US 12,281,211 B2
Chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and metal ion-detecting reagent and method
Shuang Li, Tianjin (CN); Zhixian Gao, Tianjin (CN); Dianpeng Han, Tianjin (CN); Jialei Bai, Tianjin (CN); Yuan Peng, Tianjin (CN); Jin Wu, Tianjin (CN); Kang Qin, Tianjin (CN); Shuyue Ren, Tianjin (CN); Yu Wang, Tianjin (CN); Huanying Zhou, Tianjin (CN); Tie Han, Tianjin (CN); and Xiaoxiao Lin, Tianjin (CN)
Assigned to Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin (CN)
Filed by Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin (CN)
Filed on Feb. 4, 2022, as Appl. No. 17/592,566.
Claims priority of application No. 202111333589.3 (CN), filed on Nov. 11, 2021.
Prior Publication US 2023/0147119 A1, May 11, 2023
Int. Cl. C08J 3/075 (2006.01); C08J 3/00 (2006.01); C08J 3/24 (2006.01); C08J 9/00 (2006.01)
CPC C08J 3/075 (2013.01) [C08J 3/005 (2013.01); C08J 3/24 (2013.01); C08J 9/0095 (2013.01); C08J 2305/08 (2013.01); C08J 2333/26 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A chitosan-polyacrylamide composite porous hydrogel, which is prepared by in situ polymerization of a chitosan sol, an acrylamide, a crosslinking agent and a surfactant into a mixed solution comprising liquid droplets, followed by steps of curing, washing, and freeze-drying;
wherein the chitosan-polyacrylamide composite porous hydrogel has a porosity of 60-70% and an average pore size of 40-60 μm.