| abstract |
The invention is characterized in the Superporous hydrogels (SPHs) of modification and their formation method.SPHs of the present invention is by carefully selecting hydrophobic/hydrophilic reactivity composition and being prepared by coordinating foaming and polyreaction, SPHs had uniform structure and favourable physical and mechanical property when this caused forming, and comprised swelling, intensity, robustness and resilience.When being used for the swelling environments of very severe, SPHs of the present invention is used for during time expand especially, such as the low pH environment of gastric juice in the stomach. |