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장쇄알킬 아세탈형 비이온성 계면활성제합성에 관한 반응속도론적 연구
손주환,이승렬,남기대,노승호 ( Joo Hwan Shon,Seung Youl Lee,Ki Dae Nam,Seung Ho No ) 한국유화학회 1988 한국응용과학기술학회지 Vol.5 No.1
]Aliphatic aldehyde polyoxyethylene glycol acetals were synthesised through the reaction of aliphatic aldehydes such as caproic aldehyde, capryl aldehyde, capric aldehyde and lauric aldehyde with excess diethylene glycol, triethylene glycol and tetraethylene glycol, respectively. The acetal formation, in which water was azeotropically distilled by adding benzene to the reaction system, was gained a good yield of acetal type compounds. This reaction is found pseudo first order reaction at various temperatures such 70, 80, 90 and 97℃. Also these activation energies of reaction of acetal type products such as caproic aldehyde diethylene glycol acetal, capryl aldehyde diethylene glyco acetal, capric aldehyde diethylene glycol acetal, lauric aldehyde diethylene glycol acetal, caproic aldehyde triethylene glycol acetal and caproic aldehyde tetraethylene acetal were 17.3, 19,6, 21.2, 21.6, 15.5 and 14.7 Kcal/mole.
손주환,이승렬,남기대,김유배 ( Joo Hwan Shon,Seung Youl Lee,Ki Dae Nam,Yu Bae Kim ) 한국유화학회 1988 한국응용과학기술학회지 Vol.5 No.1
Properties of aqueous solution, that is, the viscosities an solubilities of benzene were observed in relation to critical micelle concentration of each alkyl aldehyde polyoxyethylene glycol acetal type surfactant. These showed that the mininum points in specific viscosity/concentration-concentration curves were corresponded with the critical micelle concentration obtained by surface tension and appeared the remarkable increase of non-Newtonics according to the increase of the humber of carbon in hydrophobic groups. The fluidity of non-Newtonics is not observed by a little increase of the degree of polymerization in polyoxyethylene glycol groups.