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    22 February 2015, Volume 45 Issue 2 Previous Issue    Next Issue
    Basicresearc
    Preparation and properties of organo-montmorillonites modified separately with quaternary ammonium surfactant and Gemini quaternary ammonium surfactant
    SUN Chen-ya, GAO Yan-li, FANG Yun, QI Li-yun, JIANG Cui-cui
    2015, 45 (2):  61-65.  doi: 10.13218/j.cnki.csdc.2015.02.001
    Abstract ( 282 )   PDF (1498KB) ( 335 )  
    A series of organo-montmorillonite was prepared separately with cetyltrimethylammonium bromide (CTAB) and Gemini surfactant 1,2-bis(cetyldimethylammonio)ethane dibromide (16-2-16) as intercalation reagent on montmorillonite.Adsorption isotherms of the two kinds of surfactant on the montmorillonite were measured and the interlayer structure as well as surface structure of the organo-montmorillonites were characterized by FTIR,XRD and SEM.Performance of the two kinds of organo-montmorillonite with respect to adsorption of phenol in aqueous solution were investigated.Results showed that the maximum adsorption amount of both 16-2-16 and CTAB on montmorillonite are equivalent,but the interlayer structure of the two kinds of organo-montmorillonite is remarkably different.Two kinds of mechanism,the partition adsorption and the surface adsorption,exist in the process of adsorption of phenol in aqueous solution.The action of partition adsorption of the 16-2-16-montmorillonite is significantly greater than that of the CTAB-montmorillonite.
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    Performance of foam formed by interfacially active SiO2 nanoparticles
    LIU Ling-ling, CHEN Zhi-ping, HUANG Jian-ping, HAO Ya-juan, YANG Heng-quan
    2015, 45 (2):  66-71.  doi: 10.13218/j.cnki.csdc.2015.02.002
    Abstract ( 274 )   PDF (6385KB) ( 336 )  
    Interfacially active SiO2 material (SN-C8-n,n=0.3,0.6,0.9 and 1.2) was prepared by functional modification of SiO2 nano-particles (SN) with n-octyltrimethoxysilane,and then the material was used as a foaming agent to stabilize the foam.Effects of dosage of coupled silane,dosage of SN-C8-0.6,mass concentration of NaCl and temperature on the performance of the foam were investigated.Results showed that,when the dosage of silane coupled onto the SN is 0.6 mmol/g and 0.2 g SN-C8-0.6 is added into 2 mL of NaCl solution with mass concentration of 0.05 g/mL,best foam performance with stable time of 72 h under 25 ℃ can be resulted.
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    Lectureofscienceandtechnolog
    Performance and applications of surfactants (ⅪⅤ) Wetting effect of surfactants and its applications
    TAN Ting-ting, HAO Shan-shan, ZHAO Li, XU Bao-cai
    2015, 45 (2):  72-75.  doi: 10.13218/j.cnki.csdc.2015.02.003
    Abstract ( 312 )   PDF (901KB) ( 546 )  
    Based on a brief introduction of wetting,the mechanism and way of measurement of surfactant wetting power were described.Then,the applications of the wetting effect of surfactants in the fields of textile industry,paper industry,agriculture,oil exploration and coal industry were summarized.Finally,the development outlook of surfactant wetting effect was prospected.
