Tailoring Architecture of Nanothin Hydrogels: Effect of Layering on pH-Triggered Swelling

被引：30

作者：

Kozlovskaya, Veronika ^{[1
]}

Zavgorodnya, Oleksandra ^{[1
]}

Wang, Yun ^{[1
]}

Ankner, John F. ^{[2
]}

Kharlampieva, Eugenia ^{[1
]}

机构：

[1] Univ Alabama Birmingham, Dept Chem, Birmingham, AL 35294 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

ACS MACRO LETTERS | 2013年 / 2卷 / 03期

关键词：

BONDED MULTILAYERS; CONTROLLED-RELEASE; THIN-FILMS; NEUTRON; CAPSULES; FABRICATION; WATER;

D O I：

10.1021/mz300661f

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We have tailored the internal architecture of ultrathin poly(methacrylic acid) (PMAA) hydrogels from well stratified to highly intermixed by controlling the internal structure in layer-by-layer templates used for hydrogel fabrication. We have found pH-triggered swelling properties of these hydrogels to be significantly affected by hydrogel architecture. Well-stratified hydrogels exhibited a dramatic 10-fold increase in thickness when transitioned between pH = 5 and 7.5, unlike the 2-fold swelling observed in less-organized hydrogels.

引用

页码：226 / 229

页数：4

共 49 条

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