三嵌段共聚物和两嵌段共聚物在水溶液中共混自组装成多室胶束结构的耗散粒子动力学模拟

doi:10.3866/PKU.WHXB201402122

Abstract

Abstract:

A dissipative particle dynamics simulation was performed to study the influence of blending different linear triblock copolymers A_xB_yC_z and linear diblock copolymers A_mB_n in an aqueous solution on the morphology diversity of the formed multicompartment micelles. The chain lengths of the linear triblock copolymers and diblock copolymers were varied to find the conditions of the formation of multicompartment micelles. The multicompartment micelle morphologies formed by the different blends of linear triblock copolymer and linear diblock copolymer are various, such as "worm-like" micelles, "hamburger" micelles, "sphere on sphere" micelles, and "core-shell-corona" micelles etc. Controlling the overall morphology and inner structure of the multicompartment micelles was possible using binary blends of a linear triblock copolymer and a diblock copolymer. The density profiles and the pair distribution function were calculated to characterize the structures of the obtained multicompartment micelles. In this work, by blending a linear triblock copolymer and a linear diblock copolymer, complex multicompartment micelles were prepared and characterized. This work shows that simply blending linear triblock copolymers and linear diblock copolymers is an effective way to control the morphology and structure of multicompartment micelles. This is more economical and easy to form multicompartment micelles in the engineering experiments. Therefore, the blending of copolymers should be given more attention in future for the design of new multicompartment micelles.

Key words: Dissipative particle dynamics simulation, Multicompartment micelles, Block copolymer, Morphology

XU Bo-Shen, ZHAO Ying, SHEN Xian-Liang, CONG Yue, YIN Xiu-Mei, WANG Xin-Peng, YUAN Qing, YU Nai-Sen, DONG Bin. Dissipative Particle Dynamics Simulation of Multicompartment Micelles Self-Assembled from a Blend of Triblock Copolymers and Diblock Copolymers in an Aqueous Solution[J].Acta Phys. -Chim. Sin., 2014, 30(4): 646-653.

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Dissipative Particle Dynamics Simulation of Multicompartment Micelles Self-Assembled from a Blend of Triblock Copolymers and Diblock Copolymers in an Aqueous Solution

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