Green and environment-friendly hair shaping and finishing agent as well as preparation method and application thereof
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A hair styling, green and environmentally friendly technology, applied in the field of beauty and hairdressing, can solve the problem of low CQDsN- doping content, and achieve high biocompatibility and high toxicity
Active Publication Date: 2019-04-26
ANKANGDEMEI ZHONGSHAN NANO TECH CO LTD
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Problems solved by technology
There are few reports on effective heterodoping methods for CQDs. Due to the high solubility of the inorganic precursors of dopants, the conventional
Method used
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Embodiment 1
[0030] (1) Dissolve 3 g of citric acid, 1 g of chlorophyll a and 0.1 g of mercaptoethylamine in 40 mL of pure water, then add 0.01 g of sodium selenite, stir and dissolve to obtain a mixed solution;
[0031] (2) Transfer the mixed solution to a 50mL polytetrafluoroethylene liner, put the liner into a stainless steel reaction kettle, put it in an oven for hydrothermal reaction at 140°C for 240min; take out the solution when the oven temperature drops to room temperature, After centrifugation at 8000r / min for 20min, the supernatant was dialyzed with a 200Da dialysis bag for 2 days and then freeze-dried to obtain the green hair styling agent S,Se-CQDs.
Embodiment 2
[0033](1) Dissolve 4 g of citric acid, 2 g of chlorophyll a and 0.5 g of mercaptoethylamine in 40 mL of pure water, then add 0.05 g of sodium selenite, stir and dissolve to obtain a mixed solution;
[0034] (2) Transfer the mixed solution to a 50mL polytetrafluoroethylene liner, put the liner into a stainless steel reaction kettle, put it in an oven for hydrothermal reaction at 150°C for 150min; take out the solution when the oven temperature drops to room temperature, After centrifugation at 8000r / min for 20min, the supernatant was dialyzed with a 200Da dialysis bag for 2 days and then freeze-dried to obtain the green hair styling agent S,Se-CQDs.
Embodiment 3
[0036] (1) Dissolve 6 g of citric acid, 3 g of chlorophyll a and 0.8 g of mercaptoethylamine in 40 mL of pure water, then add 0.1 g of sodium selenite, stir and dissolve to obtain a mixed solution;
[0037] (2) Transfer the mixed solution to a 50mL polytetrafluoroethylene liner, put the liner into a stainless steel reaction kettle, put it in an oven for hydrothermal reaction at 200°C for 120min; take out the solution when the oven temperature drops to room temperature, After centrifugation at 8000r / min for 20min, the supernatant was dialyzed with a 200Da dialysis bag for 2 days and then freeze-dried to obtain the green hair styling agent S,Se-CQDs.
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Abstract
The invention belongs to the field of cosmetology and hairdressing and discloses a green and environment-friendly hair shaping and finishing agent as well as a preparation method and application thereof. The hair shaping and finishing agent is prepared from the following raw materials in parts by mass: 3-6 parts of citric acid, 1-3 parts of chlorophyll a, 0.1-0.8 part of mercaptoethylamine and 0.01-0.1 part of sodium selenite. The preparation method comprises the following steps of: respectively dissolving the citric acid and the chlorophyll a in pure water, mixing, then adding the mercaptoethylamine and the sodium selenite, and dissolving to obtain a mixed solution; transferring the mixed solution into a polytetrafluoroethylene lining, putting the lining into a stainless steel reaction kettle, putting the stainless steel reaction kettle in a drying oven for carrying out hydrothermal reaction for 120-240 minutes at 140-200 DEG C; taking the solution out after the temperature in the drying oven is reduced to room temperature, centrifuging for 10-30 minutes under the condition of 4000-10000 r/min, taking supernatant liquid, dialyzing the supernatant liquid for 2-4 days by using a 200Da dialysis bag, and then carrying out freeze-drying to obtain the environment-friendly hair shaping and finishing agent.
Description
technical field [0001] The invention belongs to the field of beauty and hairdressing, and in particular relates to a green and environment-friendly hair styling finishing agent, its preparation method and application. Background technique [0002] In order to explore whether heteroatom-doped carbon quantum dots CQDs have antibacterial activity and the relationship between antibacterial activity and the surface structure of CQDs, Travlou et al. used poly(4-styrene sodium sulfonate) or polyvinylpyrrolidone as sulfur or nitrogen sources, respectively. , S-CQDs and N-CQDs were synthesized by hydrothermal method, and the killing ability of the two CQDs on Bacillus subtilis and Escherichia coli was explored by qualitative disk diffusion method and MIC quantitative test. It was found that compared with S-CQD, N-CQD had higher bactericidal activity, the antibacterial activity of N-CQD was mainly related to its positive surface charge, and the antibacterial activity of S-CQD was main...
Claims
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