To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mec...To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mechanical resistance against combing of wet and dry hair,scanning electron microscopy(SEM).According to the analysis of differential scanning calorimetry(DSC),the testing sample has repairing effect on the hairα-keratin damage induced by heated blowing.According to the pictures of scanning electron microscopy(SEM),The test results indicate the repairing or resisting thermal damage effects induced by hair drier of prinsepia utilis oil.By comparison with the blank control group,the strength and work of dry comb and wet comb were significantly reduced in the samples tested with 2%prinsepia utilis oil concentration(P﹤0.05).This indicates the testing sample has the efficacy to improve the easiness of combing and anti-tangle.And friction work is significantly reduced This indicates the smoothing efficacy of the testing sample.and the hair scales status is better;this indicates hair scales repairing efficacy of testing sample.Conclusion:PRINSEPIA UTILIS OIL has the effect of repairing hair scales,resisting thermal damage caused by hair dryer,easy to comb,anti-tangle,smoothing.展开更多
The preparation and characterization of homogeneous and colorless ionic liquid analogs（ILAs） containing choline chloride（ChC1）, malonic acid and bismuth chloride were investigated. The structure of the above mixtu...The preparation and characterization of homogeneous and colorless ionic liquid analogs（ILAs） containing choline chloride（ChC1）, malonic acid and bismuth chloride were investigated. The structure of the above mixture was preliminarily analyzed, and then the physicochemieal properties including viscosity, conductivity and density were investigated as functions of temperature and composition. Additionally, the thermal stability of the ILAs and the electrochemical behavior of Bi3＋ ions in the medium were studied. Structure analysis reveals that the synthesis of deep eutectic solvents（DESs） is closely related to the formation of hydrogen bonds between malonic acid and ChC1, with their viscosity, conductivity and density being greatly dependent on the temperature and composition. Thermo- gravimetric analysis demonstrates that the ILAs are very stable between room temperature and 398.15 K. And the electrochemical experiments indicate that the bismuth films can be successfully deposited from this ILAs and the deposition mechanism of bismuth is a rather irreversible process. The surface morphology of bismuth films deposited on Cu substrates was very compact and smooth. Thus, ChCl-malonic acid DESs were shown to be a good alternative to aqueous solvents for various deposition-related applications.展开更多
文摘To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mechanical resistance against combing of wet and dry hair,scanning electron microscopy(SEM).According to the analysis of differential scanning calorimetry(DSC),the testing sample has repairing effect on the hairα-keratin damage induced by heated blowing.According to the pictures of scanning electron microscopy(SEM),The test results indicate the repairing or resisting thermal damage effects induced by hair drier of prinsepia utilis oil.By comparison with the blank control group,the strength and work of dry comb and wet comb were significantly reduced in the samples tested with 2%prinsepia utilis oil concentration(P﹤0.05).This indicates the testing sample has the efficacy to improve the easiness of combing and anti-tangle.And friction work is significantly reduced This indicates the smoothing efficacy of the testing sample.and the hair scales status is better;this indicates hair scales repairing efficacy of testing sample.Conclusion:PRINSEPIA UTILIS OIL has the effect of repairing hair scales,resisting thermal damage caused by hair dryer,easy to comb,anti-tangle,smoothing.
基金Supported by the Natural Science Foundation of Tianjin City, China（No. 15JCQNJC05900）.
文摘The preparation and characterization of homogeneous and colorless ionic liquid analogs（ILAs） containing choline chloride（ChC1）, malonic acid and bismuth chloride were investigated. The structure of the above mixture was preliminarily analyzed, and then the physicochemieal properties including viscosity, conductivity and density were investigated as functions of temperature and composition. Additionally, the thermal stability of the ILAs and the electrochemical behavior of Bi3＋ ions in the medium were studied. Structure analysis reveals that the synthesis of deep eutectic solvents（DESs） is closely related to the formation of hydrogen bonds between malonic acid and ChC1, with their viscosity, conductivity and density being greatly dependent on the temperature and composition. Thermo- gravimetric analysis demonstrates that the ILAs are very stable between room temperature and 398.15 K. And the electrochemical experiments indicate that the bismuth films can be successfully deposited from this ILAs and the deposition mechanism of bismuth is a rather irreversible process. The surface morphology of bismuth films deposited on Cu substrates was very compact and smooth. Thus, ChCl-malonic acid DESs were shown to be a good alternative to aqueous solvents for various deposition-related applications.
