Physicochemical Properties ya Alkyl Polyglycosides-Phase khalidwe
Binary systems
Kuchita bwino kwambiri kwa ma surfactants kwenikweni kumachitika chifukwa cha thupi komanso mankhwala. Izi zikugwira ntchito kumbali imodzi ku mawonekedwe a mawonekedwe ndi mbali ina ku khalidwe mu njira yothetsera, monga khalidwe la gawo. Poyerekeza ndi mafuta a mowa ethoxylates (alkyl polyglycol ethers), magawo a physicochemical a alkyl glycosides sanaphunzirepo pang'ono mpaka pano. M'maphunzirowa, ma alkyl polyglycosides apezeka kuti ali ndi zinthu zazikulu zomwe, nthawi zina, zimakhala zosiyana kwambiri ndi ena omwe si a ionic surfactants. Zotsatira zomwe zapezedwa mpaka pano zafotokozedwa mwachidule motere. Kusiyana kwakukulu komwe kumakhudzana ndi khalidwe la mafuta a mowa ethoxylates kunali kochititsa chidwi kwambiri.
Poyerekeza ndi kafukufuku wokhazikika wamafuta amowa ethoxylates, mpaka pano maphunziro ochepa okha okhudzana ndi zinthu zachiyero chosiyana achitika mu gawo la alkyl Polyglycosides. Poyerekeza zotsatira zomwe zapezedwa, ndikofunikira kukumbukira kuti Kukhalapo kwa zigawo zachiwiri kumakhudza kwambiri tsatanetsatane wazithunzi zagawo. Komabe, zowona zenizeni zitha kupangidwa za gawo la alkyl glycosides.Makhalidwe a gawo laukadaulo C8-10 Alkyl polyglycoside(C8-10 APG) akuwonetsedwa mu (Chithunzi 1). Pa kutentha pamwamba pa 20 ℃, C8-10 APG imawoneka yodetsa nkhawa kwambiri mu gawo la isotropic lomwe kukhuthala kumawonjezeka kwambiri. Gawo la birefringent lyotropic la nematic texture limapangidwa mozungulira 95% polemera, lomwe limasintha pafupifupi 98% kulemera kwake kukhala mitambo yamitundu iwiri yamadzi ndi olimba alkyl polyglycoside. Pakutentha kwambiri, gawo la lamellar lamadzimadzi la crystalline limawonedwanso pakati pa 75 ndi 85% polemera.
Kwa n-octyl-β-D-glucoside yoyera yaufupi, chithunzichi chinafufuzidwa mwatsatanetsatane ndi Nilsson et al. ndi Sakya et al. magawo payekha anali kwambiri yodziwika ndi Njira monga NMR ndi yaing'ono ngodya X-ray kubalalika (SAXS). Chithunzi 2 chikuwonetsa ndondomeko ya gawo. Pa kutentha kochepa, hexagonal, kiyubiki ndipo pamapeto pake gawo la lamellar limawonedwa ndi kuchuluka kwa surfactant. Kusiyana kokhudzana ndi Chithunzi cha C8-10 alkyl polyglycoside gawo (Chithunzi 1) chitha kufotokozedwa ndi kusiyana kwa kutalika kwa unyolo wa alkili ndi Nambala yosiyana ya mayunitsi a shuga mu molekyulu (onani pansipa).
Nthawi yotumiza: Oct-20-2020