Dab tsi yog yam cuam tshuam cuam tshuam cov txiaj ntsig emulsification nqus plua plav emulsifiers?

Dab tsi yog yam cuam tshuam cuam tshuam cov txiaj ntsig emulsification nqus plua plav emulsifiers?

Qhov cuam tshuam cuam tshuam rau cov txiaj ntsig emulsification ntawm lub tshuab nqus tsev emulsifier yog raws li hauv qab no

1. Daim ntawv ntawm emulsification lub taub hau ntawm lub tshuab nqus hluav taws xob (hom khoom thiab hom txuas ntxiv) (hom nruam yog zoo dua pob)

2, lub shear nqi ntawm emulsified lub taub hau (loj dua, cov nyhuv zoo dua)

3, cov hniav tus qauv ntawm lub taub hau emulsification (muab faib rau tus hniav thawj, tus hniav nruab nrab, tus hniav zoo, tus hniav superfine, zoo dua cov hniav zoo)

4, lub sijhawm nyob ntawm cov khoom siv nyob rau hauv phab ntsa dispersion, emulsification thiab dispersion lub sijhawm (tuaj yeem raug suav tias yog lub cev muaj zog zoo tib yam, cov dej ntws tsawg dua, cov txiaj ntsig zoo dua)

5, tus lej ntawm lub voj voog ntawm lub tshuab nqus emulsifier (ntau, qhov ua tau zoo dua, cov sijhawm nyob hauv cov khoom siv, tsis tuaj yeem ua tau zoo dua)

Qhov ntsuas kub ntawm lub tshuab nqus tsev emulsifier muaj qhov cuam tshuam zoo rau emulsification, tab sis tsis muaj kev txwv nruj heev rau qhov kub. Yog tias cov roj thiab dej yog tag nrho cov kua, cov emulsification tuaj yeem ua tiav los ntawm kev nplawm ntawm chav tsev kub. Feem ntau, emulsification qhov kub nyob ntawm melting point ntawm lub siab melting point khoom muaj nyob rau hauv ob theem, thiab yam tseem ceeb xws li hom emulsifier thiab solubility ntawm cov roj theem thiab cov theem aqueous kuj tau txiav txim siab. Tsis tas li ntawd, qhov kub ntawm ob theem yuav tsum tau khaws cia ze li qhov qub, tshwj xeeb tshaj yog thaum emulsification nqa tawm ntawm waxes thiab roj cov roj theem cov txheej txheem muaj qhov chaw siab dua (siab tshaj 70 ° C), qhov kub tsis txias aqueous theem tsis tuaj yeem raug ntxiv rau tiv thaiv kom tsis txhob muaj quav, Lipid muaju nag lossis daus, ua rau muaj qhov loj lossis coarse tsis tuaj yeem emulsion. Feem ntau, nyob rau hauv emulsification, qhov kub ntawm ob qho tib si roj thiab dej tuaj yeem tswj tau li 75 ° C thiab 85 ° C. Yog tias cov roj theem muaj lub siab yaj siab ua ciab, qhov emulsification kub dua. Tsis tas li ntawd, yog tias viscosity nce siab heev thaum lub sij hawm txheej txheem emulsification, thiaj li hu ua tuab heev thiab cuam tshuam kev kub ntxhov, qee qhov kub ntxhov emulsification tuaj yeem tsim nyog nce. Yog hais tias emulsifier siv muaj qee yam theem inversion kub, emulsification qhov kub thiab txias tseem xaiv nyob ib ncig ntawm theem inversion kub. Emulsification qhov kub thiab txias qee zaum muaj cov nyhuv ntawm qhov loj ntawm cov emulsion hais. Piv txwv li, thaum lub emulsification kub tswj tau 80 ° C, emulsion qhov loj me yog li 1.8-2.0 μm, thiab qhov loj me me li 6 μm. Thaum emulsified nrog cov nonionic emulsifier, emulsification qhov kub muaj lub zog ua rau lub me me loj.

Lub sijhawm nqus emulsifier emulsification lub sijhawm

Lub sijhawm emulsification ntawm lub tshuab nqus emulsifier pom tseeb cuam tshuam qhov zoo ntawm emulsion, thiab lub sijhawm emulsification txiav txim siab raws li qhov ntim piv ntawm cov roj theem aqueous theem, qhov viscosity ntawm ob theem thiab qhov viscosity ntawm emulsion, hom thiab ntau npaum li cas ntawm emulsifier, thiab Muaj emulsification qhov kub, tab sis lub sijhawm emulsification yog ua kom lub kaw lus tag nrho emulsified, uas yog txheeb ze rau kev ua haujlwm ntawm cov khoom emulsification. Lub sijhawm emulsification tuaj yeem txiav txim siab raws li kev paub thiab sim. Yog tias emulsification nqa tawm nrog homogenizer (3000 rpm), nws tsuas yog siv 3-10 feeb xwb.

Nqus emulsifier nplawm kom nrawm

Lub tshuab nqus emulsifier emulsification cov khoom siv tau zoo nyob rau emulsification, ib qho yog qhov ua tiav ntawm kev ua kom nrawm ntawm emulsification. Kev ceev nrawm nrawm yog ua kom cov roj ntu thiab dej ntu sib tov txaus. Lub nplawm nrawm yog tsawg dhau, thiab pom tseeb lub hom phiaj ntawm kev sib xyaw txaus tsis tiav. Txawm li cas los xij, yog tias qhov kev hloov pauv sai dhau, cov npuas yuav coj mus rau hauv cov kab ke kom nws mus rau hauv peb-theem txheej txheem. Lub emulsion tsis khov. Yog li, kev nkag ntawm huab cua yuav tsum raug zam thaum muaj kev kub ntxhov, thiab lub tshuab nqus emulsifier muaj kev ua tau zoo tshaj.

Lub tshuab nqus emulsifier xaiv

(1) Lub tshuab nqus emulsifier siv cov emulsifier zoo ib yam li cov khoom emulsified;

(2) xaiv ob peb emulsifiers sib tov;

(3) xaiv cov soluble emulsifier;

(4) Lub tshuab nqus emulsifier xaiv cov emulsifier nrog hydrophilicity zoo dua thiab emulsifier nrog lipophilicity zoo dua;

(5) siv cov sib txawv hydrophilic homologous composite emulsifiers ua los ntawm cov khoom siv tib lub hauv paus hydrophobic;

(6) Kev npaj ntawm O / W kua yog tsuas yog dej-soluble emulsifier, thiab tus nqi ntawm txhua emulsifier yog ob npaug ntawm ob sab ntawm lub ntsiab emulsifier hauv HLB qhov kev txiav txim;

(7) HLB tus nqi ntawm lub tshuab nqus tsev emulsifier sau emulsifier yuav tsum muaj qhov tseem ceeb tib yam li cov sib xyaw ua kua emulsified;