Abstract
Several methods to increase the mechanical and swelling properties of Poly(N-isopropylacrylamide) gels are known. In this study different methods were combined to systematically alter the gel properties. The combination of nanocomposite and cryo gels as well as silica post modification was used to modulate the gel strength. This new cryo-clay-silica gel based on N-isopropylacrylamide was investigated in respect to degree of swelling, kinetic of thermo responsive behavior and tensile strength. Here, the properties of new cryo-clay-silica gel were compared with properties of clay-, silica-clay and cryo-clay gels.
Highlights
Polymer gels are an important field in scientific research due to their adjustable properties and, a variety of applications were known for these type of polymers [1]
Treating a chemically cross-linked gel with silica nanoparticles adsorption of the polymer chains onto the nanoparticles forms a second type of cross-links [7]
The influence on gel properties of this route was analyzed. It observed that the polymer cryo-clay-silica modification combines and intensifies the influence was on observed that thethermo polymer cryo-clay-silica intensifies the counterpart
Summary
Polymer gels are an important field in scientific research due to their adjustable properties and, a variety of applications were known for these type of polymers [1]. Treating a chemically cross-linked gel with silica nanoparticles adsorption of the polymer chains onto the nanoparticles forms a second type of cross-links (physical) [7]. This combination could successfully be transferred to the preparation of polymer-clay composites. These composites were used to improve the physical properties of gels
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