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    Developmentandapplicatio
    Synthesis and properties of zwitterionic Gemini surfactant
    LÜ Bin, GAO Jian-jing, MA Jian-zhong, FAN Qian-qian, WANG Hong-di
    2015, 45 (2):  76-80.  doi: 10.13218/j.cnki.csdc.2015.02.004
    Abstract ( 310 )   PDF (870KB) ( 378 )  
    Oleyl monoethanolamide was synthesized by oleic acid and monoethanolamine through two steps.Then the oleyl monoethanolamide was stepwise phosphorylated and quarternarized with phosphorus oxychloride and cetyl dimethyl amine to synthesis of the product zwitterionic Gemini surfactant.Acid value and amine value were used as examination indices for synthesis conditions of oleyl monoethanolamide.Based on single factor tests results the suitable conditions were identified as:1 mol oleic acid and 0.8 mol monoethanolamine reacts at temperature of 160 ℃ for 5 h;then reduce the temperature to 80 ℃ and make up 0.25 mol of monoethanolamine for 3 h.The suitable preparing conditions for the product zwitterionic Gemini surfactant using emulsifying power and wetting power as examination indices were identified as:1 mol oleyl monoethanolamide and 0.7 mol POCl3 reacts under temperature of 0 ℃ for 4 h;then 0.75 mol cetyl dimethyl amine is added at 65 ℃ for 18 h.The cmc of the product Gemini surfactant is 7.88×10-4 mol/L;stable time of emulsified liquid achieves 680 s;wetting time is 35 s.
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    Effect of branching degree of hydrophobic chain on performance of sodium succinic acid ester sulfonate series surfactant
    YU Hong-mei, HUA Ping, YE Jun, FANG Lüe-tao
    2015, 45 (2):  81-84.  doi: 10.13218/j.cnki.csdc.2015.02.005
    Abstract ( 319 )   PDF (857KB) ( 424 )  
    A series of sodium hexyl and octyl succinic acid ester sulfonate (SS) and a series of sodium bis-hexyl and bis-octyl Gemini succinic acid ester sulfonate (GSS) were synthesized.The relationship between the performances,such as permeability,emulsification,resistance to hard water and the critical micelle concentration,and the branching degree of the hydrophobic chain were mainly investigated.Results showed that,for the series of hexyl SS and hexyl GSS,the changing tendency of the emulsification and the resistance to hard water are same as the change of branching degree of the hydrophobic chain.When the spacer length is less than the equilibrium separation of the hydrophilic groups,trends of change of the critical micelle concentration of the hexyl GSS and the SS are same with the branching degree of the hydrophobic chain,and when the spacer length is longer than the equilibrium separation,the changing tendency is on the contrary.As the change of the branching degree of the hydrophobic chain of the octyl SS and octyl GSS,change of the resistance to hard water and the critical micelle concentration is in same direction,while the permeability changes contrarily.The emulsification changes differently.
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    Modification research of the effect of coupling agent on surface of nano barium sulfate
    LIU Yu-min, LIU Yue
    2015, 45 (2):  85-89.  doi: 10.13218/j.cnki.csdc.2015.02.006
    Abstract ( 360 )   PDF (861KB) ( 459 )  
    Nano barium sulfate was modified with the wet reaction method.Effects of variety of the modifying agent,dosage of the modifying agent,particle size of the nano barium sulfate,modification time,modification temperature and modification speed on the activation degree of the modified nano barium sulfate were investigated.Using infrared spectrometer and thermogravimetric analyzer,the coating condition of modified nano barium sulfate was characterized.Experimental results showed that coupling agent of organic titanate UP-801 is the suitable modifying agent;modification temperature is 80 ℃;dosage of modifying agent is 5%;the modification time is 30 min;modifying rotational speed is 7 000 r/min.Modification of nano barium sulfate suspension with partical size of 34 nm,95.76% activation degree of the nano barium sulfate powder can be acquired.
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    Inhibitory effect of extract from lavender flower on the tyrosinase activity
    LUO Bi, LI Guo-zhu, WANG Li-jun, MENG Qing-yan, LU Ya-ling, LIU Wen-jie
    2015, 45 (2):  90-93.  doi: 10.13218/j.cnki.csdc.2015.02.007
    Abstract ( 275 )   PDF (958KB) ( 389 )  
    Dried flower of lavender was used as raw material and it was extracted with 70% (volume fraction) ethanol.The extract was concentrated to concrete and dispersed in water.Then the dispersion was further extracted with petroleum ether,chloroform,ethyl acetate and n-butanol successively.The extracts from the petroleum ether,chloroform,ethyl acetate and n-butanol as well as the water phase raffinate were assayed for tyrosinase inhibitory effects using L-DOPA as substrate.Results showed that the water extract demonstrates significant inhibitory effects on tyrosinase activity.The IC50 value is 0.96 g/L.Kinetic study showed that the inhibitory mechanism of water-soluble extract is reversible,and the inhibitory type is the linear mixed-type inhibition.The inhibition constants of the free enzyme and the enzyme-substrate complex were 3.00 and 12.00 g/L,respectively.
