Self-Assembly Behavior of Thermoresponsive Bis-Solvophilic Linear Block Terpolymers: A Simulation Study

被引：7

作者：

Moultos, Othonas ^{[1
]}

Gergidis, Leonidas N. ^{[2
]}

Vlahos, Costas ^{[1
]}

机构：

[1] Univ Ioannina, Dept Chem, GR-45110 Ioannina, Greece

[2] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

来源：

MACROMOLECULES | 2012年 / 45卷 / 05期

关键词：

MOLECULAR-DYNAMICS; RAFT POLYMERIZATION; TRIBLOCK COPOLYMERS; MICELLES; MORPHOLOGIES; PH; POLY(N-ISOPROPYLACRYLAMIDE); ARCHITECTURE; TRANSITIONS; SOLVENTS;

D O I：

10.1021/ma2025573

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The micellization behavior of linear ABC terpolymers containing a solvophobic block in the middle, accompanied by solvophilic and thermoresponsive blocks at the ends, is studied by means of Brownian dynamics simulations. The effects of the length of the thermoresponsive moiety on the shape and size of aggregates, formed as the temperature of the solution reduces and solvent progressively becomes bad for the thermoresponsive block, are studied in detail. Two crossover temperatures, T* = 2.4 and T* = 2.0, were found. The first one corresponds to the formation of loose aggregates and the second one to regular micelles. At both solution temperatures, as the thermoresponsive block length increases, a shape transition from spherical to segmented worm-like and back to spherical loose aggregates or micelles was observed. Our results are compared with recent experimental findings of similar systems.

引用

页码：2570 / 2579

页数：10

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