Video: Dab tsi yog emulsion thiab nws hom?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Muaj ob qho yooj yim hom ntawm emulsions : roj-hauv-dej (O/W) thiab dej-hauv-roj (W/O). Cov no emulsions yog qhov tseeb lawv zoo li cas, raws li duab hauv qab no. Hauv txhua emulsion muaj ib ntu tsis tu ncua uas tshem tawm qhov poob ntawm lwm yam uas yog hu ua dispersedphase.
Hauv qhov no, peb hom emulsion yog dab tsi?
Muaj peb hom emulsions : ib ntus, semi-permanent, thiab mus tas li. Ib qho piv txwv ntawm ib ntus emulsion yog ib qho yooj yim vinaigrette thaum mayonnaise yog apermanent emulsion . Ib emulsion tuaj yeem kub lossis txias thiab noj txhua yam tsw qab los ntawm qab zib mus rau savory; nws tuaj yeem ua tau zoo lossis muaj me ntsis kev ntxhib los mos.
Tsis tas li ntawd, emulsion system yog dab tsi? Txhais. Emulsions yog ib pawg ntawm kev sib cais tshuab suav nrog ob lub kua tsis paub qab hau. Cov kua dej (theem disperse) yog dispersed hauv cov kua nruab nrab (thecontinuous phase). Tsis tas li ntawd, lawv tuaj yeem ua kom ruaj khov emulsion tiv thaiv flocculation thiab coalescence.
Zoo sib xws, koj txhais li cas los ntawm emulsions pes tsawg hom emulsions?
Emulsions yog biphasic cov tshuab ua kua uas muaj ob theem ua kua tsis tau. Cov theem no yog tam sim no insuch li txoj kev uas ib theem yog dispersed nyob rau hauv lwm yam nruamphase. Emulsions yog ib feem ntawm cov chav kawm dav dav ntawm ob theem ntawm cov teeb meem hu ua colloids.
Hom twg ntawm emulsion yog qab zib?
Qab zib yog ib nrab khoom emulsions ntawm roj thiab dej. Lawv muab faib ua ob qho hom Cov roj hauv dej (O / W) qab zib uas yog tsim los ntawm cov tee me me ntawm cov roj tawg hauv ntu dej txuas mus, thiab dej-hauv-roj (W/O) qab zib uas yog tsim los ntawm me me tee dej dispersed nyob rau hauv acontinuous oily theem.
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