Star poly(ethylene oxide)s from carbosilane dendrimers

被引：92
|
作者：
Comanita, B [1 ]
Noren, B [1 ]
Roovers, J [1 ]
机构：
[1] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
来源：
MACROMOLECULES | 1999年 / 32卷 / 04期
关键词：
D O I：
10.1021/ma981201e
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of 4-arm, 8-arm, and 16-arm poly(ethylene oxide)s (PEO) have been synthesized from hydroxy functionalized carbosilane dendrimers of generation zero, one, and two, respectively. The PEO arms are grown anionically from the multifunctional cores. The polymers have narrow molecular weight distributions. Analysis of the molecular weight, intrinsic viscosity, and translational diffusion coefficient in methanol confirms the star structure of the polymers. The aqueous solutions of the star PEOs appear normal. Low molecular weight star polymers, however, show abnormally low intrinsic viscosities and are adsorbed on the size exclusion column hydrogel material.
引用
收藏
页码：1069 / 1072
页数：4
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