Covalent Ferrohydrogels Based on Elongated Particulate Cross-Linkers

被引:25
|
作者
Roeder, L. [1 ]
Reckenthaeler, M. [1 ]
Belkoura, L. [1 ]
Roitsch, S. [1 ]
Strey, R. [1 ]
Schmidt, A. M. [1 ]
机构
[1] Univ Cologne, Dept Chem, D-50939 Cologne, Germany
关键词
SYMMETRIC TOP MACROMOLECULES; CIRCULAR-CYLINDERS; HEMATITE PARTICLES; COBALT FERRITE; POLYMER; NANOPARTICLES; HYDROGELS; MODEL; GELS; COEFFICIENTS;
D O I
10.1021/ma501396j
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The incorporation of surface-functionalized spindle-like hematite nanoparticles as particulate cross-linkers in poly(acrylamide) hydrogel matrices delivers ferrogels with a covalent type of particlematrix interaction. By systematic investigation of the stability and the internal architecture of the resulting gels, the regime of resilient gels is identified. The swelling properties and the rheological behavior are in accordance with a network structure based on particle nodes interlinked by long polymer segments and a significant fraction of loops.
引用
收藏
页码:7200 / 7207
页数:8
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