Peb cov khoom tseem ceeb: block silicone, hydroxilic silicone, carbon monoxent (fluorone, Uzbekistan, thiab lwm yam, ntau yam ntxiv thov hu rau: Mandy +86 19856618619 (WhatsApp)

Nrog kev txhim kho ntawm tib neeg cov qauv kev nyob, cov neeg siv khoom muaj txiaj ntsig zoo rau cov khoom noj uas tsim nyog, tab sis kuj yuav tsum muaj cov khoom noj muaj txiaj ntsig, tab sis kuj tseem muaj kev txaus siab, xim daj, saj, tshiab, thiab lwm yam.

Emulsifiers, raws li cov zaub mov ntxiv rau kev mob khaub thuas, ua lub luag haujlwm tseem ceeb hauv kev lag luam khoom noj. Cia peb saib ntawm cov txheej txheem ntawm kev ua ntawm emulsifiers!

Emulsion

Cov khoom emulsion ib yam hauv cov khoom noj muaj dej los yog aqueous daws, sib xyaw ua ke rau cov theem hydrophilic; Lwm theem yog ib qho theem organic uas yog immiscible nrog dej, tseem hu ua lipophilic theem. Ob yam dej tsis tau los, xws li dej thiab roj, tuaj yeem tsim ob hom emulsions thaum sib xyaw (O / W) thiab dej hauv cov roj (w / o) emulsions.

Nyob rau hauv cov dej hauv cov roj emulsion, roj yog dispersed raws li cov tee dej me me hauv dej, nrog cov roj roj thiab dej ua kom tawg. Piv txwv li, nyuj lub mis yog ib qho o / w emulsion; Hauv dej hauv cov roj emulsions, qhov sib txawv yog qhov tseeb. Dej yog dispersed raws li cov tee dej me me nyob rau hauv cov roj, nrog dej ua cov theem dispersing thiab roj ua qhov nruab nrab dispersing. Piv txwv, cov khoom cuav butter yog hom w / o emulsion.

Cov txheej txheem ntawm kev ua ntawm emulsifiers

Khoom noj khoom haus emulsifiers, tseem hu ua surfactants, yog cov tshuaj uas hloov cov kua kus ua rau cov theem tsis sib xws (emulsions). Thaum ntxiv rau cov zaub mov, lawv tuaj yeem txo cov roj cuam tshuam ntawm cov roj thiab dej tsis sib thooj) thiab cov tshuaj uas tsis sib xws li cov khoom noj ntxiv.

Ntawm ib sab tes, emulsifiers ua ib qho txheej txheem molecular nyias ib nrab ntawm cov theem uas tsis muaj zog ntawm tag nrho cov kab ke thiab ua cov tshiab tag nrho. Emulsifier lwg muaj hydrophilic thiab cov pab pawg ntawm cov roj uas tsis muaj peev xwm ntawm cov roj thiab dej sib xyaw ua ke thiab txo cov kev cuam tshuam sib xyaw ntawm ob ntu. Ntawd yog, lub oleophilic ib feem ntawm cov roj molecule thiab emulsifier yog nyob rau ib sab ntawm dej molecule thiab emulsifier nyob sab tod. Qhov kev cuam tshuam no ntawm ob qhov ua rau muaj kev hloov pauv hauv interfacial nro;

Ntawm qhov tod tes, los ntawm kev tsim cov txheej txheem tiv thaiv kev tiv thaiv nyob rau saum npoo ntawm cov tee dej, nws xaus cov kua paug nrog cov muaj zog spatial ruaj khov. Qhov ntau emulsifiers tau ntxiv, ntau dua qhov txo qis hauv interfacial nro. Qhov no tso cai rau yav dhau los cov tshuaj tsis zoo los ua kev sib xyaw ua ke, yog kev hloov kho lub cev qub, yog li kev txhim kho sab hauv cov zaub mov thiab txhim kho nws cov zaub mov zoo.
Hydrophilic thiab oleophilic equilibrium nqi

Feem ntau, emulsifiers nrog muaj zog hydrophilicity form roj / dej emulsions, thaum emulsifiers nrog muaj zog hydrophilicity tsim dej / roj emulsions. Txhawm rau qhia txog cov khoom siv hydrophilic thiab lipophilic tshuav nyiaj ntawm emulsifiers, HLB tus nqi (Hydrophilic tshuav nyiaj) feem ntau yog siv los sawv cev rau hydulphilicity ntawm emulsifiers. Muaj ntau txoj kev xam kev xam rau HLB tus nqi,

Cov Qauv Sib Txawv: HLB = Hydrophilicity ntawm Hydrophilic Pab Pawg - Hydrophobicity ntawm Lipophilic Pab Pawg

