Kev loj hlob ntawm kev lag luam ruaj khovcov tshuaj surfactantsthoob ntiaj teb tau tsim ib puag ncig zoo rau kev txhim kho thiab nthuav dav ntawm kev lag luam tshuaj pleev ib ce, nrog rau cov kev cai nruj dua rau cov qauv khoom, ntau yam, kev ua tau zoo thiab cov thev naus laus zis. Yog li ntawd, nws yog qhov tsim nyog los tsim cov surfactants uas muaj kev nyab xeeb, mos, yooj yim biodegradable thiab muaj cov haujlwm tshwj xeeb, kom tso lub hauv paus theoretical rau kev txhim kho thiab kev siv cov khoom tshiab. Yuav tsum muab qhov tseem ceeb rau kev txhim kho glycoside surfactants, thiab ntau yam polyol thiab cawv surfactants tuaj yeem tsim tau; kev tshawb fawb thiab kev txhim kho ntawm cov soybean phospholipid surfactants yuav tsum tau ua; ib qho ntawm cov khoom sucrose fatty acid ester yuav tsum tau tsim, kev tshawb fawb ntawm cov thev naus laus zis sib xyaw yuav tsum tau ua kom muaj zog, thiab qhov kev siv ntawm cov khoom uas twb muaj lawm yuav tsum tau nthuav dav.
Kev ua kom cov emulsificationHais txog qhov xwm txheej uas cov tshuaj uas tsis yaj hauv dej tau sib xyaw ua ke hauv dej los ua cov emulsion. Hauv cov tshuaj pleev ib ce, cov emulsifiers feem ntau yog siv los tsim cov tshuaj pleev thiab tshuaj pleev. Cov tshuaj pleev hmoov uas feem ntau yaj thiab cov tshuaj pleev tsis yaj yog cov roj hauv dej (O/W), uas tuaj yeem emulsified nrog anionic emulsifier fatty acid xab npum (xab npum). Nws yooj yim heev rau kev npaj cov emulsions uas muaj roj tsawg siv xab npum, thiab cov nyhuv gelling ntawm xab npum tuaj yeem muab cov emulsions nrog viscosity siab. Cov tshuaj pleev txias uas muaj ntau cov roj theem feem ntau yog dej hauv roj (W/O), uas tuaj yeem emulsified nrog lanolin ntuj uas muaj zog nqus dej thiab viscosity siab. Cov emulsifiers uas tsis yog ionic yog cov siv dav tshaj plaws tam sim no vim lawv muaj kev nyab xeeb thiab tsis khaus. Solubilization hais txog qhov xwm txheej uas cov tshuaj yaj me ntsis lossis cov tshuaj tsis yaj tau nce solubility ntau dua. Thaum cov surfactants raug ntxiv rau hauv dej, qhov kev nruj ntawm qhov chaw ntawm dej poob qis thaum xub thawj, ua raws li kev tsim cov micelles sib sau ua ke los ntawm cov surfactant molecules. Qhov concentration ntawm surfactants xav tau rau kev tsim micelle hu ua qhov tseem ceeb micelle concentration. Thaum qhov tseem ceeb ntawm surfactant mus txog qhov tseem ceeb micelle concentration, micelles tuaj yeem nqus cov roj lossis cov khoom khov ntawm lawv qhov kawg lipophilic, yog li txhim kho qhov solubility ntawm cov tshuaj me ntsis soluble lossis insoluble.
Cov tshuaj yajHauv cov tshuaj pleev ib ce feem ntau yog siv rau hauv kev tsim cov tshuaj pleev ib ce, cov roj loj hlob ntawm cov plaub hau thiab cov neeg sawv cev rau cov plaub hau. Cov khoom xyaw roj hauv cov tshuaj pleev ib ce, xws li cov tshuaj tsw qab, roj thiab cov vitamins uas yaj tau hauv roj, tsim cov txheej txheem sib txawv vim muaj qhov sib txawv hauv lawv cov qauv thiab polarities, yog li cov surfactants tsim nyog yuav tsum tau xaiv ua cov tshuaj yaj. Piv txwv li, cov tshuaj uas yuav tsum tau yaj hauv cov tshuaj pleev ib ce suav nrog cov tshuaj tsw qab, roj thiab cov khoom xyaw tshuaj, yog li alkyl polyoxyethylene ethers tuaj yeem siv rau kev yaj. Txawm hais tias alkylphenol polyoxyethylene ethers (OP series, TX series) muaj peev xwm yaj tau zoo, feem ntau lawv tsis siv vim lawv ua rau lub qhov muag khaus. Tsis tas li ntawd, amphoteric derivatives raws li cov roj castor qhia txog kev yaj zoo heev rau cov roj tsw qab thiab cov roj zaub, thiab cov surfactants no tsis ua rau lub qhov muag khaus, ua rau lawv tsim nyog rau kev tsim cov tshuaj zawv plaub hau me me thiab lwm yam khoom siv pleev ib ce.
Lub sijhawm tshaj tawm: Lub Rau Hli-30-2026