Iimpawu zePhysicochemical of Alkyl Polyglycosides-Phase yokuziphatha
Iinkqubo zokubini

Ukusebenza okugqwesileyo kwee-surfactants ngokuyimfuneko kungenxa yeziphumo ezithile zomzimba kunye neekhemikhali. Oku kusebenza kwelinye icala kwiipropati zojongano kwaye kwelinye icala ukuziphatha kwisisombululo, njengokuziphatha kwesigaba. Xa kuthelekiswa ne-fatty alcohol ethoxylates (alkyl polyglycol ethers), iiparameters zephysicochemical of alkyl glycosides ziye zafundwa kancinci ukuza kuthi ga ngoku. Kwezi zifundo, i-alkyl polyglycosides ifunyenwe ineempawu ezibalulekileyo ezinokuthi, kwezinye iimeko, zahluke kakhulu kwezinye ii-non-ionic surfactants. Iziphumo ezifunyenweyo ukuza kuthi ga ngoku zishwankathelwa ngolu hlobo lulandelayo. Umahluko obalulekileyo onxulunyaniswa nokuziphatha kwe-ethoxylates yotywala obunamafutha yayimangalisa ngakumbi.

Xa kuthelekiswa nezifundo ezicwangcisiweyo ze-ethoxylates yotywala obunamafutha, ukuza kuthi ga ngoku kuphela izifundo ezimbalwa ezibandakanya izinto zococeko ezahlukeneyo ziye zaqhutywa kwisigaba sokuziphatha se-alkyl Polyglycosides. Xa kuthelekiswa neziphumo ezifunyenweyo, kubalulekile ukukhumbula ukuba Ubukho bamacandelo esibini bunempembelelo enkulu kwiinkcukacha zemizobo yesigaba. Nangona kunjalo, ukuqwalaselwa okusisiseko kunokwenziwa malunga nokuziphatha kwesigaba se-alkyl glycosides.Ukuziphatha kwesigaba sobugcisa beC8-10 Alkyl polyglycoside (C8-10 APG) iboniswe kwi (Figure1). Kumaqondo obushushu angaphezulu kwe-20℃, i-C8-10 APG ibonakala ifikelela kwiinkxalabo eziphezulu kakhulu kwisigaba se-isotropic apho i-viscosity inyuka kakhulu. I-birefringent lyotropic phase ye-nematic texture yenziwa malunga nama-95% ngobunzima, obutshintsha malunga nama-98% ngobunzima bube yingingqi enamafu enezigaba ezibini zolwelo kunye ne-alkyl polyglycoside eqinileyo. Kumaqondo obushushu asezantsi noko, inqanaba lekristale engamanzi e-lamellar likwajongwa phakathi kwe-75 kunye ne-85% ngobunzima.
Kwi-short-chain ecocekileyo i-n-octyl-β-D-glucoside, umzobo wesigaba uphandwe ngokweenkcukacha nguNilsson et al. kunye noSakya et al. izigaba zomntu ngamnye zibonakaliswe ngokusondeleyo kwiiNdlela ezifana ne-NMR kunye ne-angle encinci ye-X-ray scattering (SAXS). Umzobo 2 ubonisa ukulandelelana kwesigaba. Kwiqondo lokushisa eliphantsi, i-hexagonal, i-cubic kwaye ekugqibeleni isigaba se-lamellar sibonwa ngokunyuka komxholo we-surfactant. Umahluko ngokubhekiselele kwi-C8-10 i-alkyl polyglycoside isigaba Diagram (Umfanekiso 1) unokuchazwa ngokwahlukana kwe-alkyl chain chain cuts kunye nenani elihlukeneyo leeyunithi ze-glucose kwi-molecule (jonga ngezantsi).