Cationic microspheres for treating papermaking white water and its preparation method and application
A papermaking white water, cation technology, applied in chemical instruments and methods, processing wastewater treatment, adsorption water/sewage treatment, etc., can solve problems such as shortage of raw materials, harsh operating conditions, pollution, etc. The effect of simple branch modification process and simple elution operation
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Embodiment 1
[0029] (1) Weigh 100g of polystyrene resin white balls, put them into dichloromethane to swell for 4 hours, then transfer to a G2 sand core funnel, wash and filter with tetrahydrofuran for 3 times, then wash and filter with distilled water for 3 times, and then wash and filter with anhydrous Wash and filter twice with ethanol and methanol, and finally dry in a vacuum oven at 40°C for 48 hours to obtain pretreated polystyrene white balls;
[0030] (2) Weigh 4.2g of the pretreated white ball obtained in step (1), add 60ml of anhydrous dichloromethane and 7.2g of acryloyl chloride, add 11.6g of anhydrous aluminum chloride at 30°C, and react under magnetic stirring After 4 hours, the product was successively washed and filtered with absolute ethanol, 1% dilute hydrochloric acid, distilled water, and methanol for 30 minutes, and finally the product was dried in a vacuum oven at 50°C for 48 hours to obtain a light yellow spherical powder, namely Polystyrene loaded acryloyl chloride ...
Embodiment 2
[0037] (1) The preparation method of polystyrene-supported acryloyl chloride microspheres is the same as (1)-(2) in Example 1.
[0038] (2) Weigh 0.2g of polystyrene microspheres loaded with acryloyl chloride obtained in step (2), add 4.7g of DMF to swell for 24 hours, then add 5.1g of methacryloyloxyethyltrimethylammonium chloride (The addition form is: an aqueous solution with a mass percentage concentration of 72%). Add 0.16ml (25g / L) of ammonium persulfate solution after nitrogen gas for 30 minutes, heat up to 60°C, react for 4 hours, then heat up to 80°C, and keep warm for 3 hours, then wash and filter the product with distilled water, absolute ethanol, and methanol for 30 minutes, and finally put the product in a vacuum drying oven at 50°C for 48 hours to obtain a spherical powder with a transparent light yellow surface, that is, cationic polyphenylene Ethylene microspheres.
[0039] The test results of the cationized polystyrene microspheres prepared in this example ar...
Embodiment 3
[0041] (1) The preparation method of polystyrene-supported acryloyl chloride microspheres is the same as (1)-(2) in Example 1.
[0042] (2) Weigh 0.2g of polystyrene microspheres loaded with acryloyl chloride obtained in step (2), add 1.4g of DMF to swell for 24 hours, then add 5.1g of methacryloyloxyethyltrimethylammonium chloride (The addition form is: an aqueous solution with a mass percentage concentration of 72%). Add 0.16ml (25g / L) of ammonium persulfate solution after nitrogen gas for 30 minutes, heat up to 60°C, react for 4 hours, then heat up to 80°C, and keep warm for 3 hours, then wash and filter the product with distilled water, absolute ethanol, and methanol for 30 minutes, and finally put the product in a vacuum drying oven at 50°C for 48 hours to obtain a spherical powder with a transparent light yellow surface, that is, cationic polyphenylene Ethylene microspheres.
[0043] The test results of the cationized polystyrene microspheres prepared in this example ar...
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