China Surfactant Detergent & Cosmetics

Study on formation of hybrid vesicles with alkyl phosphate and conjugated linoleic acid

LIANG Xiao-dan, CHENG Ruo-hui, FANG Yun, FAN Ye, ZHANG Hao-jie, HE Yi-jing

2017, 47 (5): 241-245. doi: 10.13218/j.cnki.csdc.2017.05.001

Abstract ( 273 )

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Fatty acid vesicles (FAVs) with a hollow core-shell structure can entrap reactive molecules.In order to improve the defect that FAVs can form near its pK_a only so as to enlarge their application field,mild anionic surfactant potassium alkyl phosphate (MAPK) was added to conjugated linoleic acid (CLA).The pH window for vesicles formation was characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM).It was found that hybrid FAVs can be formed at neutral to acidic environment by blending CLA with 9% MAPK without significant change of morphology and particle size of the original FAVs,and the pH window of the hybrid FAVs has a tendency to gradually broaden along with increasing of the dosage of MAPK.The result shows the potential application of FAVs in fields of cosmetics and personal health care products.

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Preparation and property of “dry concentrated sulfuric acid”

HOU Yi-ting, GUAN Ru-qun, HAO Ya-juan, YANG Heng-quan

2017, 47 (5): 246-250. doi: 10.13218/j.cnki.csdc.2017.05.002

Abstract ( 303 )

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Functional modification of surface of SiO₂ nanoparticles (SN) with 1H,1H,2H,2H-perfluoro-octanetrimethoxysilane was conducted,and corrosion resisting super hydrophobic SiO₂ nanoparticles (SiN-F) were prepared.Then “dry concentrated sulfuric acid”,which is sulfuric acid encapsulated in air inverse phase bubbles was prepared by mixing SN-F and 90% concentrated sulfuric acid under high speed stirring.The effect of the dosage of SN-F on formation of “dry concentrated sulfuric acid” was examined.Result shows that when the dosage of SN-F is 5% of the mass of concentrated sulfuric acid,morphology of the “dry concentrated sulfuric acid” is uniform spherical with particle size of 100-200 μm.The prepared “dry concentrated sulfuric acid” displays high specific surface area and certain mechanical strength.After 18 months,its morphology and properties remain unchanged.The method provides new opportunities for safety in transportation,storage and chemical reaction operations in industrial applications of concentrated sulfuric acid.

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Synthesis and application of ionic liquid surfactants (Ⅴ)Thermodynamics and behavior of surfactant aggregation

ZOU Wen-yuan, YANG Xu-zhao, XU Qing-jie, WANG Ping, WANG Jun

2017, 47 (5): 251-256. doi: 10.13218/j.cnki.csdc.2017.05.003

Abstract ( 309 )

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Aggregation of ionic liquid surfactants in aqueous solution is an entropy driven process,according to the data of its ΔG⁰,ΔH⁰ and ΔS⁰.Aggregation number of ionic liquid surfactants is similar to that of traditional surfactants,40-160 in general.The apparent hydrodynamic diameter (D_h) of surfactant aggregation is several nanometers;but in case the concentration of the ionic liquid surfactant is high as forming vesicles,D_h may achieve 100 nm.Ionization degree of counter ions at the surface of surfactant micelles is about 0.15-0.6.Aggregation behavior of ionic liquid surfactants in water is similar to that of traditional surfactant,but the aggregation behavior of ionic liquid surfactants in water is different with that in organic solvents.

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Enrichment of sisal saponin from sisal waste liquor by surfactant solution extraction and flocculation

LI Xiang, LIN Wang-mei, LI Hua-feng, HUANG Shang-shun

2017, 47 (5): 257-262. doi: 10.13218/j.cnki.csdc.2017.05.004

Abstract ( 297 )

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In the process for preparation of sisal fiber,waste liquor that containing sisal saponin is by-produced.In order to make use of the saponin,enrichment process is to be performed.Traditional enrichment process was based upon extraction with an organic solvent.A new approach using a surfactant was tested via a series of experiment.Suitable process conditions were obtained as follows:extracting agent,sodium lauryl sulfate with concentration of 0.025 8 mol/L;ratio of starting material to extracting agent,1∶10 (g∶mL);pre-soaking time,4 h;ultrasonic power,120 W;extraction time,40 min for three times.The extract was further processed for enrichment of the sisal saponin in 100 mL extract under conditions as:temperature,50 ℃;adding 20 mL of 1% aluminum chloride polymer,followed by adding 2 mL of 0.1% cationic polyacrylamide.Under the above mentioned conditions of extraction and flocculation,the flocculated material was hydrolyzed by sulfuric acid.Results show that as comparing with the traditional process,the new approach can increase the product yield for 15.5%,decrease 81.2% of acid consumption and 96.5% of COD discharge per 1 g sisal saponin.

