Vesicles formed from a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer in dilute aqueous solution

被引：135

作者：

Schillén, K ^{[1
]}

Bryskhe, K ^{[1
]}

Mel'nikova, YS ^{[1
]}

机构：

[1] Lund Univ, Ctr Chem & Chem Engn, S-22100 Lund, Sweden

来源：

MACROMOLECULES | 1999年 / 32卷 / 20期

关键词：

D O I：

10.1021/ma9908144

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hydrophobic polyethylene oxide-polypropylene oxide-polyethyelene oxide (PEO-PPO-PEO) triblock copolymers in dilute water solutions was prepared to form a vesicles by extrusion method. The triblock copolymer vesicle consists of a polymer layer, with a PPO interior shielded by PEO layers on each side that encloses a water compartment. The time stability of L121 vesicles was investigated by turbidity measurements. The turbidity increases by approximately 50% within the chosen time interval which shows that these vesicles are not thermodynamically stable. After sufficiently long time, the vesicle solution eventually reverts to its original state as a dispersed lamellar phase in equilibrium with an Lα phase.

引用

页码：6885 / 6888

页数：4

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