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Emulsification thiab solubilization ntawm surfactants
Surfactants yog cov chav kawm loj ntawm cov organic tebchaw nrog cov khoom tshwj xeeb, hloov tau yooj yim thiab siv tau dav, thiab muaj txiaj ntsig zoo. Surfactants tau siv los ua emulsifiers, detergents, wetting agents, penetrating agents, foaming agents, solvents, dispersants, suspending agents, cement water reducers, fabric softeners, leveling agents, fixing agents, disinfectants, catalysts, waterproofing agents, anti fouling agents, lubricants. , acid fog agents, hmoov av pov thawj, preservatives, kis tus neeg sawv cev, thickeners, membrane penetrating agents, flotation agents, leveling agents, oil displacement agents, anti-caking agents, deodorizers, anti-static agents, deg modifiers, deg modifiers thiab ntau ntau lwm yam kev ua haujlwm reagents hauv lub neej niaj hnub thiab ntau yam kev lag luam thiab kev ua liaj ua teb. Ntxiv nrog rau kev siv dav hauv kev lag luam tshuaj ntxuav tes thiab tshuaj pleev ib ce, surfactants kuj tseem siv los ua adjuvants lossis additives hauv kev lag luam ib txwm muaj xws li zaub mov, khoom noj siv mis, papermaking, tawv, iav, roj av, tshuaj fibers, textiles, luam ntawv thiab dyeing, painting, pharmaceuticals. , tshuaj tua kab, zaj duab xis, yees duab, electroplating, hlau ua, ntxhia ua, cov ntaub ntawv tshiab, kev lag luam tu, kev tsim kho, zoo li high-tech teb. Txawm hais tias lawv feem ntau tsis yog lub hauv paus tseem ceeb ntawm cov khoom lag luam, lawv tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev ntxiv cov khoom tiav rau kev tsim khoom ntawm ntau yam khoom. Txawm hais tias nws qhov kev siv tsis loj, nws tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj ntau yam khoom, txo kev siv, txuag hluav taws xob, thiab txhim kho kom zoo.
Kev loj hlob tsis tu ncua ntawm surfactants thoob ntiaj teb muab qhov chaw zoo rau sab nraud rau kev txhim kho thiab kev loj hlob ntawm kev lag luam tshuaj pleev ib ce, thiab cov kev xav tau ntawm cov khoom tsim, ntau yam, kev ua tau zoo, thiab kev siv tshuab kuj nce ntxiv. Yog li ntawd, nws yog ib qho tsim nyog los tsim cov surfactants uas muaj kev nyab xeeb, me me, yooj yim biodegradable, thiab muaj cov teebmeem tshwj xeeb, muab lub hauv paus theoretical rau kev txhim kho thiab siv cov khoom tshiab. Peb yuav tsum tsom rau kev tsim glycoside surfactants, suav nrog ntau yam polyols thiab cawv surfactants; Kev tshawb fawb thiab kev loj hlob ntawm soybean phospholipid surfactants; Tsim cov khoom lag luam sucrose fatty acid vinegar, ntxiv dag zog rau kev tshawb fawb ntawm kev siv tshuab ua ke, thiab nthuav dav daim ntawv thov ntawm cov khoom uas twb muaj lawm.
Lub phenomenon ntawm uniformly emulsifying uas tsis yog dej soluble tshuaj nyob rau hauv dej los tsim ib tug emulsion yog hu ua emulsification. Emulsifiers feem ntau yog siv los tsim cov cream thiab tshuaj pleev ib ce hauv tshuaj pleev ib ce. Cov hmoov ntau raws li cov nplaum nplaum thiab Zhongxing snow cream yog ob qho tib si O / W emulsions, uas tuaj yeem ua emulsified nrog anionic emulsifier fatty acid xab npum (xov xab npum). Nws yooj yim dua los tsim emulsions nrog cov roj tsawg los ntawm emulsifying nrog xab npum, thiab cov nyhuv gelling ntawm xab npum tuaj yeem ua rau nws muaj viscosity ntau dua. Rau cov tshuaj nplaum txias uas muaj cov roj ntau ntau, emulsions feem ntau yog hom W / O, thiab ntuj lanolin emulsions nrog dej siab thiab viscosity tuaj yeem xaiv rau emulsification. Feem ntau siv tam sim no yog non-ionic emulsifiers, vim lawv txoj kev nyab xeeb thiab qis qis.
Lub phenomenon ntawm nce lub solubility ntawm me ntsis soluble los yog insoluble tshuaj hu ua solubilization. Thaum cov surfactants ntxiv rau hauv dej, qhov nro ntawm cov dej pib txo qis, ua rau tsim cov micelles qhov twg surfactant molecules aggregate. Qhov concentration ntawm surfactants siv los tsim micelles yog hu ua qhov tseem ceeb micelle concentration. Thaum cov concentration ntawm surfactants mus txog qhov tseem ceeb micelle concentration, micelles tuaj yeem nqus cov roj los yog cov khoom ntawm ib qho kawg ntawm lipophilic pawg, yog li ua kom cov solubility ntawm micro soluble lossis insoluble tshuaj.
Ntxiv cov kuab tshuaj nyob rau hauv cov tshuaj pleev ib ce yog tsuas yog siv nyob rau hauv zus tau tej cov toners, plaub hau roj, thiab cov plaub hau kev loj hlob thiab nourishment agents. Oily Cheebtsam hauv cov tshuaj pleev ib ce, xws li tshuaj tsw qab, roj, thiab roj soluble vitamins, muaj ntau cov ntaub ntawv solubilization vim lawv cov qauv thiab cov polar sib txawv. Yog li ntawd, tsim nyog surfactants yuav tsum tau xaiv raws li solubilizers. Yog tias cov khoom solubilizing ntawm toner yog cov tshuaj tsw qab, roj, thiab tshuaj, alkyl polyoxyethylene ether tuaj yeem siv rau solubilization.
Txawm hais tias alkylphenol polyoxyethylene ethers (OP thiab TX) muaj peev xwm solubilization muaj zog, lawv ua rau khaus qhov muag thiab feem ntau tsis siv. Tsis tas li ntawd, castor roj-raws li amphoteric derivatives muaj zoo heev solubility nyob rau hauv cov txuj lom roj thiab zaub roj, thiab cov surfactants no tsis irritating lub qhov muag, ua rau lawv tsim nyog rau npaj tsis irritating tshuaj pleev ib ce xws li tshuaj zawv plaub hau.
Post lub sij hawm: Nov-18-2024