Physicochemical Properties of Alkyl Polyglycosides-Phase cwj pwm
Binary systems

Kev ua tau zoo heev ntawm surfactants yog qhov tseem ceeb vim muaj kev cuam tshuam rau lub cev thiab tshuaj lom neeg. Qhov no siv ntawm ib sab mus rau cov khoom siv interface thiab ntawm qhov tod tes rau tus cwj pwm hauv kev daws teeb meem, xws li tus cwj pwm theem. Piv nrog rau fatty cawv ethoxylates (alkyl polyglycol ethers), physicochemical tsis ntawm alkyl glycosides tau kawm me ntsis txog tam sim no. Hauv cov kev tshawb fawb no, alkyl polyglycosides tau pom tias muaj cov khoom tseem ceeb uas, qee zaum, txawv txawv ntawm lwm cov non-ionic surfactants. Cov txiaj ntsig tau los txog tam sim no tau sau tseg raws li hauv qab no. Qhov sib txawv tseem ceeb cuam tshuam nrog kev coj tus cwj pwm ntawm fatty cawv ethoxylates yog qhov tshwj xeeb.

Piv nrog rau cov kev tshawb fawb ntawm cov roj ntsha ethoxylates, txog rau tam sim no tsuas yog ob peb txoj kev tshawb fawb txog cov tshuaj sib txawv ntawm purity tau ua rau theem tus cwj pwm ntawm alkyl Polyglycosides. Thaum sib piv cov txiaj ntsig tau txais, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias Kev Muaj Peev Xwm ntawm cov khoom thib ob muaj kev cuam tshuam loj heev rau cov ntsiab lus ntawm cov kab kos theem. Txawm li cas los xij, kev soj ntsuam yooj yim tuaj yeem ua tau hais txog theem tus cwj pwm ntawm alkyl glycosides.Qhov kev coj cwj pwm ntawm C8-10 Alkyl polyglycoside (C8-10 APG) yog qhia hauv (Figure1). Ntawm qhov kub siab tshaj 20 ℃, C8-10 APG tshwm sim txog qhov kev txhawj xeeb siab heev hauv theem isotropic uas cov viscosity nce ntau heev. Lub birefringent lyotropic theem ntawm nematic kev ntxhib los mos yog tsim nyob ib ncig ntawm 95% los ntawm qhov hnyav, uas hloov ntawm ib ncig ntawm 98% los ntawm qhov hnyav rau hauv ib cheeb tsam huab ob-theem ntawm cov kua thiab cov khoom alkyl polyglycoside. Ntawm qhov kub thiab txias, lub lamellar kua crystalline theem kuj tseem pom ntawm 75 thiab 85% los ntawm qhov hnyav.
Rau qhov ntshiab luv-chain n-octyl-β-D-glucoside, daim duab qhia theem tau tshawb xyuas kom meej los ntawm Nilsson li al. thiab Sakya et al. Cov theem ntawm tus kheej tau zoo sib xws los ntawm cov txheej txheem xws li NMR thiab lub kaum sab xis me me X-ray tawg (SAXS). Daim duab 2 qhia cov theem ua ntu zus. Thaum qhov kub thiab txias, lub hexagonal, ib lub cubic thiab thaum kawg lub lamellar theem tau pom nrog nce cov ntsiab lus surfactant. Qhov sib txawv ntawm qhov sib txawv ntawm C8-10 alkyl polyglycoside theem daim duab (Daim duab 1) tuaj yeem piav qhia los ntawm qhov sib txawv alkyl saw ntev txiav thiab los ntawm ntau qhov sib txawv ntawm cov piam thaj hauv cov molecule (saib hauv qab).