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Effect of dying uniformity of protein stained swatch on detergency evaluation

GUO Hai-yan, YAO Chen-zhi, YAN Fang, SHEN Jun

2017, 47 (5): 263-266. doi: 10.13218/j.cnki.csdc.2017.05.005

Abstract ( 308 )

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The preparation method of improved protein stained swatch (Improved JB-02) using ball mill instead of hand grinding was studied,and the quality of the Improved JB-02 was evaluated by comparison of the detergency value of standard laundry powder,market commodity laundry powder and standard laundry powder containing alkaline protease.Results show that after using the ball mill,the carbon black particle size is smaller,the particle size distribution is narrower,the dispersion uniformity is improved,and the dying levelling property of the stained swatch is improved.Furthermore,the detergency value of the standard laundry powder sample formulated with protease mass fraction lower than 0.15% becomes higher since the use of Improved JB-02.It indicates that the Improved JB-02 is more sensitive to protease and displays good storage stability.It can be considered as a standard tool for the evaluation of detergency of laundry products.

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Preparation of a composited cationic flocculant based on polyacrylamide

LIN Fu-hua, LIU Gong-fei

2017, 47 (5): 267-271. doi: 10.13218/j.cnki.csdc.2017.05.006

Abstract ( 242 )

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A new type composite flocculant PDAC was prepared by in-situ modification of blend composed of acrylamide (AM),microcrystalline cellulose (MCC) and attapulgite by dimethyldiallylammonium chloride (DMDAAC) with 2,2′-azo bis[2-methylpropionamidine] dihydrochloride as initiator.Effects of different reaction conditions on turbidity removal result were examined with artificial prepared kaolin-water suspension as the simulated turbid water for testing.Results show that with the mass of AM as the standard basis,when the initial solid dosage is 20%,the DMDAAC dosage is 40%,the dosage of initiator is 0.3%,acid the activated attapulgite dosage is 60%,MCC is 80%,the reaction temperature is 60 ℃,and the reaction time is 7 h,the flocculation performance of PDAC is better and the turbidity removal rate achieves 96.37%,which is better than that of sample without use of DMDAAC.Further,stability test result shows that the storage stability of PDAC is improved to some extent after the addition of DMDAAC.

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Anti-acne efficacy of essential oil from Pogostemon cablin (Blanco) Benth.

WANG Yue, GUO Miao-miao, SHI Yan-qin, PAN Xian-hua, LU Yan-hua, CAO Ping

2017, 47 (5): 272-276. doi: 10.13218/j.cnki.csdc.2017.05.007

Abstract ( 484 )

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Chemical composition of the essential oil from Pogostemon cablin (Blanco) Benth.(EOP) was quantitatively analyzed by gas chromatography-mass spectrometry (GC-MS).The safe mass concentration of the EOP to Human Acute Mononuclear Cells (THP-1) was determined via cytotoxicity screening test.An inflammatory acne model was established by stimulating THP-1 with Propionibacterium acnes (P.acnes).Subsequently,the effect of the EOP on the expression of proinflammatory cytokine IL-1β was assessed.The anti-acne mechanism of the EOP was examined by qRT-PCR.Results show that at maximum safe mass concentration of 12.5 mg/L of the EOP,the influence on the activity of P.acnes is rather small and the secretion of IL-1β is significantly inhibited by a rate of 66.54%.The EOP also significantly reduces the mRNA level of Toll-like receptor 2 (TLR2) by 73.73%.Thereby,the EOP inhibits proinflammatory signal transduction and production of secondary inflammatory mediators.

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Study on stability of phenethyl alcohol microcapsules and their thermal releasing behavior

SHEN Jing-xuan, XIAO Wei-yi, XU Lan-lan, LIU Zhe, SHEN Yan, HUANG Hai-qun

2017, 47 (5): 277-280. doi: 10.13218/j.cnki.csdc.2017.05.008

Abstract ( 346 )

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Phenethyl alcohol microcapsules were prepared by complex coagulation method with phenethyl alcohol as core material as well as gelatin and carboxyl methyl cellulose as wall materials.The microcapsule embedding rate achieves 92%.Effects of temperature and time on thermal releasing behavior of the phenethyl alcohol microcapsules as well as their storing stability on cigarette paper were examined.Results show that the phenethyl alcohol microcapsules can adhere on the paper fibers,and basically maintain no change at 120 ℃ for 10 min;so it can satisfy the main technological requirement for the cigarette paper.Basically,the core material of the microcapsules can volatilize completely at 180 ℃ for 40 min;while after storing under close and room temperature for 60 d,the retention rate of micro-capsulated phenethyl alcohol reaches 65%.It shows that the storing stability of the microcapsules is good.

