Lattice formation of peripherally charged star polymers in aqueous solution

被引：22

作者：

Furukawa, T ^{[1
]}

Ishizu, K ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Organ Mat & Macromol, Int Res Ctr Polymer Sci, Meguro Ku, Tokyo 1528552, Japan

来源：

MACROMOLECULES | 2003年 / 36卷 / 02期

关键词：

D O I：

10.1021/ma0213807

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Functionalized poly(ethylene oxide) (PEO) stars (arm number f = 37-149) possessing peripheral tertiary amino groups were prepared by organized polymerization using macromonomers. Subsequently, positive charges were introduced into such peripheral tertiary amino groups by quaternization with methyl iodide. The structural ordering of these functionalized and peripherally charged stars was investigated through small-angle X-ray scattering in aqueous solution. PEO stars without charges (f > 72) formed a body-centered-cubic (bcc) structure near the overlap threshold (C*). On the other hand, peripherally charged PEO stars (f > 37) formed a lattice of bcc even below C*. The results indicate that ionization (electric double layer) of stars results in interparticle interactions giving rise to ordering. These interactions were screened by adding inorganic salt (KI).

引用

页码：434 / 439

页数：6

共 25 条

[1] Synthesis and characterization of poly(ethylene oxide) star polymers possessing a tertiary amino group at each arm end by organized polymerization using macromonomers [J].