Qhov sib txawv tseem ceeb ntawm lipophilic thiab hydrophilic emulsifier yog tias lipophilic emulsifiers ua haujlwm nrog roj-raws li emulsions whereas hydrophilic emulsifiers ua haujlwm nrog dej-raws li emulsions.
Ib qho emulsifier yog cov tshuaj lom neeg uas tso cai rau peb kom ruaj khov ntawm emulsion. Qhov ntawd txhais tau tias; nws tiv thaiv kev sib cais ntawm cov kua uas feem ntau tsis sib tov nrog ib leeg. Nws ua li ntawd los ntawm kev ua kom lub kinetic stability ntawm qhov sib tov. Ib qho piv txwv zoo ntawm emulsifier yog surfactants. Muaj ob hom emulsifiers li lipophilic emulsifiers thiab hydrophilic emulsifiers.
Lipophilic Emulsifier yog dab tsi?
Lipophilic emulsifiers yog cov emulsifying cov neeg ua haujlwm uas ua haujlwm nrog cov roj emulsions. Cov tshuaj reagents no yog ib qho tseem ceeb hauv kev tshem tawm ib qho penetrant thaum muaj teeb meem vim kev ntxuav ntau dhau ntawm emulsion yog ib qho kev txhawj xeeb. Ntawm no, lipophilic emulsifiers tuaj yeem ua rau cov neeg nkag siab ntau dua tshem tau nrog kev ntxuav siv dej. Feem ntau, lipophilic emulsifiers yog cov khoom siv roj thiab cov reagents yog tsim los ua cov neeg ua haujlwm npaj siv los ntawm cov chaw tsim khoom.
Daim duab 01: Emulsifying Action
Lipophilic emulsifiers tau tsim thaum xyoo 1950. Cov neeg ua haujlwm no tuaj yeem ua haujlwm tau zoo nrog ob qho tshuaj lom neeg thiab kev ua haujlwm. Yog li ntawd, tom qab lipophilic emulsifier tau coated rau saum npoo ntawm cov khoom (emulsion), peb tuaj yeem siv txhua yam kev txiav txim kom tshem tawm ntau dhau kev nkag mus.
Hydrophilic Emulsifier yog dab tsi?
Hydrophilic emulsifiers yog emulsifying cov neeg ua haujlwm nrog dej-raws li emulsions. Zoo ib yam li lipophilic emulsifiers, cov tshuaj reagents no kuj tseem ceeb heev rau kev tshem tawm qhov tsis xws luag thaum ntxuav ntau dhau ntawm emulsion yog ib qho kev txhawj xeeb. Ntawm no, lipophilic emulsifiers tuaj yeem ua rau cov neeg nkag siab ntau dua tshem tau nrog kev ntxuav siv dej. Feem ntau, hydrophilic emulsifiers yog cov khoom siv dej thiab yog tsim los ntawm cov chaw tsim khoom. Yog li ntawd, peb yuav tsum tau dilute qhov concentration ntawm hydrophilic emulsifier siv dej mus rau ib tug nyiam concentration ua ntej siv.
Qhov kev txiav txim ntawm hydrophilic emulsifier yog qhov sib txawv ntawm lipophilic emulsifiers vim tias tsis muaj qhov sib txawv tshwm sim thaum lub sijhawm emulsifying txheej txheem. Qhov tseeb, cov no yog cov tshuaj ntxuav tes uas muaj cov kuab tshuaj thiab cov tshuaj surfactants. Lub hydrophilic emulsifier rhuav tshem cov nkag mus rau hauv me me thiab tiv thaiv kev sib txuas ntawm cov khoom hauv emulsion. Txoj kev no tau nthuav tawm thaum xyoo 1970s. Qhov txiaj ntsig tseem ceeb ntawm kev siv hydrophilic emulsifier yog tias nws tsis tshua nkag siab rau qhov sib txawv ntawm kev sib cuag thiab lub sijhawm tshem tawm. Txawm li cas los xij, yog tias peb siv lipophilic emulsifier, tom qab ntawd qhov kev hloov pauv me me li 15 vib nas this tuaj yeem ua rau muaj txiaj ntsig zoo rau qhov kawg tshwm sim.
Qhov txawv ntawm Lipophilic thiab Hydrophilic Emulsifier yog dab tsi?
Ib qho emulsifier yog ib qho tshuaj tua kab mob uas tuaj yeem ua kom ruaj khov ntawm emulsion los ntawm kev tiv thaiv nws los ntawm kev sib cais rau hauv nws cov khoom. Muaj ob hom emulsifiers loj li lipophilic emulsifiers thiab hydrophilic emulsifiers. Qhov sib txawv tseem ceeb ntawm lipophilic thiab hydrophilic emulsifier yog tias lipophilic emulsifiers ua haujlwm nrog roj-raws li emulsions whereas hydrophilic emulsifiers ua haujlwm nrog dej-raws li emulsions.
Ntxiv mus, lipophilic emulsifiers tuaj rau hauv daim ntawv npaj siv thaum hydrophilic emulsifiers tuaj rau hauv cov ntsiab lus yog li peb yuav tsum tau dilute nrog dej ua ntej siv nws. Tsis tas li ntawd, siv hydrophilic emulsifier yog qhov muaj txiaj ntsig zoo dua thaum muaj kev hloov pauv hauv lub sijhawm yuav tsum tsis txhob cuam tshuam rau qhov tshwm sim vim lipophilic emulsifiers tuaj yeem nkag siab rau lub sijhawm me me xws li 15 vib nas this.
Cov ntawv qhia hauv qab no qhia txog qhov sib txawv ntawm lipophilic thiab hydrophilic emulsifier.
Summary – Lipophilic vs Hydrophilic Emulsifier
Ib qho emulsifier yog ib qho tshuaj tua kab mob uas tuaj yeem ua kom ruaj khov ntawm emulsion los ntawm kev tiv thaiv nws los ntawm kev sib cais rau hauv nws cov khoom. Muaj ob hom emulsifiers loj li lipophilic emulsifiers thiab hydrophilic emulsifiers. Qhov sib txawv tseem ceeb ntawm lipophilic thiab hydrophilic emulsifier yog tias lipophilic emulsifiers ua haujlwm nrog roj-raws li emulsions whereas hydrophilic emulsifiers ua haujlwm nrog dej-raws li emulsions.
