行为的影响。该影响取决于疏水棒状嵌段的长度和共聚物浓度。与溶液相比,在低浓度下,均聚物的添加有利于立方体和大型层状胶束的出现。虽然它丰富了结构行为,但重排受到抑制。随着棒状嵌段的增长,重排与取向依赖的扩散和逆扩散过程相关。在相对较高的浓度下,添加均聚物促进了重排。对于长棒状嵌段的情况,出现了与逆层状化和协同生长相关的排列。在高浓度下,对于短棒状嵌段体系,均聚物的添加有利于与有序/无序转变相关的胶束重排,而中等长度和长棒状嵌段体系中的重排则受到抑制。这项工作有助于理解具有刚性嵌段核心的胶束的生长机制。
英文摘要
The effect of B homopolymer adding on the aggregation behavior of amphiphilic coil/rod/coil BAB triblock copolymers was studied using lattice self-consistent field theory. It depends on the length of the hydrophobic rod block and copolymer concentration. Compared with the solutions, at low concentrations, homopolymer addition is favorable to the emergence of cubic and large lamellar micelles. Although it enriches the structural behavior, the rearrangement is suppressed. As rod blocks increase, the rearrangement is related to the orientation-dependent diffusion and inverse diffusion processes. At relatively high concentrations, adding homopolymers promotes rearrangement. For long rod block case, the arrangements related to inverse laminarization and the cooperative growth emerges. At high concentrations, for short rod block system, homopolymer addition is advantageous to micelle rearrangement concerned with order/disorder transition, and the rearrangements in the system of intermediate length and long rod blocks are suppressed. This work aids in understanding of the growth mechanism of micelles with rigid block cores.
Comments12 pages, 11 figures
Journal refCondens. Matter Phys. 2026, 29 (3), 33602