In situ monitoring the sol-gel transition for polyacrylamide gel

被引：17

作者：

Nita, Loredana Elena ^{[1
]}

Chiriac, Aurica P. ^{[1
]}

Bercea, Maria ^{[1
]}

Neamtu, Iordana ^{[1
]}

机构：

[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania

来源：

RHEOLOGICA ACTA | 2007年 / 46卷 / 05期

关键词：

rheological; poly(acrylamide); gel;

D O I：

10.1007/s00397-006-0141-z

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The effects of heating rate and shear stress on the sol-gel transition for a polyacrylamide gel during in situ preparation were investigated by dynamic rheology. The gelation evolution was also studied through monitoring of the static gelation process by means of temperature, pH, and conductivity variation. The gels were prepared by polymerization of acrylamide crosslinked with N, N'-methylenebisacrylamide using a redox initiation based on potassium persulfate/ascorbic acid. In situ gelation process was studied using oscillatory deformation tests at constant frequency of 0.1 Hz for different heating rate ( from 0.5 to 5 degrees C/min) and shear stress (in the range of 0.1 to 10 Pa).

引用

页码：595 / 600

页数：6

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