A biobased degradable superabsorbent resin and a preparation method thereof

CN123026752APending Publication Date: 2026-11-03SHANDONG YANQUAN NEW MATERIALS CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202611548378.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-10-08
Publication Date
2026-11-03

AI Technical Summary

Technical Problem

Existing bio-based biodegradable superabsorbent resins suffer from problems such as low mass transfer efficiency, slow liquid absorption rate, poor salt resistance, the ability to only adsorb liquid water, and poor uniformity in scale-up production.

Method used

A hierarchical porous structure was constructed using a two-step impregnation in-situ grafting process. Amphoteric functional monomers were introduced, hygroscopic salts were loaded, and bio-based surface cross-linking treatment was performed to form a three-level hierarchical structure of fiber skeleton-gel thin layer-connected pores, which improved mass transfer efficiency and salt resistance, and achieved gas-liquid dual-state water absorption.

Benefits of technology

It significantly improved the absorption rate, the water absorption ratio of pure water and physiological saline, expanded the water absorption capacity in low humidity environments, and achieved stability and biodegradability for industrial production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN123026752A_ABST
    Figure CN123026752A_ABST
Patent Text Reader

Abstract

The application discloses a kind of biobased degradable superabsorbent polymer and preparation method thereof, belong to biobased degradable polymer material and superabsorbent polymer preparation technical field.The preparation method includes: (1) cellulose base material pretreatment;(2) initiator impregnation load;(3) zwitterionic mixed monomer liquid preparation;(4) in-situ grafting crosslinking polymerization;(5) washing and pre-drying;(6) hygroscopic salt controllable load;(7) biobased surface crosslinking treatment;(8) crushing screening.The application is in-situ grafted zwitterionic copolymer on the surface and inside of cellulose fiber by two-step impregnation in-situ grafting process and forms three-dimensional crosslinking network, retains inter-fiber connected pore and forms hierarchical porous structure, then loads hygroscopic salt to realize gas-liquid dual-state water absorption, and the gel strength is improved by biobased surface crosslinking.The superabsorbent polymer prepared by the application has high liquid absorption rate, high salt tolerance, gaseous water hygroscopic function and excellent biodegradability.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Degradable super absorbent resin and preparation method thereof

    CN119390916A