Diyaarinta emulsion-ka qurxinta 2 ee 2

Isku darka saliidda wuxuu ka kooban yahay dipropyl ether saamiga 3: 1. Emulsifier hydrophilic waa 5:3 isku dhafka coco-glucoside (C8-14 APG) iyo sodium laureth sulfate (SLES) . (GMO)

Laga bilaabo nidaamka-emulsifier-free iyo saliid-la'aanta, 40% C8-14 APG/SLES isku dhafka biyaha waxay sameeyaan crystal dareere ah lix geesood. Dheecaanku waa mid aad u muuqda oo aan lagu shubin karin 25 ℃.

Kaliya qayb yar oo ka mid ah isku dhafka C8-14 APG/SLES ayaa lagu bedelay GMO hydrophobic co-surfactant si loo soo saaro weji lakab leh oo dhexdhexaad ah 23000 mPa·s at 1s-1. Ficil ahaan, tani waxay ka dhigan tahay in koollada dusha sare ee viscosity-ka sare ay noqoto koojrada dusha sare ee la shubi karo.

In kasta oo ay korodhay nuxurka GMO, marxaladda lamellar ayaa weli ah mid sugan. Si kastaba ha ahaatee, viscosity-ku si aad ah ayuu u kordhaa oo wuxuu gaaraa heerarka gelitaanka dareeraha kaas oo xitaa ka sarreeya kuwa wejiga laba geesoodka ah. Geeska GMO, isku dhafka GMO iyo biyaha waxay sameeyaan jel cubic adag. Marka saliid lagu daro, dareere laba geesood ah oo rogan ayaa la sameeyay oo leh biyo sida wajiga gudaha. Dareeraha laba geesoodka ah ee hodanka ku ah surfactants iyo dareeraha lamellar ee dareeraha ah ayaa si aad ah ugu kala duwan falcelintooda ku darida saliidda. Halka crystal dareere ah ee lix geesoodka ah uu qaadan karo oo kaliya xaddi aad u yar oo saliid ah, aagga wejiga lamellar wuxuu ku fidsan yahay meel aad uga fog geeska saliidda. Awoodda dareeraha lamellar-ka si ay u qaadato saliidda waxay si cad u kordhisaa maadada GMO ee sii kordheysa.

Microemulsions waxaa lagu sameeyay oo kaliya nidaamyo ka kooban GMO hoose. Aagga o/w microemulsions-muji-hoosaadku waxa uu ka bilaabmaa geeska APG/SLES ee ku teedsan dhidibka surfactant/saliid ilaa uu ka kooban yahay saliid ah 14%. Microemulsion-ku wuxuu ka kooban yahay 24% surfactants, 4 % coemulsifier iyo 12% saliid, taas oo ka dhigan korjoogteynta saliidda ku jirta oo leh 1600 mPa·s ee 1 S-1.

Aagga lamellar waxaa ku xiga microemulsion labaad. Microemulsion-kani waa jel saliid hodan ku ah oo leh xuubka 20,000 mPa·s at 1 S^-1(12 % surfactants, 8% coemulsifier, 20 % saliid) waxayna ku habboon tahay qubeyska xumbo dib u naafaynta. Isku dhafka C8-14 APG / SLES wuxuu ka caawiyaa nadiifinta guryaha iyo xumbo, halka isku dhafka saliidda leh uu u dhaqmo sida kabka daryeelka maqaarka. jabay inta lagu jiro habka biyo raacida, microemulsion oo leh maaddooyin ku habboon ayaa lagu qasi karaa biyo badan, taas oo sii deynaysa saliid oo u dhaqma sida kabka maqaarka.

Si loo soo koobo, alkyl glycosides waxaa lagu dari karaa isku-dhafka ku habboon iyo isku-darka saliidda si loo diyaariyo microemulsions. Waxaa lagu gartaa daahfurnaanta, xasilloonida heerkulka sare, xasilloonida kaydinta sare iyo milanka sare.

Astaamaha alkyl polyglycosides ee leh silsilado alkyl ah oo aad u dhaadheer (C16 ilaa C22) sida o/w emulsifiers ayaa xitaa aad loogu dhawaaqaa. Emulsions caadiga ah ee leh alkohol dufan leh ama glyceryl stearate sida coemulsifier iyo nidaamiye joogto ah, silsiladaha alkyl polyglycosides-dheer waxay muujinayaan xasillooni ka wanaagsan tan silsiladda dhexdhexaadka ah ee C12-14 APG ee kor lagu sharaxay. Farsamo ahaan, glycosidation-ka tooska ah ee khamriga dufanka leh ee C16-18 wuxuu keenaa isku-darka C16-18 alkyl polyglycoside iyo alkolada cetearyl kaas oo khamriga cetearyl aan si buuxda loo nadiifin karin farsamooyinka caadiga ah si looga fogaado midabka iyo ur ur. Isticmaalka aalkolada cetearyl ah ee hadhaaga ah ee isku-dheellitirka ah, is-emulsifying o/w bases ka kooban 20-60% C6/18 alkyl polyglycoside ayaa ah kuwa ugu habboon ficil ahaan samaynta kareemka la isku qurxiyo iyo kareemka oo ku salaysan gebi ahaanba alaabta ceeriin ee khudradda. Viscosity waa sahlan tahay in la isku hagaajiyo iyada oo loo marayo qadarka alkyl polyglycoside/cetearyl aalkolada waxaana lagu arkay xasillooni aad u wanaagsan, xitaa haddii ay dhacdo emollient aadka u sarreeya, sida triglycerides.