Poly(ethylene glycol) star polymer hydrogels

被引：112
|
作者：
Keys, KB
Andreopoulos, FM
Peppas, NA [1 ]
机构：
[1] Purdue Univ, Sch Chem Engn, Biomat & Drug Delivery Labs, W Lafayette, IN 47907 USA
[2] Univ Pittsburgh, Dept Chem Engn, Ctr Biotechnol & Bioengn, Pittsburgh, PA 15261 USA
来源：
MACROMOLECULES | 1998年 / 31卷 / 23期
关键词：
D O I：
10.1021/ma980999z
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(ethylene glycol) (PEG) star polymer hydrogels mere prepared by gamma-irradiation of aqueous solutions of star PEG polymers. The swelling behavior of these gels in deionized water at 37 degrees C indicated that the gels prepared from PEG star polymers with a small number of long arms swelled to a greater extent than those prepared from PEG star polymers with a large number of short arms. PEG star polymers and branched PEG polymers were modified to incorporate acrylate groups on the ends of the polymer arms. These acrylated star or branched polymers were copolymerized with poly(ethylene glycol) diacrylate in the presence of UV light. The ensuing materials swelled to a greater extent than hydrogels prepared without acrylated star or branched PEG polymers. Number-average molecular weights were calculated using several rubber elasticity-based theories.
引用
收藏
页码：8149 / 8156
页数：8
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