Amalungiselelo e-cosmetic emulsion 2 kwangu-2

Ingxube kawoyela iqukethe i-dipropyl ether ngesilinganiso se-3:1. I-hydrophilic emulsifier iyingxube engu-5:3 ye-coco-glucoside (C8-14 APG) ne-sodium laureth sulfate (SLES).Le ngxube ye-anionic surfactant enegwebu kakhulu iyisisekelo sezinto eziningi ezakhiwe zokuhlanza umzimba.I-hydrophobic co-emulsifier i-glyceryl oleate (GMO).Okuqukethwe kwamanzi kuhlala kungashintshile ku-60%.

Ukuqala ngesistimu engenawo uwoyela ne-co-emulsifier, ingxube engu-40% ye-C8-14 APG/SLES emanzini yakha ikristalu yoketshezi eyi-hexagonal. I-surfactant paste i-viscous ephezulu futhi ayikwazi ukumpontshwa ku-25 ℃.

Ingxenye encane kuphela yengxube ye-C8-14 APG/SLES ithathelwa indawo i-hydrophobic co-surfactant GMO ukuze kukhiqizwe isigaba esinengqimba esine-viscosity emaphakathi engu-23000 mPa·s ku-1s-1. Empeleni, lokhu kusho ukuthi i-viscosity surfactant paste ephezulu iba i-pumpable surfactant concentrate.

Naphezu kokuqukethwe kwe-GMO okwandisiwe, isigaba se-lamellar sihlala sinjalo. Kodwa-ke, i-viscosity ikhula kakhulu futhi ifinyelela emazingeni ejeli ewuketshezi angaphezu kwalawo esigaba se-hexagonal. Ekhoneni le-GMO, ingxube ye-GMO namanzi yakha ijeli eqinile ye-cubic. Lapho amafutha engezwa, uketshezi olunezinhlangothi ezine eziphambene kwakheka ngamanzi njengesigaba sangaphakathi. Ikristalu engu-hexagonal· liquid crystal ecebile ngama-surfactants kanye nekristalu ewuketshezi ye-lamellar ihluke kakhulu ekuphenduleni kwayo ekufakweni kukawoyela. Nakuba ikristalu yoketshezi eyi-hexagonal ingathatha kuphela amanani amancane kakhulu kawoyela, indawo yesigaba se-lamellar inwebela kude ngasekhoneni likawoyela. Amandla e-lamellar liquid crystal ukuthatha uwoyela akhuphuka ngokusobala ngokwanda kokuqukethwe kwe-GMO.

Ama-Microemulsions akhiwa kuphela ezinhlelweni ezinokuqukethwe okuphansi kwe-GMO. Indawo ye-low-viscosity o/w microemulsions isuka ekhoneni le-APG/SLES eduze ne-surfactant/axis kawoyela ifike ku-oyela conte engu-14%. i-microemulsion iqukethe ama-surfactants angu-24%, 4 % coemulsifier kanye no-12% kawoyela, emele i-surfactant equkethe uwoyela ene-viscosity engu-1600 mPa·s ku-1 S-1.

Indawo ye-lamellar ilandelwa yi-microemulsion yesibili. Le microemulsion iyijeli enothe ngowoyela ene-viscosity engu-20,000 mPa·s ku-1 S.^-1(12 % ama-surfactants, 8% coemulsifier, 20 % amafutha) futhi ifaneleka njengendawo yokugeza yegwebu ephinda igcobe. Ingxube ye-C8-14 APG / SLES isiza ekuhlanzeni izakhiwo kanye namagwebu, kuyilapho ingxube yamafutha isebenza njengesengezo sokunakekelwa kwesikhumba.Ukuze uthole umphumela wokuxuba we-microemulsion, amafutha kufanele akhululwe, okungukuthi, i-microemulsion kufanele ibe iphukile ngesikhathi sokusetshenziswa.Ngesikhathi sokuhlanza, i-microemulsion enezithako ezifanele ihlanjululwa ngamanzi amaningi, ekhulula amafutha futhi isebenze njengesengezo esikhumbeni.

Ukufingqa, i-alkyl glycosides ingahlanganiswa nama-co-emulsifiers afanelekile nezingxube zikawoyela ukuze kulungiswe ama-microemulsions. Ibonakala ngokungafihli, ukuzinza kwezinga lokushisa eliphezulu, ukuzinza okuphezulu kwesitoreji kanye nokuncibilika okuphezulu.

Izici ze-alkyl polyglycosides ezinamaketanga e-alkyl amade uma kuqhathaniswa (C16 kuya ku-C22) njengama-o/w emulsifiers agqama nakakhulu. Kuma-emulsion avamile anotshwala obunamafutha noma i-glyceryl stearate njenge-coemulsifier kanye nesilawuli esingaguquguquki, ama-alkyl polyglycosides anochungechunge olude abonisa ukuzinza okungcono kune-medium-chain C12-14 APG echazwe ngenhla. Ngobuchwepheshe, i-glycosidation eqondile ye-C16-18 fatty alcohol iholela engxubeni ye-C16-18 alkyl polyglycoside kanye ne-cetearyl alcohol lapho utshwala be-cetearyl bungenakuchithwa ngokuphelele ngamasu avamile ukugwema ukuwohloka kombala nephunga. Ukusebenzisa i-cetearyl alcohol eyinsalela njenge-co-emulsifier, izisekelo ezizikhandlayo ze-o/w eziqukethe u-20-60% C6/18 i-alkyl polyglycoside yizo ezifaneleke kakhulu ekusebenzeni ekwenzeni ama-creme nezimonyo ezisuselwe ngokuphelele ezintweni ezingavuthiwe zemifino. I-viscosity kulula ukuyilungisa ngenani le-alkyl polyglycoside/cetearyl alcohol compound kanye nokuzinza okuhle kakhulu kuyabonakala, ngisho nasezimeni ezithinta umoya we-polar kakhulu, njenge-triglycerides.