Preparation method of durable self-repairing biomimetic supermolecular moisture-absorbing and antibacterial PET fabric coating

Abstract

The application discloses a kind of durable self-repairing biomimetic supramolecular hygroscopic antibacterial PET fabric coating preparation method, including under nitrogen atmosphere, TPC, EG, PEG and chloroform are added to three-necked flask and react, PET-PEG copolyester chain is synthesized using solution polycondensation method, after starting reaction, slowly add triethylamine (TEA) in flask and neutralize the generated hydrochloric acid, after reaction is completed, the generated amine salt is extracted with water, then the oil phase is collected, remove chloroform by distillation under reduced pressure, collect product and dry, then cool to room temperature after obtaining PET-PEG copolyester, under nitrogen atmosphere, PET-PEG and slightly excessive pyrimidone derivative UPy are added to flask and react, after reaction is completed, cool to room temperature, and UPy-PET-PEG molecular chain is synthesized.The application combines solution and interface polymerization synthesis method, and prepares biomimetic supramolecular multifunctional chain containing nitrogen-containing cyclic cation monomer.The synthesized supramolecular product is purified by methods such as suction filtration, extraction or rotary evaporation, then the synthesized supramolecular is dissolved with organic solvent, and a solution with different concentrations is prepared.PET fabric is used as substrate, the solution is applied to PET fabric by conventional wet finishing method (immersion, padding or spraying method), and finally the composite system of biomimetic supramolecular coating and PET fabric is baked and shaped by oven.

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