| abstract |
The invention relates to the technical field of hydrogels, and discloses a chemically cross-linked modified polypropylene-based degradable hydrogel, comprising the following formulation raw materials and components: modified nanocellulose, acrylic acid, cross-linking agent, initiator agent, polyvinyl alcohol. The chemically cross-linked modified polypropylene-based degradable hydrogel, NaIO 4 selectively oxidizes the activated nanocellulose, oxidizes part of the hydroxyl group to an aldehyde group, and the aldehyde group undergoes a condensation reaction with the amino group in the acrylamide , to obtain acrylated modified nanocellulose, the alkenyl group and acrylic acid in the modified nanocellulose undergo a free radical condensation reaction to form a nanocellulose-grafted polyacrylic acid, and the nanocellulose enhances the polyacrylic acid hydrogel. Toughness and tensile strength, Ca 2+ forms ionic crosslinks with hydroxyl groups in polyvinyl alcohol and hydroxyl groups in nanocellulose, crosslinking polyvinyl alcohol and polyacrylic acid, and polyvinyl alcohol and nanocellulose have excellent biodegradability . |