Sodium oleate yog sodium ntsev ntawm oleic acid. Cia peb nthuav tawm lub ntsiab lub cev thiab tshuaj lom neeg ntawm cov tshuaj no, nws thaj chaw ntawm daim ntawv thov.
Lub cev muaj zog
Sodium oleate muaj qhov kub ntawm 220 degrees Celsius. Raws li ib txwm muaj, nws yog cov hmoov dawb los yog daj me ntsis, uas yog soluble hauv dej, nrog rau kub ethyl cawv. Sodium oleate yog insoluble hauv ether thiab acetone (ketone). Cov tshuaj no muaj nyob rau hauv cov tshuaj ntxuav tes niaj hnub thiab xab npum.
Sodium oleate muaj cov nyhuv hydrophobic. Nws tuaj yeem piav qhia los ntawm kev tsim cov calcium soaps nrog alkaline Cheebtsam ntawm cov khoom.
Kev xaiv
Sodium oleate tau txais li cas? Lub inorganic compound uas yog lub hauv paus rau nws tsim yog sodium hydroxide. Ntsev yog tsim los ntawm kev sib txuam tshuaj ntawm alkali nrog oleic (organic) acid. Cov tshuaj tiv thaiv no yog thim rov qab; yog li ntawd, cov concentrated sulfuric acid yog siv los hloov qhov sib npaug ntawm kev tsim cov khoom siv tshuaj tiv thaiv. Nws nyiam cov dej molecules vim nws yog hygroscopic.
Txoj Kevkhoom
Dab tsi yog sodium oleate? Cov khoom ntawm no compound tau muab faib ua peb pawg:
- Kev sib tw. Lawv nyob ntawm tus naj npawb ntawm molecules. Cov no suav nrog siab, txo qis lossis nce hauv qhov kub thiab txias, ntim.
- Ntxiv. Lawv yog vim lub zog molecular, qhia raws li qhov sib npaug ntawm cov khoom ntawm cov pab pawg ntawm cov atoms uas tsim cov molecules.
- Kev tsim kho. Cov khoom no suav nrog cov xim ntawm cov tebchaw, lub sijhawm dipole.
Sodium oleate yog ib qho colloidal surfactant. Nws muaj kaum yim carbon atoms, uas tsim ib tug ruaj khov dispersed system ntawm heterogeneous hom. Cov tshuaj lom neeg no, raws li kev faib tawm cuam tshuam nrog cov qauv tshuaj, yog anionic surfactant. Cov tshuaj no muaj cov nyhuv ntxuav, belongs rau pawg plaub raws li kev faib tawm ntawm P. A. Rebinder. Cov nyhuv ntxuav yog txuam nrog kev sib cuag ntawm aqueous tov ntawm ib qho ntsev thiab qhov chaw ntawm cov khib nyiab. Solubilization, tus yam ntxwv ntawm sodium oleate, yog lub ntsiab tivthaiv nyob rau hauv lub complex ntawm nws ntxuav tes.
Micelle tsim yog txheej txheem spontaneous. Rau nws, qhov loj ntawm kev hloov pauv hauv Gibbs lub zog muaj qhov ntsuas tsis zoo.
Daim ntawv thov
Sodium oleate siv qhov twg? Kev siv cov tshuaj no ua ib qho emulsifier yog raws li nws cov solubility zoo hauv dej. Nws tuaj yeem siv tau kom tau txais cov roj-dej emulsions ruaj khov. Tom qab kev qhia txog calcium cations rau hauv cov kev daws teeb meem, nag lossis daus ntawm insoluble oleate tau pom,hloov daim duab mus rau tus txheej txheem rov qab.
Vim muaj cov khoom seem hauv cov ntsev molecule, adsorption tshwm sim ntawm qhov chaw ntawm benzene. Tom qab qhia cov xim rau hauv emulsion, piv txwv li, Sudan III, soluble hauv aromatic benzene, qhov nruab nrab dispersion thiab theem tuaj yeem txheeb xyuas.
Thaum kho nrog sodium oleate, lub wettability ntawm quartz thiab nws cov peev xwm electrokinetic tau txo qis. Cia peb txheeb xyuas cov dej-sodium oleate system. Tus nqi ntawm qhov nro ntawm cov ntsev ua rau muaj kev hloov pauv hauv cheeb tsam ntawm kev tsis muaj zog nyob rau hauv cov kev taw qhia ntawm ntau dua concentration. Qhov no emulsifier nyob rau hauv siab concentration muaj ib tug ncaj qha cuam tshuam rau ua npuas ncauj stability.
Nyob rau hauv txheej txheej, qhov concentration ntawm cov tshuaj no tshaj qhov ntsuas no hauv nws ntim los ntawm kaum tawm txhiab zaus. Kev kho cov hlau nplaum ntawm cov tshuaj aqueous ntawm cov ntsev muab cuam tshuam rau nws cov khoom sorption.
Kev sib cuag nrog sodium oleate ntawm ntau yam minerals uas nyob rau hauv ib tug sib nqus ncua kev kawm ntawv ua rau ib tug txo nyob rau hauv lub tshav kub ntawm wetting, ib tug txo nyob rau hauv lub optical ceev ntawm cov tshuaj.
Summing up, cia peb hais tias ntawm cov cheeb tsam tseem ceeb ntawm daim ntawv thov ntawm cov organic ntsev, nws yog ib qho tsim nyog yuav tsum nco ntsoov cov lus qhia rau hauv cov tshuaj xab npum. Nws yog cov khoom siv hydrophobic ntawm sodium oleate uas tau ua rau nws nrhiav-tom qab tivthaiv hauv kev lag luam tshuaj pleev ib ce. Colloidal chemistry, nyob rau hauv uas cov compound no xav tau, piav qhia lub cev thiab tshuaj cov yam ntxwv ntawm inorganic thiab organic daws, qhov tshwj xeeb ntawm lawv cov tswv yim thov.
