A kind of environment-friendly biocompatible porous film and preparation method thereof
A biocompatible, porous membrane technology, applied in the field of membrane materials, can solve the problems of poor recyclability, reduced performance, material waste, etc., and achieve the effects of high recyclability, stable performance and high efficiency
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Embodiment 1
[0026] Prepare an environmentally friendly biocompatible porous membrane, comprising the following steps:
[0027] (1) Weigh 80 parts of polylactic acid, 10 parts of acrylic acid, 2 parts of dibenzoyl peroxide, 50 parts of titanium dioxide powder, 10 parts of tourmaline powder, 5 parts of tricalcium phosphate, porogen chlorination Potassium 20 parts. The molecular weight of polylactic acid is 50,000; the particle size of tricalcium phosphate is ultrafine tricalcium phosphate of 2 to 3 μm; the particle size of tourmaline powder is 50nm; the particle size of titanium dioxide powder is 5nm.
[0028] (2) Add the polylactic acid weighed in step (1) into 240 parts of organic solvent tetrahydrofuran, and at the same time pass through nitrogen gas and stir, then heat to 60°C and reflux for 2 hours to dissolve, and obtain solution I.
[0029] (3) Add the acrylic acid and dibenzoyl peroxide weighed in the step (1) to the solution I prepared in the step (2) at the same time, and carry o...
Embodiment 2
[0033] Prepare an environmentally friendly biocompatible porous membrane, comprising the following steps:
[0034] (1) Weigh 100 parts of polylactic acid, 50 parts of acrylic acid, 10 parts of dibenzoyl peroxide, 100 parts of titanium dioxide powder, 30 parts of tourmaline powder, 20 parts of tricalcium phosphate, and 50 parts of porogen sucrose according to the required parts by weight. share. The molecular weight of polylactic acid is 200,000; the particle size of tricalcium phosphate is ultrafine tricalcium phosphate of 2 to 3 μm; the particle size of tourmaline powder is 2000nm; the particle size of titanium dioxide powder is 100nm.
[0035] (2) Add the polylactic acid weighed in step (1) into 200 parts of organic solvent dichloromethane, and at the same time pass in nitrogen gas and stir, and then heat to 80° C. and reflux for 6 hours to dissolve to obtain solution I.
[0036] (3) Add the acrylic acid and dibenzoyl peroxide weighed in the step (1) to the solution I prepa...
Embodiment 3
[0040] Prepare an environmentally friendly biocompatible porous membrane, comprising the following steps:
[0041] (1) Weigh 85 parts of polylactic acid, 20 parts of acrylic acid, 4 parts of dibenzoyl peroxide, 60 parts of titanium dioxide powder, 12 parts of tourmaline powder, 12 parts of tricalcium phosphate, and porogen alginic acid according to the required parts by weight. Sodium 25 parts. The molecular weight of polylactic acid is 80,000; the particle size of tricalcium phosphate is ultrafine tricalcium phosphate of 2-3 μm; the particle size of tourmaline powder is 100nm; the particle size of titanium dioxide powder is 30nm.
[0042](2) Add the polylactic acid weighed in step (1) into 170 parts of organic solvent tetrahydrofuran, and at the same time pass through nitrogen and stir, and then heat to 65 ° C and reflux for 3 hours to dissolve to obtain solution I.
[0043] (3) Add the acrylic acid and dibenzoyl peroxide weighed in the step (1) to the solution I prepared in...
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