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Preparation of H₆P₂Mo₉W₉O₆₂/Cu₃(BTC)₂ and its catalytic performance for synthesis of acetals and ketals

XIANG Shi-yin, YANG Shui-jin

2017, 47 (5): 281-285. doi: 10.13218/j.cnki.csdc.2017.05.009

Abstract ( 217 )

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H₆P₂Mo₉W₉O₆₂/Cu₃(BTC)₂ as a new catalyst was prepared by impregnation method.Fourier transformation infrared spectrum (FT-IR),X-ray diffraction (XRD),thermal gravimetry (TG) and scanning electron microscope (SEM) were used for characterization and measurement of its composition,structure,thermal stability and morphology.The reaction,with H₆P₂Mo₉W₉O₆₂/Cu₃(BTC)₂ as catalyst,for synthesis of ketal from cyclohexanone and ethylene glycol as starting materials was used as probe reaction,and the optimized synthesis conditions were found by orthogonal experiments as follows:fixing the amount of cyclohexanone as 0.2 mol;molar ratio,n(cyclohexanone)∶n(ethylene glycol)=1∶1.3;mass ratio of the catalyst to total reactants,0.3%;the reaction time,60 min;and amount of water stripping agent,6 mL.The yield of the product reaches 83.7%.Under similar reaction conditions,the yield of benzaldehyde ethylene glycol acetal reaches 70.1%;butanone glycol ketal,66.0%;butanone 1,2-propylene glycol ketal,62.1%;benzaldehyde 1,2-propanediol acetal,66.3%;and cyclohexanone 1,2-propylene glycol ketal,75.8%.Compared with that of catalysts H₄SiW₁₂O₄₀/MCM-48,activated carbon supported p-toluene sulfonic acid and Al-cross linked montmorillonite,H₆P₂Mo₉W₉O₆₂/Cu₃(BTC)₂ shows better catalytic performance.

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A review of the evaluation methods for hair photodamage

CAO Yue, QU Hao

2017, 47 (5): 286-291. doi: 10.13218/j.cnki.csdc.2017.05.010

Abstract ( 386 )

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Phenomenon of human hair photodamage was briefed.The methods for evaluating the changes in morphology and chemical materials of human hair were reviewed in detail.Finally,the multi-spectral imaging technology and its application in the evaluation of hair photodamage were introduced emphatically.

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Determination of ten kinds of synthetic musk in cream cosmetics by GC-MS

NING Xiao-jun, ZHOU Jing, FU Chang-yu

2017, 47 (5): 292-296. doi: 10.13218/j.cnki.csdc.2017.05.011

Abstract ( 264 )

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An analytical method was established for simultaneous determination of ten kinds of synthetic musk in cream cosmetics using gas chromatography-mass spectrometry (GC-MS).Samples were spiked with deuterium-labeled isotope internal standards and extracted by n-hexane.Then the extract was purified with matrix solid-phase dispersion (MSPD) and separated by a VF-WAXms capillary column.All the compounds were detected with selected ion monitoring (SIM) scanning mode.Quantification was carried out using standard plot calibration.Results show that the ten kinds of synthetic musk display a good linear relationship within the mass concentration range of 0.01-0.2 mg/L and the correlation coefficients are all higher than 0.99.The quantification limits (LOQs) of the synthetic musk are in the range of 0.05-0.10 mg/kg.Values of spiked recoveries are found to be from 80.1% to 102.2% with all relative standard deviations (RSD) lower than 5%.

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Simultaneous determination of nine kinds of dyestuff in hair dyes by ultra performance liquid chromatography-tandem mass spectrometry

DAI Ming

2017, 47 (5): 297-300. doi: 10.13218/j.cnki.csdc.2017.05.012

Abstract ( 253 )

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A method for simultaneous determination of nine kinds of dyestuff in hair dyes by UPLC-MS/MS was established.The hair dye sample was extracted by methanol under assistance of ultrasonic irradiation.The separation was performed by a BEH-C₁₈ column (2.1 mm×100 mm,1.7 μm) with gradient elution of 10 mmol/L ammonium acetate and acetonitrile as mobile phase.The electrospray ionization (ESI) source with positive ion mode was used for the analysis of the nine components in the multiple reaction monitoring (MRM) mode.External standard method was used for quantification.The limit of detection of the nine kinds of dyestuff,including 2-(4-methyl-2-nitrophenylamino) ethanol,3-nitro-N-(2-hydroxyethyl)-4-aminophenol,4-amino-N,N-dimethylaniline,4-((2-hydroxypropyl) amino)-2-nitrophenol,bis-2,6-N,N-(2-hydroxyethyl) diaminotoluene,5-((2-hydroxyethyl) amino)-o-cresol,5-amino-6-chloro-2-methylphenol,3,5-diamino-2,6-dimethoxypyridine dihydrochloride and 6-amino-m-cresol are 1.7,0.84,0.27,3.4,0.034,1.2,7.0,0.17 and 0.20 mg/kg,respectively.The average recoveries of the nine kinds of dyestuff in the spiked samples are in the range of 90.0%-110.0% with the relative standard deviations (RSD,n=6) of 1.4%-8.6%.This method is simple,accurate and effective for simultaneous determination of the nine kinds of dyestuff in hair dyes.

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