Method for modifying polyamide membrane
RU2025105533APending Publication Date: 2026-09-10FEDERALNOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATELNOE UCHREZHDENIE VYSSHEGO OBRAZOVANIJA ALTAJSKIJ GOSUDARSTVENNYJ TEKHNICHESKIJ UNIV IM I I POLZUNOVA ALTGTU
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Patent Information
- Application Number
- RU2025105533
- Authority / Receiving Office
- RU · RU
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-09-10
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Claims
A method for modifying a membrane with polydiallyldimethylammonium chloride, PDADMAC, comprising maintaining the membrane in a solution of PDADMAC in a solvent, characterized in that the modification is carried out with a solution of chitosan with a concentration of 2-8% in an organic acid, followed by dilution in water to a concentration of 0.01-0.04%, wherein the resulting solution is passed through the surface of the polyamide membrane under a pressure of 7 to 10 atm for 360-600 minutes at a temperature of 15-35°C, after which the membrane is dried at a temperature of up to 50°C until completely dry.