Method for preparing cationic polyacrylamide emulsion in aqueous dispersion polymerization manner
A technology of polyacrylamide and dispersion polymerization, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of reduced particle swelling, complex demulsification process, high production cost, etc., and achieve good stability Sexuality and fluidity, avoid mutual aggregation, fast dissolution effect
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[0049] Example 1
[0050] 11.88g of acrylamide, 7.85g of methacryloyloxyethyltrimethylammonium chloride (80wt%), polymethacryloyloxyethyltrimethylammonium chloride aqueous solution (16wt%, molecular weight 1.09×10 6 g / mol) 16.875g, ammonium sulfate 35.2g, disodium EDTA 0.025g, deionized water 44.37g, mixed and stirred to form a homogeneous solution, poured into a homogeneous solution equipped with a mechanical stirrer, a condenser, a thermometer and a nitrogen conduit. In a 250ml four-necked flask, stir at a constant speed of 350rpm in a 56°C constant temperature water bath, and pass nitrogen for 30min, then use a syringe to add 0.7ml of 0.5wt% graphene oxide aqueous solution (required when preparing 0.5wt% graphene oxide aqueous solution). Ultrasonic dispersion for 30min to dissolve graphene oxide evenly in the aqueous solution) and 1.4ml of 0.5wt% ammonium persulfate aqueous solution were injected into the reaction system, the reaction continued until the system became visco...
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[0052] Example 2
[0053] 11.88g of acrylamide, 7.85g of acryloyloxyethyltrimethylammonium chloride (80wt%), polyacryloxyethyltrimethylammonium chloride aqueous solution (16wt%, molecular weight 1.39×10 6 g / mol) 18.00g, ammonium sulfate 37.2g, disodium EDTA 0.025g, deionized water 45.045g, mixed and stirred to form a homogeneous solution, poured into a homogeneous solution equipped with a mechanical stirrer, a condenser, a thermometer and a nitrogen conduit. In a 250ml four-necked flask, stir at a constant speed of 400rpm in a 56°C constant temperature water bath, and pass nitrogen for 30min, then inject 0.7ml of 0.5wt% graphene oxide aqueous solution and 1.4ml of 0.5wt% ammonium persulfate aqueous solution with a syringe. In the reaction system, the reaction was continued until the system became viscous. After 4h, 0.3ml of 0.5wt% graphene oxide aqueous solution and 0.6ml of 0.5wt% ammonium persulfate aqueous solution were added again. After 12h of reaction, 2.0g of remaining ...
Example Embodiment
[0054] Example 3
[0055] 11.88 g of acrylamide, 3.93 g of methacryloyloxyethyltrimethylammonium chloride (80 wt%), 3.93 g of acryloyloxyethyltrimethylammonium chloride (80 wt%), polymethacryloyloxy Ethyltrimethylammonium chloride aqueous solution (16wt%, molecular weight 1.61×106g / mol) 18.00g, ammonium sulfate 37.2g, disodium EDTA 0.025g, deionized water 45.045g were mixed and stirred to form a homogeneous solution, Pour it into a 250ml four-necked flask equipped with a mechanical stirrer, a condenser tube, a thermometer and a nitrogen conduit, stir at a constant speed of 350rpm in a 50°C constant temperature water bath, and pass nitrogen for 30min, then use a syringe to add 0.7ml of 0.5wt% Graphene oxide aqueous solution and 2.1ml of 0.5wt% ammonium persulfate aqueous solution were injected into the reaction system, and the reaction continued until the system became viscous. After 3 hours, 0.3ml of 0.5wt% graphene oxide aqueous solution and 0.9ml of 0.5wt% The aqueous solut...
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