Polymer functional material as well as preparation method and application thereof
A functional material and polymer technology, applied in medical science, surgery, etc., can solve the problems of poor adhesion, medical device failure and failure, low hydrogel strength, etc., to reduce the risk of device damage, Young's modulus matching Good quality and strength
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[0024] The preparation method of polymer functional material provided by the invention comprises:
[0025] S1, providing a polymer containing a hydroxyl group, mixing the polymer with a first boron-containing coagulant, and reacting at a first temperature to obtain a polymer matrix, wherein the molecular chain of the polymer matrix contains the first boron Ester bond;
[0026] S2, providing a hydrogel precursor, mixing the hydrogel precursor with a second boron-containing coagulant and water, and reacting to obtain a hydrogel, wherein the molecular chain of the hydrogel contains the second boron Ester bond;
[0027] S3, coating the hydrogel on the polymer matrix, freezing and thawing at least once, so that the molecular chains of the hydrogel and the polymer matrix pass through the third borate Bond connection to obtain polymer functional materials.
[0028] In step S1, the polymer containing hydroxyl group includes hydroxyl-terminated polydimethylsiloxane (PDMS), hydroxyl-...
Embodiment 1
[0051] Commercially available hydroxyl-terminated PDMS (molecular weight: 10,000) was mixed with boric acid at a mass ratio of 6:4, and stirred evenly at room temperature. Put it into a mold and gradually heat it to 180° C., keep it for 1.5 hours, then cool it down to room temperature to obtain a polymer matrix of the desired shape.
[0052] Dissolve commercially available PVA (molecular weight 8000) in deionized water, then add boric acid, the mass ratio of PVA, deionized water and boric acid is 0.5:98.9:0.6, stir to dissolve and mix evenly to obtain a hydrogel, Save for later.
[0053] The hydrogel was coated on the surface of the polymer matrix with a thickness of 5 μm, then placed at -20°C for 12 hours and then thawed at 25°C for 3 hours, and repeated three times to obtain a polymer functional material.
Embodiment 2
[0055] Mix commercially available hydroxyl-terminated PDMS (molecular weight: 20,000) and borax at a mass ratio of 7.5:2.5, and stir evenly at room temperature. Put it into a mold and gradually heat it to 190° C., keep it for 1 hour, then cool it down to room temperature to obtain a polymer matrix of the desired shape.
[0056] Dissolve commercially available PAA (molecular weight 10000) in deionized water, then add boric acid, the mass ratio of PAA, boric acid and deionized water is 5:1:94, stir to dissolve and mix evenly to obtain a hydrogel, Save for later.
[0057] The hydrogel was coated on the surface of the polymer matrix with a thickness of 50 μm, then placed at -20°C for 12 hours and then thawed at 25°C for 3 hours, and repeated three times to obtain a polymer functional material.
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