Preparation method of hydrophilic anti-pollution plant particle blended membrane
A plant particle and anti-pollution technology, applied in the direction of chemical instruments and methods, membranes, membrane technology, etc., can solve the problems of complex preparation process of organic hydrophilic macromolecules, harm and limitation of inorganic particles to human body, etc., and achieve good hydrophilic anti-pollution Pollution performance, easy industrial implementation, and low equipment requirements
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Embodiment 1
[0021] 1) Preparation of plant granules: Boil papaya stems and leaves in boiling water for 2 hours, filter to remove impurities, dry at 80°C, crush the plants with a mixer, sieve out 100-mesh granules with a standard inspection sieve, filter, wash and dry to obtain spare plant granules ;
[0022] 2) Preparation of plant particle blend film: Dissolve 1.9 g of polyvinylidene fluoride powder in a mixture of 12.5 mL of dimethylacetamide and 1.3 g of polyvinylpyrrolidone, add 0.1 g of 100-mesh plant particles, and stir evenly at 70 °C , the solution was defoamed, the film was scraped at 60°C, the solvent was removed and dried to obtain a plant particle blend film.
[0023] In the comparison experiment, the contact angle between the original PVDF film and water without blending modification reached 89°, and the contact angle between the PVDF film and water after the blending modification in this example dropped to 65°, and the contact angle decreased rapidly with time. Only 20° to ...
Embodiment 2
[0025] 1) Preparation of plant granules: Boil palm stems and leaves in boiling water for 3 hours, filter to remove impurities, dry at 80°C, crush the plants with a mixer, sieve out 200-mesh granules with a standard inspection sieve, filter, wash and dry to obtain spare plant granules ;
[0026] 2) Preparation of plant particle blend film: Dissolve 1.9 g of polyvinylidene fluoride powder in a mixture of 12.5 mL of dimethylacetamide and 1.3 g of polyvinylpyrrolidone, add 0.1 g of 200-mesh plant particles, and stir well at 70 °C , the solution was defoamed, the film was scraped at 60°C, the solvent was removed and dried to obtain a plant particle blend film.
[0027] After testing, the contact angle between the PVDF membrane and water dropped to 55° after blending and modification in this example, and the contact angle dropped rapidly with time to only 17° in 150 seconds. Using bovine serum albumin (BSA) as a pollutant, the antifouling performance of the measured membrane is gre...
Embodiment 3
[0029] 1) Preparation of plant granules: Boil longan stems and leaves in boiling water for 3 hours, filter to remove impurities, dry at 80°C, crush the plants with a mixer, sieve out 400-mesh granules with a standard inspection sieve, filter, wash and dry to obtain spare plant granules ;
[0030] 2) Preparation of plant particle blend film: Dissolve 1.9 g of polyvinylidene fluoride powder in a mixture of 12.5 mL of dimethylacetamide and 1.3 g of polyvinylpyrrolidone, add 0.1 g of 400-mesh plant particles, and stir well at 70 °C , the solution was defoamed, the film was scraped at 60°C, the solvent was removed and dried to obtain a plant particle blend film.
[0031] After testing, the contact angle between the PVDF membrane and water dropped to 50° after blending and modification in this example, and the contact angle decreased rapidly with time, to only 15° in 150 seconds. Using bovine serum albumin (BSA) as a pollutant, the antifouling performance of the measured membrane i...
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