Porous resin with surface hydrophily
A porous resin and hydrophilic technology, applied in the fields of alkali metal oxides/hydroxides, inorganic chemistry, blood circulation treatment, etc., can solve the problems of thick coating, easy peeling off of the coating, and difficulty in large-scale production, and achieve Good blood compatibility, simple synthesis method, low damage effect
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Embodiment 1
[0012] Preparation of polyvinyl alcohol (I) containing double bonds: 1 gram of polyvinyl alcohol (the degree of polymerization is 500 and the degree of hydrolysis is 99%) is dissolved in 15 milliliters of dimethyl sulfoxide, and then 0.2 gram of 4-dimethylamino Pyridine and 2 g of N,N-diisopropylcarbodiimide, and finally 0.6 g of acrylic acid were added, and stirred at room temperature for 24 hours. The reaction solution was added dropwise to 150 milliliters of acetone. During the dropwise addition, the mixture was continuously stirred, and a precipitate was formed. The precipitate was collected by filtration and vacuum-dried to obtain polyvinyl alcohol (I) with a double bond. The degree of substitution [n / (m+n)] was 15.5%.
Embodiment 2
[0014] The preparation that contains double-bond polyvinyl alcohol (I): 1 gram of polyvinyl alcohol (the degree of polymerization is 1700 and the degree of hydrolysis is 99%) is dissolved in 15 milliliters of dimethyl sulfoxide, then adds 0.2 gram of 4-dimethylamino Pyridine and 2 g of N,N-diisopropylcarbodiimide, and finally 0.8 g of acrylic acid were added, and stirred at room temperature for 24 hours. The reaction solution was added dropwise to 150 milliliters of acetone. During the dropwise addition, the mixture was continuously stirred, and a precipitate was formed. The precipitate was collected by filtration and vacuum-dried to obtain polyvinyl alcohol (I) with a double bond. The degree of substitution [n / (m+n)] was 10.5%.
Embodiment 3
[0016] Preparation of polyvinyl alcohol (II) containing double bonds: 2 grams of polyvinyl alcohol (the degree of polymerization is 200 and the degree of hydrolysis is 99%) is dissolved in 15 milliliters of dimethyl sulfoxide, then add 0.1 gram of 4-dimethylamino Pyridine and 2 g of N, N-diisopropylcarbodiimide, and finally 0.5 g of methacrylic acid were added, and stirred at room temperature for 24 hours. The reaction solution was added dropwise into 150 ml of acetone, and during the dropwise addition, stirring was continued, and a precipitate formed, which was collected by filtration, dried in vacuo, and polyvinyl alcohol (II) with a double bond was obtained. The degree of substitution [n / (m+n)] was 5.5%.
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