Viscoelastic properties of pNIPAM-hydrogels: A mode-coupling theory study

被引：4

作者：

Maier, Joel Diaz ^{[1
]}

Wagner, Joachim ^{[1
]}

机构：

[1] Univ Rostock, Inst Chem, D-18051 Rostock, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2022年 / 157卷 / 11期

关键词：

GLASS-TRANSITION; SUPERCOOLED LIQUIDS; STRUCTURAL RELAXATION; SUSPENSIONS; SCATTERING; DYNAMICS; SPECTROSCOPY; PARTICLES; SPECTRA; FLOW;

D O I：

10.1063/5.0097841

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate the viscoelastic properties of poly(N-isopropylacrylamide) (pNIPAM) hydrogels cross-linked with glutaraldehyde by means of small amplitude oscillatory and steady shear experiments in dependence on the frequency and shear rate. These properties are strongly influenced by the ratio of monomer and glutaraldehyde as a cross-linker. Due to the thermosensitivity of pNIPAM, the rheological properties of these hydrogels can be tuned by the temperature as an external stimulus. The experimentally obtained viscosities and linear viscoelastic moduli are analyzed by a schematic mode-coupling ansatz employing a rescaled F-12-model. Published under an exclusive license by AIP Publishing.

引用

页数：9

共 59 条

[1] LOW-FREQUENCY RAMAN-SPECTROSCOPY OF SUPERCOOLED FRAGILE LIQUIDS ANALYZED WITH SCHEMATIC MODE-COUPLING MODELS [J].