Porous composite micro balls for cosmetics and preparation method for porous composite micro balls
A technology of porous composite microspheres and cosmetics, applied in the direction of cosmetic preparations, cosmetics, cosmetics, etc., can solve the problems of high toxicity of raw materials and environmental protection, and achieve the effect of low price, simple preparation method, and good amphiphilicity
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Embodiment 1
[0026] (1) In the first step, add 0.32g of initiator azobisisobutyronitrile into 31.85g of styrene monomer and 3.185g of butyl acrylate monomer to dissolve, take 63g of ethanol as a solvent, and adopt dispersion polymerization at 70°C The copolymerization reaction was initiated by the method to obtain polymer microspheres, which were washed successively with methanol, ethanol and deionized water, suction-filtered at room temperature, dried at 50°C for 24 hours under the condition of vacuum degree of -0.1MPa to obtain polymer microspheres, and set aside;
[0027] (2) In the second step, add 5 g of the polymer microspheres prepared in step (1) and 50 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 30° C. for 10 h, dilute with deionized water until the pH of the solution is in the range of 6 to 6.9 (As long as the solution is close to neutral, roughly measured with pH test paper, and compared with the pH test paper with naked eyes), centrifuge ...
Embodiment 2
[0031] (1) In the first step, add 1.274g of initiator azobisisobutyronitrile into 31.85g of styrene monomer and 0.32g of acrylic acid monomer to dissolve, take 70g of ethanol as a solvent, and initiate it by suspension polymerization at 75°C Copolymerization reaction to obtain polymer microspheres, washed with methanol, ethanol and deionized water in sequence, suction filtration at room temperature, drying at 50°C for 10 hours under vacuum condition of -0.1MPa to obtain polymer microspheres, set aside;
[0032] (2) In the second step, add 9 g of polymer microspheres prepared in step (1) and 60 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 50° C. for 7 hours, dilute with deionized water until the pH of the solution is in the range of 6 to 6.9 Centrifuge at 5000r / min for 30min, wash with ethanol and deionized water several times, filter at room temperature, and dry at 50°C for 12h under a vacuum of -0.1MPa to obtain amphiphilic sulfonated mi...
Embodiment 3
[0037] (1) In the first step, add 0.42g of initiator benzoyl peroxide into 21.045g of styrene monomer and 3.76g of methyl methacrylate monomer to dissolve, take 70g of ethanol as a solvent, and use a dispersion method at 65°C The polymerization method initiates a copolymerization reaction to obtain polymer microspheres, which are washed sequentially with methanol, ethanol and deionized water, suction filtered at room temperature, and dried at 50°C for 20 hours under a vacuum of -0.1MPa to obtain polymer microspheres for later use;
[0038] (2) In the second step, add 7 g of polymer microspheres prepared in step (1) and 40 g of concentrated sulfuric acid into the reactor, and after stirring and reacting at 60° C. for 4 hours, dilute with deionized water until the pH of the solution is between 6 and 6.9 Centrifuge at 5000r / min for 30min, wash with ethanol and deionized water several times, filter at room temperature, and dry at 50°C for 15h under a vacuum of -0.1MPa to obtain amp...
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