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Preparation and Investigation of High-Efficiency Antibacterial Liquid Dishwashing Detergent

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Transactions of Tianjin University 2019年第4期25卷 322-329页

作者： Mingxue Dai Jintang Guo Xuexue Xue Yakai Feng School of Chemical Engineering and Technology Tianjin University

A high-effi ciency liquid dishwashing detergent was prepared by using oregano essential oil as an antibacterial agent. The surface cleaning and antibacterial property of the detergent resolved its unifunctionality problem. The antibacterial activities of the detergent were demonstrated through a disk diff usion assay and wipe experiments with Escherichia coli and Staphylococcus aureus . Results showed that the prepared detergent was highly eff ective against E. coli and S. aureus . The results of chemical accelerated tests indicated that the detergent would be eff ective for at least 1 year. The antibacterial property and detergency performance of the high-effi ciency antibacterial liquid dishwashing detergent were compared with those of a commercial antibacterial detergent containing 0.02% o -phenylphenol. The detergency performance of the high-effi ciency detergent reached 97.8% and was superior to that of the commercial antibacterial detergent.

关键词： Oregano essential oil Dishwashing detergent Antibacterial property detergency performance

Surface Performance Testing of Cardanol Polyoxyethylene Ether and Its Application in Detergent

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China Detergent & Cosmetics 2017年第3期2卷 59-65页

作者： Zhao Xuehua Wang Limin Huang Zhongrui Kang Wenqian Che Fei Zhai Zhaokai Shanghai Key Laboratory of Functional Materials Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai Bronkow Chemical Co. Ltd.

Cardanol polyoxyethylene ether is a kind of nonionic surfactants based on natural raw materials, with good surface activity and resistance to hard water. At 25 ℃, the value of critical micelle concentration （CMC） is 6.09×10-6 mol/L, and the lowest surface tension （TcMc） is 38.08 mN/m. Moreover, cardanol polyoxyethylene ether has strong salt tolerance to monovalent inorganic salts; with the increase of concentration of divalent inorganic salt, the surface activity of cardanol polyoxyethylene ether is enhanced. The effect of monohydric alcohol on the surface activity of cardanol polyoxyethylene ether is complex： the ability of BGF-10 to form micelles increases and then decreases with the increase of the concentration of monohydric alcohol, cardanol polyoxyethylene ether has a synergistic effect with anionic, nonionic and cationic surfactants, especially with hexadecyltrimethylammonium bromide （CTAB）, and its critical micelle concentration is decreased by 2.52%, while the surface tension is decreased by 11.49%. Test results also show, comparing to nonylphenol polyoxyethylene ether, the emulsifying and the thickening performances of cardanol polyoxyethylene ether are better, and its foam performance is lower. Also, the cloud point of cardanol polyoxyethylene ether is higher than nonylphenol polyoxyethylene ether. In most case, the detergency of cardanol polyoxyethylene ether is better than or equivalent to nonylphenol polyoxyethylene ether. cardanol polyoxyethylene ether is an excellent alternative to nonylphenol polyoxyethylene ether in detergents.

关键词： Cardanol polyoxyethylene ether nonylphenol polyoxyethylene ether critical micelle concentration additives detergency

Formula Development of Special Detergent for Automatic Household Dishwasher

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China Detergent & Cosmetics 2020年第2期5卷 57-60页

作者： Gao Juan Shi Rongying Shanghai Hutchison Whitecat Co. Ltd.China

The composition of raw materials in the formula was determined by the fluidity and stability tests of the dishwashing ***,chelators and polymers were determined for the dishwashing powder formulated with specific *** detergency of the final formula was tested in laboratory and the feedback from consumers was also obtained,the results of which indicated that the dishwashing powder formula showed good detergency.

关键词： dishwashing powder automatic dishwasher formula detergency

SYNTHESIS AND APPLICATION OF NEW DETERGENT BUILDER POLYACRYLATE SODIUM

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Transactions of Tianjin University 1998年第1期4卷 102-106页

作者：张卫红龙复冯亚青渠毅王洪云天津大学化工学院

The low molecular weight polyacrylate sodium (PAA Na) detergent builder was synthesized with K 2S 2O 8 as initiator in a neutral aqueous medium. The influences of reaction conditions on the viscosity average molecular weight were studied. The critical value of synthetic PAA Na inhibiting the precipitation of CaCO 3 was determined and compared with that of other common builders. It is confirmed from SEM graphs that PAA Na can make CaCO 3 crystal defective. Washing tests show synthetic PAA Na can partially replace sodium tripolyphosphate (STPP) and is a potential polymeric detergent builder in low phosphate powder detergents.

关键词： polyacrylate sodium low molecular weight detergent builder detergency