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    Molecular weight,hygroscopicity and moisturizing performance of polysaccharide from Rhizoma Bletillae
    KONG Ling-shan, YU Ling, HU Guo-sheng, CUI Shu-mei, WANG Yi-li
    2015, 45 (2):  94-98.  doi: 10.13218/j.cnki.csdc.2015.02.008
    Abstract ( 514 )   PDF (931KB) ( 450 )  
    Crude polysaccharide was prepared by hot water extraction from Rhizoma Bletillae followed by settlement in ethanol aqueous solution.The crude polysaccharide was purified with chromatograph columns Sephadex G-200 and Sephadex G-25.Chemical structure and molecular weight of the purified polysaccharide was analyzed and detected by FTIR analysis and molecular weight test using High Performance Size Exclusion Chromatography Multi-angle Laser Light Scattering method.Hygroscopicity and moisturizing performance of the polysaccharide product were studied.Skin moisturizing test was evaluated by adding the polysaccharide product to cosmetic cream formulations.FTIR showed that the polysaccharide product belongs to pyranose type and contains mannose.Mw and Mn of the polysaccharide product were measured as 9.545×104 g/mol and 7.297×104 g/mol respectively.Under atmospheric condition of RH 43%,maximum hygroscopicity of the polysaccharide product achieves 6.0%,and its moisturizing ratio achieves 88.8%.Under atmospheric condition of RH 81%,maximum hygroscopicity of the polysaccharide product reaches 99.0%,and its moisturizing ratio reaches 105.5%.The results of skin moisture test showed that the polysaccharide product has good moisturizing effect.
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    Extraction of Ampelopsis grossedentata seed oil by aqueous enzymatic method and its microencapsulation
    WANG Li-jun
    2015, 45 (2):  99-102.  doi: 10.13218/j.cnki.csdc.2015.02.009
    Abstract ( 262 )   PDF (839KB) ( 318 )  
    Ampelopsis grossedentata seed oil was extracted from Ampelopsis grossedentata seed as raw material by aqueous enzymatic method.Process conditions were identified by single factor experiment and response surface methodology.Results showed that the optimum extraction conditions of Ampelopsis grossedentata seed oil are as follows:ratio of solution to raw material (mL/g),12.6;dosage of neutral protease,1.4%;enzymolysis temperature,52.0 ℃;enzymolysis time,3.2 h.Extraction yield of Ampelopsis grossedentata seed oil reaches 10.30%.With protein isolated from soybean and malt dextrin as the wall materials,the microencapsulation conditions of Ampelopsis grossedentata seed oil were examined by orthogonal experiment.Results showed that the optimum microencapsulation conditions are as follows:mas fraction of wall material,13%;mass ratio of core material to wall material,1∶6;spray dryer inlet air temperature and outlet air temperature,125 and 62 ℃ respectively;homogenizing pressure,28 MPa.Under these conditions,microencapsulation ratio of Ampelopsis grossedentata seed oil achieves 92.3%.
