Sphere-to-rod transition of triblock copolymer micelles at room temperature

被引：3
|
作者：
Ganguly, R [1 ]
Aswal, VK
Hassan, PA
Gopalakrishnan, IK
Yakhmi, JV
机构：
[1] Bhabha Atom Res Ctr, Novel Mat & Struct Chem Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India
[3] Bhabha Atom Res Ctr, TP&PED, Bombay 400085, Maharashtra, India
来源：
PRAMANA-JOURNAL OF PHYSICS | 2004年 / 63卷 / 02期
关键词：
block copolymer; light scattering; small-angle neutron scattering;
D O I：
10.1007/BF02704985
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A room temperature sphere-to-rod transition of the polyethylene oxide-polypropylene oxide-polyethylene oxide-based triblock copolymer, (PEO)(20)(PPO)(70) (PEO)20 micelles have been observed in aqueous medium under the influence of ethanol and sodium chloride. Addition of 5-10% ethanol induces a high temperature sphere-to-rod transition of the micelles, which is brought to room temperature upon addition of NaCl. The inference about the change in the shape of the micelles has been drawn from small-angle neutron scattering (SANS) and viscosity studies.
引用
收藏
页码：277 / 283
页数：7
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