Tshuaj pleev ib ce emulsion npaj

Lub solubilization ntawm me me ntawm cov roj Cheebtsam nyob rau hauv yaug thiab tshuaj zawv plaub hau formulations qhia lub hauv paus emulsification zog uas alkyl polyglycosides yuav tsum tau xav kom qhia raws li nonionic surfactants. Txawm li cas los xij, kev nkag siab zoo ntawm theem tus cwj pwm hauv cov txheej txheem multicomponent yog qhov tsim nyog txhawm rau ntsuas alkyl polyglycosides ua cov emulsifiers muaj zog ua ke nrog cov hydrophobic coemulsifiers haum. raws li, los ntawm degree ntawm polymerization (DP). Interfacial kev ua ub no nce nrog alkyl saw ntev thiab nyob rau hauv nws siab tshaj plaws nyob ze los yog siab tshaj CMC nrog tus nqi qis dua 1 mN / m. Ntawm cov dej / ntxhia roj sib txuas, C12-14 APG qhia qis qhov nro tshaj C12-14 alkyl sulfate lnterfacial tensions ntawm n-decane, isopropyl myristate thiab 2-octyl dodecanol tau ntsuas rau cov ntshiab alkyl monoglucosides (C8, C10, C12) thiab lawv txoj kev vam khom rau kev solubility ntawm alkyl polyglycosides hauv cov roj theem tau piav qhia. Medium-chain alkyl polyglycosides tuaj yeem siv los ua emulsifiers rau o / w emulsions ua ke nrog hydrophobic co emulsifiers.

Alkyl polyglycosides txawv ntawm ethoxylated nonionic surfactants nyob rau hauv uas lawv tsis raug kub-induced theem hloov los ntawm roj-hauv-dej (O/W) rau roj-hauv-dej (W/O) emulsions.Xwb, lub hydrophilic / lipophilic zog muaj peev xwm. Ua kom sib npaug los ntawm kev sib xyaw nrog hydrophobic emulsifier xws li glycerin mono-oleate (GMO) los yog lub cev qhuav dej sorbitol mono-laurate (SML).Qhov tseeb, theem kev coj cwj pwm thiab kev sib cuam tshuam ntawm cov alkyl polyglycoside emulsifier system zoo ib yam li cov pa. fatty cawv ethoxylates system yog tias qhov sib xyaw ntawm hydrophilic / lipophilic emulsifier hauv cov txheej txheem uas tsis yog-ethoxylated yog siv los ntawm qhov kub thiab txias raws li cov theem tseem ceeb ntawm kev coj cwj pwm.

Lub kaw lus rau dodecane, dej, Lauryl Glucoside thiab Sorbitan Laurate ua hydrophobic coemulsifier tsim microemulsions ntawm ib qho kev sib xyaw ntawm C12-14 APG rau SML ntawm 4: 6 txog 6: 4 (Daim duab 1). Cov ntsiab lus SML siab dua ua rau w / o emulsions whereas ntau dua alkyl polyglycoside cov ntsiab lus tsim o / w emulsions. Kev hloov pauv ntawm tag nrho cov emulsifier concentration tau tshwm sim nyob rau hauv lub npe hu ua "Kahlweit ntses" nyob rau hauv daim duab theem, lub cev muaj peb-theem microemulsions thiab tus Tsov tus tw ib-theem microemulsions, raws li pom nrog ethoxylated emulsifiers raws li ib tug muaj nuj nqi ntawm kub.Lub siab emulsifying. Lub peev xwm ntawm C12-14 APG / SML sib tov piv nrog cov roj cawv ethoxylate system tau tshwm sim hauv qhov tseeb tias txawm tias 10% ntawm cov emulsifier sib tov txaus los tsim ib theem microemulsion.

Qhov zoo sib xws ntawm theem inversion qauv ntawm ob hom surfactant tsis tsuas yog txwv rau theem tus cwj pwm, tab sis kuj tuaj yeem pom nyob rau hauv qhov sib cuam tshuam ntawm emulsifying system.The hydrophilic - lipophilic zog ntawm cov emulsifier sib tov mus txog qhov sib npaug thaum qhov ratio ntawm C12. -14 APG / SML yog 4: 6, thiab qhov sib cuam tshuam ntawm lub ntsej muag yog qhov qis tshaj. Qhov tseem ceeb, qhov tsawg kawg nkaus ntawm kev sib tshuam ntawm lub ntsej muag (kwv yees li 10^-3mN/m) tau pom siv C12-14 APG/SML sib tov.

Ntawm cov alkyl glycosides uas muaj microemulsions, yog vim li cas rau kev ua haujlwm siab interfacial yog tias hydrophilic alkyl glycosides nrog cov pab pawg loj dua glucoside-heads thiab hydrophobic co-emulsifiers nrog cov pab pawg me yog sib xyaw ntawm cov roj-dej interface hauv qhov sib piv zoo. Kev ywg dej (thiab qhov loj me ntawm lub taub dej hydration) tsawg dua nyob ntawm qhov kub thiab txias dua li cov ntaub ntawv nrog ethoxylated nonionic surfactants. Yog li, qhov sib npaug ntawm qhov sib npaug yog pom tsuas yog rau qhov ntsuas kub me ntsis raws theem tus cwj pwm ntawm cov tsis-ethoxylated emulsifier sib tov.

Qhov no muab cov ntawv thov nthuav vim tias, tsis zoo li cov cawv muaj roj ethoxylates, alkyl glycosides tuaj yeem tsim qhov kub thiab txias microemulsions. Los ntawm kev sib txawv ntawm cov ntsiab lus surfactant, hom surfactant siv, thiab cov roj / dej piv, microemulsions tuaj yeem tsim nrog cov khoom tshwj xeeb, xws li pob tshab, viscosity, kev hloov pauv, thiab cov khoom ua npuas. Co-emulsifier hauv kev sib xyaw ua ke ntawm alkyl ether sulphate thiab non-ion, nthuav dav microemulsion cheeb tsam tau pom, thiab tuaj yeem siv los tsim cov concentrate lossis nplua particle roj-dej emulsions.

Kev ntsuam xyuas tau ua los ntawm pseudoternary theem daim duab peb sab ntawm multicomponent systems uas muaj alkyl polyglycoside / SLES thiab SML nrog ib tug hydrocarbon (Dioctyl Cyclohexane) thiab alkyl polyglycoside / SLES thiab GMO nrog polar roj (Dicaprylyl Ether / Octyl Dodecanol thiab decanol), v. ntawm thaj chaw rau o / w, w / o los yog microemulsions rau hexagonal theem thiab rau lamellar theem nyob rau hauv dependence raws li cov qauv tshuaj thiab sib tov piv ntawm cov khoom. Yog hais tias cov theem peb sab yog superimposed ntawm congruent kev ua tau zoo daim duab peb sab qhia piv txwv li foaming tus cwj pwm thiab viscosity ntawm cov sib tov sib xyaw, lawv muab ib tug tseem ceeb pab rau tus formulator nyob rau hauv nrhiav tshwj xeeb thiab zoo-tsim microemulsion formulations rau xws li lub ntsej muag cleansers los yog refatting ua npuas ncauj da dej. Ua piv txwv, ib qho tsim nyog microemulsion formulation rau refatting ua npuas ncauj da dej tuaj yeem muab tau los ntawm theem peb sab.