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    Efficacy of Tricholoma matsutake extract for anti-senility of human skin
    XU Lin, ZHANG Wei-qiang, CHEN Lai-cheng, CHEN Yu-yu, WEN Wen-zhong, HU Jian-qiang
    2015, 45 (2):  103-106.  doi: 10.13218/j.cnki.csdc.2015.02.010
    Abstract ( 424 )   PDF (856KB) ( 413 )  
    Efficacy of Tricholoma matsutake extract (TME) for anti-senility of human skin were examined via experiments for scavenging of hydroxyl free radicals and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radicals as well as experiment for non-enzymatic glycosylation inhibition.Results indicated that TME shows good scavenging efficacy on hydroxyl free radicals and DPPH free radicals as well as good inhibition effect for the non-enzymatic glycosylation,and the effects is closely related with the content of TME in the reaction mixture.With 4% of TME volume fraction adopted,hydroxyl free radicals scavenging ratio reaches 89.6%,and with 25% TME volume fraction adopted,DPPH free radicals scavenging ratio reaches 96.4%.Moreover,non-enzymatic glycosylation inhibition ratio can reach 91.5% with 20.0% TME volume fraction adopted and culturing for 14 d.
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    Influence of potassium permanganate dosage on preparation of sclareolide and ambradiol
    LI Li-hui, LÜ Yan-yu, YANG Shao-xiang, LIU Yong-guo, TIAN Hong-yu
    2015, 45 (2):  107-109.  doi: 10.13218/j.cnki.csdc.2015.02.011
    Abstract ( 383 )   PDF (816KB) ( 352 )  
    Sclareolide was synthesized via potassium permanganate oxidation with sclareol as starting material.Besides,ambradiol was synthesized via potassium permanganate oxidation with sclareol as starting material and followed by lithium aluminum hydride reduction.Both the two products were characterized by IR,1HNMR and 13CNMR.Effect of KMnO4 dosage on the preparation of sclareolide and ambradiol was examined.Results showed that,based on 25~30 ℃ of reaction temperature for 5 h,when potassium permanganate dosage is n(sclareol)∶n(KMnO4)=1∶5.6,yield of sclaeolide achieves 38.0% and that of ambradiol achieves 22.5%.
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    Review
    Progress of microbiological detection technology of cosmetics
    WEN Xia, YANG Xiu-jiang, XIE Xiao-bao
    2015, 45 (2):  110-114.  doi: 10.13218/j.cnki.csdc.2015.02.012
    Abstract ( 372 )   PDF (858KB) ( 1107 )  
    The status of the microbial contamination in cosmetics was briefed.Improvements of traditional testing methods for cosmetic microorganisms as well as the modernized bio-technologies for testing microorganism in cosmetics,including rapid test strip,polymerase chain reaction (PCR),ATP bioluminescence detection,electrical impedance,fluorescent photoelectric method and microbial volatile organic compounds (MVOCs) detection method were summarized emphatically in detail.The simple,quick and accurate modern bio-technological methods were proposed as the core concept and the development trend of the cosmetic microbiological testing.
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    Analyticalmethodsandtestin
    Determination of 2,4,5,6-tetraaminopyrimidine sulfate in hair dye by ultra high performance liquid chromatography- tandem mass spectrometry
    OUYANG Li-qun, LIN Qin, WANG Zheng, LIU Fei, DAI Ming, CHEN Yan-kai, ZHENG Xiao-yan
    2015, 45 (2):  115-120.  doi: 10.13218/j.cnki.csdc.2015.02.013
    Abstract ( 248 )   PDF (813KB) ( 349 )  
    A method for the determination of 2,4,5,6-tetraaminopyrimidine sulfate (TAOS) in hair dye by ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established.Hair dye sample was extracted by 0.3% (volume fraction) formic acid aqueous solution under ultrasonic assistance.The separation was performed with a Waters BEH-C18 column (100 mm×2.1 mm,1.7 μm) and isocratictly eluted by a mixed solution of V(0.3% formic acid aqueous solution)∶V(acetonitrile)=95∶5.Under electrospray positive ion mode,the qualitative and quantitative analysis were performed adopting the multiple reaction monitoring (MRM) mode.The results showed that good linear relationship displays within the range 0.020~5.0 mg/L with the correlation coefficients (R2) more than 0.99.The limit of detection (S/N=3) is 0.17 mg/kg,while the limit of quantification (S/N=10) is 0.56 mg/kg.The average recovery of the spiked samples is in the range of 87.5%~96.0% with the relative standard deviation (RSD,n=6) of 5.7%~8.7%.
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