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 okufanele kokuziphatha kwesigaba ezinhlelweni zama-multicomponent kuyadingeka ukuze kuhlolwe i-alkyl polyglycosides njengama-emulsifiers anamandla ahlanganiswe nama-hydrophobic coemulsifiers afanelekile. ngokwezinga, 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 kwendawo okuphansi 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) futhi ukuncika kwabo ekuncibilikeni kwe-alkyl polyglycosides esigabeni samafutha 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). Kunalokho, izici ze-hydrophilic/lipophilic zingase bhalansiswa ngokuxuba nesishunyisi se-hydrophobic esifana ne-glycerin mono-oleate (GMO) noma i-sorbitol e-dehydrated mono-laurate (SML).Eqinisweni, ukuziphatha kwesigaba nokungezwani kobuso besistimu ye-alkyl polyglycoside emulsifier ifana kakhulu naleyo evamile isistimu ye-fatty alcohol ethoxylates uma isilinganiso sokuxuba se-hydrophilic/lipophilic emulsifier ohlelweni olungenayo i-ethoxylated sisetshenziswa esikhundleni sezinga lokushisa njengepharamitha yokuziphatha yesigaba 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. Ukuhlukahluka kokugxiliswa kwe-emulsifier okuphelele kuphumela kulokho okubizwa ngokuthi "izinhlanzi ze-Kahlweit" kumdwebo wesigaba, umzimba oqukethe ama-microemulsions ezigaba ezintathu kanye nama-microemulsions wesigaba esisodwa somsila, njengoba kubonwa ngama-emulsifiers e-ethoxylated njengomsebenzi wokushisa.I-emulsifying ephezulu umthamo wengxube ye-C12-14 APG/SML uma uqhathaniswa nesistimu ye-fatty alcohol ethoxylate ibonakala ngokuthi ngisho no-10 % wengxube ye-emulsifier yanele ukwakha i-microemulsion yesigaba esisodwa.

Ukufana kwamaphethini wokuguqulwa kwesigaba wezinhlobo ezimbili ze-surfactant akugcini nje kuphela ekuziphatheni kwesigaba, kodwa futhi kungatholakala ekucindezelekeni kwesixhumi esibonakalayo sesistimu ye-emulsifying.Izakhiwo ze-hydrophilic - lipophilic zengxube ye-emulsifier zifinyelela ukulingana lapho I-Ratio ye-C12 -14 APG/SML yayingu-4:6, futhi ukungezwani kobuso bekuphansi kakhulu. 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),Babonisa ukuhlukahluka kanye nezinga wezindawo ze-o/w, w/o noma ama-microemulsions wezigaba ezinezinhlangothi ezine kanye nezigaba ze-lamellar ngokuncika kusakhiwo 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.