A method for preparing hydrophilic nano-hybrid reinforced hollow fiber membrane
An enhanced, hydrophilic technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve the problems of inorganic nanomaterials that are difficult to disperse evenly
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Embodiment 1
[0074] (1) Preparation of alkynylated polyhydroxyethyl methacrylate (PHEMA)
[0075] Add 50ml of solvent N,N-dimethylformamide (DMF) in the there-necked flask, then 5g polyhydroxyethyl methacrylate (PHEMA, weight-average molecular weight is 20,000), 5g catalyst 4-dimethylaminopyridine ( DMAP) and 6g of 4-pentynoic acid were added into a three-necked flask, put into an ice bath at 0°C for reaction, and passed into nitrogen protection; after the reaction was carried out for 30min, 7g of dehydrating agent dicyclohexylcarbodiimide (DCC) Dissolve it in 10ml of solvent N,N-dimethylformamide (DMF), add it into a three-necked flask within 60min, and stir at room temperature for 15h.
[0076] Afterwards, the reaction solution was washed with pure water for 4 times, and then suction-filtered to obtain alkynylated polyhydroxyethyl methacrylate (PHEMA), which was set aside.
[0077] (2) Thiolated nano-SiO 2 preparation of
[0078] Weigh 0.5g of nano-SiO 2 Disperse in a three-necke...
Embodiment 2
[0095] (1) Preparation of alkynylated polyhydroxyethyl methacrylate (PHEMA)
[0096] Add 70ml of solvent N,N-dimethylacetamide (DMAC) to the three-necked flask, then mix 6g of polyhydroxyethyl methacrylate (PHEMA, with a weight average molecular weight of 40,000), 4g of catalyst N-hydroxyphthalamide Amide imine (NOP) and 7g of 4-pentynoic acid were added to a three-necked flask, put into an ice bath at 0°C for reaction, and passed through nitrogen protection; after the reaction was carried out for 30min, 8g of dehydrating agent dicyclohexyl Amine (DCC) was dissolved in 20ml solvent N,N-dimethylacetamide (DMAC), and added to a three-necked flask within 70min, and stirred at room temperature for 12h.
[0097] Afterwards, the reaction solution was washed 5 times with pure water, and then suction-filtered to obtain alkynylated polyhydroxyethyl methacrylate (PHEMA), which was set aside.
[0098] (2) Thiolated nano-SiO 2 preparation of
[0099] Weigh 0.7g of nano-SiO 2 Dispe...
Embodiment 3
[0115] (1) Preparation of alkynylated polyhydroxyethyl methacrylate (PHEMA)
[0116] Add 60ml of solvent N,N-dimethylformamide (DMF) to the three-necked flask, then add 4g of polyhydroxyethyl methacrylate (PHEMA, with a weight average molecular weight of 30,000), 6g of catalyst N-hydroxyphthalamide Add imide (NOP) and 8g of 4-pentynoic acid into a three-necked flask, put it into an ice bath at 0°C for reaction, and pass into nitrogen protection; after the reaction was carried out for 30min, 6g of dehydrating agent dichloroethane (EDC ) was dissolved in 20ml solvent N,N-dimethylformamide (DMF), and added into a three-necked flask within 55min, and stirred at room temperature for 75h.
[0117] Afterwards, the reaction liquid was washed with pure water for 3 times, and then suction-filtered to obtain alkynylated polyhydroxyethyl methacrylate (PHEMA), which was set aside.
[0118] (2) Thiolated nano-SiO 2 preparation of
[0119] Weigh 0.3g of nano-SiO 2 Disperse in a three...
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