Piv txwv: hlb = hydrophilicity ntawm hydrophilic pab pawg / hydrophobicity ntawm oleophilic pab pawg

Tus nqi HLB ntawm txhua emulsifier tuaj yeem txiav txim siab los ntawm cov kev sim. Rau emulsifiers nrog 100% lipophilicity, lawv HLB yog 0 (sawv cev los ntawm cov tshuaj Paraffin oleat to), thiab muab faib ua cov roj ntsha ua kom muaj zog ntawm lawv cov hydrophilicity thiab oleophilicity thiab oleophilicity thiab oleophilicity. Qhov loj dua tus nqi HLB, lub zog hydrophilicity, thiab tus me dua tus nqi HLB, tus muaj zog dua lub oleophilicity.

Feem coob ntawm cov khoom noj emulsifiers tsis yog-ionic surfactants nrog cov nqi hlues thiab muaj feem sib xws ntawm cov khoom tsis yog-ionic muaj nyob hauv lub rooj; Tus nqi HLB ntawm ionic surfactants yog 0-40. Yog li ntawd, emulsifiers nrog HLB qhov tseem ceeb <10 yog feem ntau lipophilic, thaum emulsifiers nrog HLB qhov tseem ceeb ≥ 10 muaj hydrophilic yam ntxwv.

Rau kev sib xyaw emulsifiers, lawv cov nqi hlb muaj cov khoom ntxiv. Yog li ntawd, thaum ob lossis ntau emulsifiers tau muab sib xyaw thiab siv, tus nqi HLB ntawm cov feem ntau ntawm txhua qhov emulsifier hauv nws cov khoom lag luam:

HLBA, B = HAUC A% + HLBBAH B%

Nyob rau hauv cov mis,

HLBA, B yog tus nqi HLB ntawm emulsifier a, b sib xyaw ua ke;

HLBA THIAB HLBB yog HLB qhov tseem ceeb ntawm Emulsifiers A thiab B, feem;

Ib% thiab B% thiab B% yog qhov feem pua ​​cov ntsiab lus ntawm A thiab B hauv cov tshuaj sib xyaw, ntsig txog (cov qauv no tsuas yog siv rau cov tsis-ionic emulsifiers).
Kev npaj npaj thiab cuam tshuam txog cov ntsiab lus ntawm emulsifiers

Muaj plaub txoj kev rau kev npaj emulsifiers, uas yog cov qauv dej, cov roj-roj-roj sib xyaw ua ke, thiab hom kev sib xyaw ua ke.

Cov roj av gel qhuav, uas cuam tshuam ntxiv dej rau ib theem roj uas muaj emulsifiers. Thaum npaj siv roj hmab, hmoov roj hmab (emulsifier) ​​yog thawj zaug ntawm cov roj, ib qho nyiaj tau ntxiv, thiab emulsified rau hauv colostrum, thiab tom qab ntawd diluted nrog dej rau tag nrho cov nyiaj.

Ntub gel txoj kev, uas cuam tshuam nrog cov roj ntxiv rau theem dej uas muaj emulsifiers. Thaum npaj, gel (emulsifier) ​​yog thawj yaj nyob rau hauv dej los ua ib tug slurry raws li cov dej theem. Tom qab ntawd, cov roj kub tau ntxiv rau theem dej hauv theem, hauv av rau hauv colostrum, thiab dej ntxiv rau tag nrho cov nyiaj.

Sib tov cov roj thiab cov theem dej thiab ntxiv rau lawv cov emulsifier, sib xyaw ua ke ntawm cov roj thiab dej. Zawv cov pos hniav Arabic rau hauv lub tshuaj khib, tom qab ntawd zom cov roj-dej sib tov rau hauv colostrum, thiab dilute nrog dej.

Kev npaj ntawm emulsifiers feem ntau yog emulsifying ob kua, thiab cov khoom zoo ntawm emulsification muaj qhov cuam tshuam tseem ceeb ntawm qhov zoo ntawm emulsion.

Qhov cuam tshuam uas cuam tshuam nrog emulsification feem ntau suav nrog interfacial nro, viscosity thiab qhov kub, thiab cov nyiaj emulsifier siv. Emulsifiers uas tuaj yeem txo qis kev cuam tshuam interfacial feem ntau xaiv; Qhov feem ntau haum emulsification kub rau emulsifiers nyob ib ncig ntawm 70 ℃. Yog tias cov tsis yog-ionic surfactants yog siv ua emulsifiers, tus emulsification kub yuav tsum tsis pub tshaj lawv lub ncov kub siab heev; Qhov ntau emulsifiers tau siv, cov ruaj khov emulsion tsim.

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#silicone chaw tsim khoom #