Sulfonated polyetheretherketone/amino-functionalized TiO2 hybrid membrane, as well as preparation and applications of hybrid membrane
A sulfonated polyether ether ketone, amino functionalization technology, applied in chemical instruments and methods, through membrane, membrane technology and other directions, can solve the problem of gas separation that has not been reported in literature, and achieves simple and controllable preparation process and improved strength. , the effect of promoting the transmission of CO2
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Embodiment 1
[0023] TiO with a particle size of about 300 nm 2 Functionalization of nanospheres. The process is as follows: add 0.6 g of TiO 2 Add to 300 ml of Tris-HCl solution containing dopamine of 2mg / ml and pH of 8.5, react for 24h at room temperature, centrifuge, wash and dry, dopamine-modified TiO 2 Microspheres; then 0.3g of dopamine-modified TiO 2 The microspheres were added to 12ml of polyethyleneimine solution with a mass fraction of 5%, reacted in an oil bath at 65°C for 24h, cooled, centrifuged, washed and dried with water and ethanol to obtain amino-functionalized TiO 2 Microspheres.
[0024] Weigh 0.6 g of sulfonated polyether ether ketone and 6 g of N,N-dimethylacetamide under 500 r / min magnetic stirring at room temperature and stir for 12 h to dissolve all of the sulfonated polyether ether ketone. The amino functionalized TiO prepared above 2 0.03 g of microspheres, add 4 g of DMAc, sonicate for 24 h, add to the above sulfonated polyether ether ketone solution, stop stirring a...
Embodiment 2
[0026] Weigh 0.6 g of sulfonated polyether ether ketone and 6 g of N,N-dimethylacetamide and stir at room temperature under 500 r / min magnetic stirring for 12 h to dissolve all the polymers. The amino functionalized TiO prepared in Example 1 2 0.06 g of microspheres, add 4g of DMAc, sonicate for 24h, add to the above sulfonated polyetheretherketone solution, stop stirring after 12h, filter with copper mesh, let stand for 2h to defoam, pour into clean glass petri dish (Φ100 mm), placed in an oven and dried at 60 ℃ and 80 ℃ respectively for 12 h to obtain a homogeneous film with a thickness of about 60 μm. Pure CO at room temperature and 1 bar 2 Penetration performance test, CO 2 The permeability coefficients are respectively 829 barrer (1 barrer=10 -10 cm 3 (STP) cm / (cm 2 s cmHg)), CO 2 / CH 4 The ideal selectivity is 39.31.
Embodiment 3
[0028] Weigh 0.6 g of sulfonated polyether ether ketone and 6 g of N,N-dimethylacetamide and stir at room temperature for 12 h under magnetic stirring at 500 r / min to dissolve all the polymers. The amino functionalized TiO prepared in Example 1 2 0.09 g microspheres, add 4g DMAc, sonicate for 24 hours, add to the above sulfonated polyether ether ketone solution, stop stirring after 12 hours, filter with copper mesh, let stand for 2 hours to defoam, and pour into a clean glass petri dish (Φ100 mm), placed in an oven, and dried at 60 ℃ and 80 ℃ for 12 h respectively, to obtain a homogeneous film with a thickness of about 60 μm. Pure CO at room temperature and 1 bar 2 Penetration performance test, CO 2 The permeability coefficients are 1253 barrer (1 barrer=10 -10 cm 3 (STP) cm / (cm 2 s cmHg)), CO 2 / CH 4 The ideal selectivity is 48.09.
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