Video: HLB ntawm surfactant xam li cas?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
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 kev sib npaug hauv qab no: HLB xav tau = (% surfactant A) × ( HLB Surfactant A) + (% surfactant B) × ( HLB Surfactant B.)
Ib yam li ntawd, 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.
Qhov thib ob, HLB tus nqi piav qhia yog dab tsi? HLB (Hydrophile-Lipophile Balance) yog ib qho kev qhia txog kev sib raug zoo ntawm hydrophilic ("dej-hlub") thiab hydrophobic ("dej-ntxub") pawg ntawm surfactant. Cov lus hauv qab no teev HLB values nrog rau kev ua haujlwm tau zoo. Siab dua HLB value , qhov ntau dej-soluble surfactant.
Qhov thib ob, koj ua li cas xam HLB nqi ntawm cream?
HLB ; Raws li Griffin, amphiphilic molecule yog tus nqi tau los ntawm kev faib qhov hnyav feem pua ntawm qhov hydrophilic ib feem ntawm tsib. Muaj qhov sib npaug ntawm hydrophilic thiab lipophilic ntu ntawm amphiphilic molecules. Qhov no yog qhia raws li qhov sib npaug ntawm hydrophilic-lipophilic ( HLB ).
Qhov feem pua ntawm cov roj theem yog xam li cas rau ib qho emulsion?
The HLB of an roj theem sib tov tau xam thawj zaug xam tus feem pua ntawm roj theem txhua qhov khoom txhawb. Qhov no feem pua tom qab ntawd muab faib los ntawm HLB qhov xav tau rau txhua qhov ntawm cov khoom xyaw thiab cov txiaj ntsig tau suav nrog.
Pom zoo:
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Rho tawm qhov tsawg kawg ntawm qhov siab tshaj plaws. Qhov no yog qhov ntau. Hauv qhov piv txwv, 500,000 rho 350,000 sib npaug 150,000. Faib qhov ntau los ntawm qhov tsawg kawg kom pom qhov sib kis
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Koj xam xam tag nrho cov neeg yuav khoom li cas?
Hloov chaw, tag nrho cov kev yuav khoom yuav tsum raug xam los ntawm kev ntxiv cov khoom muag kawg rau tus nqi ntawm cov khoom muag thiab rho tawm cov khoom pib pib. Feem ntau cov tuam txhab yuav muaj cov ntaub ntawv khaws tseg ntawm kev yuav khoom, yog li qhov kev suav no yuav tsis xav tau
HLB surfactant yog dab tsi?
HLB (Hydrophile-Lipophile Balance) yog qhov qhia tawm rau kev sib raug zoo ntawm hydrophilic ('dej hlub') thiab hydrophobic ('dej-hating') pawg ntawm surfactant. Cov lus hauv qab no teev cov txiaj ntsig HLB nrog rau kev ua haujlwm zoo. Qhov siab dua tus nqi HLB, ntau dua cov dej-soluble surfactant