A kind of cellulose-based composite hydrogel, its preparation method and its application in facial mask matrix
A composite hydrogel and hydroxyethyl cellulose technology, applied in pharmaceutical formulations, cosmetic preparations, cosmetic preparations, etc.
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Embodiment 1
[0056] Preparation of anionic porous nanospheres:
[0057] In parts by weight, 10 parts of styrene, 10 parts of divinylbenzene, 10 parts of methacryloyloxyethyltrimethylammonium chloride, 0.1 part of azobisisobutyronitrile, 5 parts of toluene, and 1 wt% KCl aqueous solution After the 2 parts are mixed, stir evenly, as the first phase;
[0058] Prepare an aqueous solution containing 1wt% of SPAN40 as the second phase;
[0059] Under the condition of stirring, add the second phase dropwise to the first phase, the volume ratio of the first phase and the second phase is 1:2, and disperse evenly. The obtained product is successively washed with ethanol and deionized water to remove unreacted raw materials, and dried under reduced pressure to obtain cationic porous microspheres.
[0060] Preparation of the mask:
[0061] Spare raw materials according to the following formula: plant extract 0.2%, tea polyphenol 0.5%, polypeptide 0.1%, hydroxyethyl cellulose sodium 0.4%, carbomer 0...
Embodiment 2
[0066] Preparation of anionic porous nanospheres:
[0067] In parts by weight, 15 parts of styrene, 15 parts of divinylbenzene, 12 parts of methacryloxyethyltrimethylammonium chloride, 0.3 parts of azobisisobutyronitrile, 10 parts of toluene, 5 wt% KCl aqueous solution After the 4 parts are mixed, stir evenly as the first phase;
[0068] Prepare an aqueous solution containing 1-1.5wt% SPAN40 as the second phase;
[0069] Under the condition of stirring, add the second phase to the first phase dropwise, the volume ratio of the first phase and the second phase is 1:3, and disperse evenly, then raise the temperature to 85°C and carry out the crosslinking reaction for 10h, the reaction The obtained product is successively washed with ethanol and deionized water to remove unreacted raw materials, and dried under reduced pressure to obtain cationic porous microspheres.
[0070] Preparation of the mask:
[0071] Spare raw materials according to the following formula: plant extract...
Embodiment 3
[0076] Preparation of anionic porous nanospheres:
[0077] In parts by weight, 12 parts of styrene, 12 parts of divinylbenzene, 11 parts of methacryloyloxyethyltrimethylammonium chloride, 0.2 parts of azobisisobutyronitrile, 7 parts of toluene, and 3 wt% KCl aqueous solution After the 3 parts are mixed, stir evenly, as the first phase;
[0078] Prepare an aqueous solution containing 1.2wt% of SPAN40 as the second phase;
[0079] Under the condition of stirring, add the second phase dropwise to the first phase, the volume ratio of the first phase and the second phase is 1:3, and disperse evenly, then raise the temperature to 80°C and carry out the crosslinking reaction for 8h, the reaction The obtained product is successively washed with ethanol and deionized water to remove unreacted raw materials, and dried under reduced pressure to obtain cationic porous microspheres.
[0080] Preparation of the mask:
[0081] Spare raw materials according to the following formula: plant ...
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