Amalungiselelo e-emulsion yezimonyo

Ukuhlanganiswa kwamanani amancane ngokuqhathaniswa wezingxenye zikawoyela ekuhlanjululweni nasekubunjweni kweshampu kubonisa izici eziyisisekelo zokuhlanganisa okufanele kulindelwe ukuthi ama-alkyl polyglycosides azibonise njengama-nonionic surfactants. Kodwa-ke, ukuqonda kahle kokuziphatha kwesigaba ezinhlelweni zama-multicomponent kuyadingeka ukuze kuhlolwe i-alkyl polyglycosides njengama-emulsifiers anamandla ahlanganiswe nama-coemulsifiers e-hydrophobic afanelekile.Ngokujwayelekile, umsebenzi ohlangene we-alkyl polyglycosides unqunywa ubude be-carbon chain futhi, ngokwezinga elincane, ngezinga le-polymerization (DP). Umsebenzi wokuhlangana ubuso ukhuphuka ngobude beketango le-alkyl futhi iphezulu kakhulu eduze noma ngaphezu kwe-CMC ngenani elingaphansi kuka-1 mN/m. Ku-interface yamanzi/amaminerali, i-C12-14 APG ikhombisa ukungezwani okuphansi kwendawo kune-C12-14 alkyl sulfate lnterfacial ukungezwani kwe-n-decane, isopropyl myristate kanye ne-2-octyl dodecanol kukalwe kuma-alkyl monoglucosides amsulwa (C8, C10,C12, C12) kanye nesigaba sokuthembela ku-polylyl engxenyeni kawoyela kuchaziwe. I-alkyl polyglycosides ye-Medium-chain ingasetshenziswa njengama-emulsifiers we-o/w emulsion ngokuhlanganiswa nama-hydrophobic co emulsifiers.

Ama-alkyl polyglycosides ahlukile kuma-ethoxylated nonionic surfactants ngoba awashintshi izinga lokushisa ukusuka ku-oyela emanzini (O/W) ukuya kuma-emulsions wamafutha emanzini (W/O). i-sorbitol mono-laurate (SML).Eqinisweni, ukuziphatha kwesigaba nokungezwani phakathi kobuso besistimu ye-alkyl polyglycoside emulsifier kufana kakhulu naleyo yesistimu ye-fatty alcohol ethoxylates evamile uma isilinganiso sokuxuba se-hydrophilic/lipophilic emulsifier ohlelweni lwe-non-ethoxylated sisetshenziswa esikhundleni semitha njengokuziphatha kwesigaba esibalulekile.

Isistimu ye-dodecane, amanzi, i-Lauryl Glucoside ne-Sorbitan Laurate njenge-hydrophobic coemulsifier yakha ama-microemulsions ngesilinganiso esithile sokuxuba se-C12-14 APG kuya ku-SML ka-4:6 kuya ku-6:4 (Umfanekiso 1). Okuqukethwe okuphezulu kwe-SML kuholela kuma-emulsion we-w/o kuyilapho okuqukethwe okuphezulu kwe-alkyl polyglycoside kukhiqiza ama-emulsion we-o/w. Ukwehluka kwengqikithi yokugxilisa i-emulsifier kuphumela kulokho okubizwa ngokuthi “izinhlanzi ze-Kahlweit” kumdwebo wesigaba, umzimba oqukethe ama-microemulsions ezigaba ezintathu kanye nama-microemulsions wesigaba esisodwa somsila, njengoba kuqashelwa ngama-emulsifiers e-ethoxylated njengomsebenzi wezinga lokushisa. I-% yengxube ye-emulsifier yanele ukwakha i-microemulsion yesigaba esisodwa.

Ukufana kwamaphethini wokuguqulwa kwesigaba sezinhlobo ezimbili ze-surfactant akugcini nje kuphela ekuziphatheni kwesigaba, kodwa futhi kungatholakala ekucindezelekeni kwesixhumi esibonakalayo sesistimu ye-emulsifying.Izakhiwo ze-hydrophilic - lipophilic zengxube ye-emulsifier zifinyelele ukulingana lapho I-Ratio ye-C12-14 APG / SML yayingu-4: 6, futhi i-interfacial tension yayiyi-interfacial west. Ngokuphawulekayo, ubuncane bokungezwani obuphakathi kobuso obuphansi kakhulu (cishe 10^-3mN/m) ibonwe kusetshenziswa ingxube ye-C12-14 APG/SML.

Phakathi kwama-alkyl glycosides aqukethe ama-microemulsions, isizathu somsebenzi ophezulu wokusebenzelana kobuso ukuthi ama-hydrophilic alkyl glycosides anamaqembu amakhulu e-glucoside-head kanye nama-hydrophobic co-emulsifiers anamaqembu amancane axutshwe esixhunyweni samanzi samafutha ngesilinganiso esifanele. I-Hydration (kanye nosayizi osebenzayo wekhanda le-hydration) akuncikile kancane ekushiseni kunokuba kunjalo ngama-ethoxylated nonionic surfactants. Ngakho-ke, ukungezwani kobuso obufanayo kubonwa kuphela ngokuziphatha kwesigaba esincike kancane kuthempelesha sengxube ye-emulsifier engafakwanga ethoxylated.

Lokhu kunikeza izinhlelo zokusebenza ezithakazelisayo ngoba, ngokungafani nama-fatty alcohol ethoxylates, i-alkyl glycosides ingenza ama-microemulsions azinzile lokushisa. Ngokushintsha okuqukethwe kwe-surfactant, uhlobo lwe-surfactant esetshenzisiwe, kanye nesilinganiso samafutha/amanzi, ama-microemulsions angakhiqizwa ngezinto ezithile, njengokubonisa ngale, i-viscosity, imiphumela yokuguqulwa, kanye nezakhiwo ezikhipha amagwebu. I-co-emulsifier ohlelweni oluxubile lwe-alkyl ether sulphate kanye ne-non-ion, indawo enwetshiwe ye-microemulsion iyabonwa, futhi ingasetshenziswa ukwenza ama-emulsions amanzi okugxilisa noma ama-particle amahle.

Ukuhlolwa kwenziwe ngonxantathu besigaba se-pseudoternary sezinhlelo zezingxenye eziningi eziqukethe i-alkyl polyglycoside/SLES kanye ne-SML ene-hydrocarbon (i-Dioctyl Cyclohexane) ne-alkyl polyglycoside/SLES kanye ne-GMO enamafutha e-polar (i-Dicaprylyl Ether/Octyl Dodecanol),Akhombisa ukuvuleka/ukuhlukahluka kwezindawo ezincane izigaba ezine-hexagonal kanye nezigaba ze-lamellar ngokuncika kwisakhiwo samakhemikhali kanye nesilinganiso sokuxuba sezingxenye. Uma labonxantathu besigaba bebekwe phezulu konxantathu bokusebenza abahambisanayo okubonisa isibonelo ukuziphatha okukhihliza amagwebu kanye nezimpawu ze-viscosity zezingxube ezihambisanayo, bahlinzeka ngosizo olubalulekile kumenzi wefomula ekutholeni ukwakheka kwe-microemulsion ethize futhi eklanywe kahle yesib izihlanzi zobuso noma okugeza okuyigwebu kabusha. Njengesibonelo, ukwakhiwa kwe-microemulsion efanelekile yokugeza ama-foam refatting kungatholakala kunxantathu wesigaba.