HLB surfactant yog dab tsi?
HLB surfactant yog dab tsi?

Video: HLB surfactant yog dab tsi?

Video: HLB surfactant yog dab tsi?
Video: HLB number determination by Saponification method - By Khalifa M Y 2024, Kaum ib hlis
Anonim

HLB (Hydrophile-Lipophile Balance) yog qhov kev qhia ua haujlwm rau kev sib raug zoo ntawm hydrophilic ("dej-hlub") thiab hydrophobic ("dej-hating") pawg ntawm surfactant . Cov lus hauv qab no teev HLB muaj nuj nqis nrog rau cov khoom ua tau zoo. Siab dua HLB tus nqi, dej ntau-soluble tus surfactant.

Tib neeg tseem nug, HLB tus nqi ntawm surfactants yog dab tsi?

Surfactants feem ntau yog amphiphilic molecules uas muaj ob pawg hydrophilic thiab lipophilic. Qhov sib npaug ntawm hydrophile-lipophile ( HLB ) tus lej yog siv los ntsuas qhov piv ntawm cov pab pawg no. Nws yog ib qho tus nqi nruab nrab ntawm 0-60 txhais cov affinity ntawm a surfactant rau dej los yog roj.

Ntxiv mus, HLB yog dab tsi? Huanglongbing ( HLB lossis citrus ntsuab) yog cov kab mob kis los ntawm cov kab me me hu ua Asian Citrus Psyllid. Tus kab mob hloov txiv hmab txiv ntoo iab thiab nws thiaj li tua tsob ntoo.

Hauv txoj kev no, HLB ntawm surfactant xam tau li cas?

Piv txwv li, a surfactant nrog ib HLB tus nqi ntawm 9.8 uas tsis yog yaj hauv dej. Txoj kev daws yog sib tov ob surfactants ntawm paub HLB , ib siab thiab ib tug qis. Siv cov hauv qab no sib npaug : HLB xav tau = (% surfactant A) × ( HLB Surfactant A) + (% surfactant B) × ( HLB Surfactant B.)

HLB xav tau dab tsi?

Required HLB Qhov no txhais tau tias yog surfactant, lossis sib xyaw ntawm surfactants muaj HLB ntawm 10 feem ntau yuav ua rau muaj kev ruaj khov & muaj kua O/W emulsion nrog cov ntxhia roj ntau dua li cov surfactants ntawm lwm yam HLB.

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