Peb cov khoom tseem ceeb: block Silicone, hydroxilic silicone, tag nrho cov pa roj caricone, carbon rau: Maily +8619 (WhatsApp)
Taw qhia rau sursfactants
Surfactants muaj cov qauv amphiphilic molecular: ib qho kawg muaj cov pab pawg hydrophilic, thaum lwm tus muaj hydrophobic pab pawg, hu ua Hydrophobic Tail. Lub taub hau hydrophilic tso cai surfactants kom yaj nyob rau hauv lawv monomer daim ntawv.
Cov pab pawg hydrophilic yog feem ntau cov pab pawg polar, uas tuaj yeem yog pawg carboxyl (-Se3h), cov pab pawg amino), cov pab pawg hydrox,) xws li pawg ntawm polar hydrophilic pawg.
Cov pab pawg hydrophobic yog feem ntau yog-polar hydrocarbon saw, xws li hydrophobic alkyls alkylcic alkylcic alkylcic alkyl) lossis cov pab pawg alkyl) lossis cov aryl).
Surfactants tuaj yeem raug faib rau hauv Ionic surfactants (suav nrog Cationic Surfactants), tsis yog-ionic surfactants, maked surfactants, thiab lwm tus. Hauv kev daws teeb meem surfactant, thaum lub concentration ntawm surfactant nce mus txog ib qho nqi, surfactant molecules yuav ua ntau yam xaj tau ua rau npe hu ua Micelles. Cov txheej txheem ntawm mikellization, los yog miceli kev tsim cov cuab yeej ntawm cov kev daws teeb meem surfactant, ntau npaum li ntau qhov kev cuam tshuam tseem ceeb interfacial muaj feem xyuam nrog kev tsim ntawm Micelles.
Cov concentration ntawm cov uas surfactants daim ntawv micelles hauv kev daws teeb meem yog hu ua qhov tseem ceeb motelle concentration (CMC). Micelles tsis yog tsau, kheej kheej; Theej, lawv nthuav tawm cov kev hloov pauv tsis xwm yeem thiab kev hloov pauv hloov pauv hloov pauv. Nyob rau hauv qee qhov kev mob, surfactants kuj tseem yuav pom tau rov qab Micelle cov xeev.
Yam cuam tshuam CMC:
- Cov qauv ntawm lub surfactant
- Ntaus thiab muaj cov tshuaj ntxiv
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Kev sib cuam tshuam ntawm surfactants thiab cov protein
Proteins muaj cov tsis-ncov qaum, ncov qaumteb qab teb, thiab them ntau pab amphiphilic molecules tuaj yeem cuam tshuam nrog cov protein hauv ntau txoj kev. Nyob ntawm cov xwm txheej, surfactants tuaj yeem tsim cov molecular kev teeb tsa molecular muaj cov qauv sib xyaw, xws li micelles sib txawv nrog cov protein.
Cov kev sib cuam tshuam ntawm cov protein thiab surfactants (protein-surfactant, ps) feem ntau muaj kev sib cuam tshuam electrostical thiab hydrophobic sib txuas lus. Ionic surfactants cuam tshuam nrog cov protein feem ntau los ntawm cov roj hluav taws xob ntawm cov pawg poliphatic cov protein thiab cov protein ntau ntawm cov protein, yog li ua cov protein, yog li tsim PS complexes.
Tsis yog-ionic surfactants feem ntau cuam tshuam nrog cov protein los ntawm hydrophobic rog, qhov chaw uas cov cheeb tsam hydrothobic ntawm cov protein ntawm cov protein. Qhov kev sib cuam tshuam tuaj yeem cuam tshuam rau ob tus qauv thiab kev ua haujlwm ntawm surfactant thiab cov protein. Yog li ntawd, hom thiab concentration ntawm surfactants, nrog rau cov protectional, txiav txim siab seb cov protein ntau lossis cov khoom siv uas tsis hais tawm lossis ua rau muaj kev sib cav sib ceg lossis kev sib cais.
HLB tus nqi ntawm surfactants
Rau cov surfactant los nthuav tawm nws cov kev ua tshwj xeeb interfacial, nws yuav tsum sib npaug ntawm hydrophobic thiab hydrophilic Cheebtsam. Lub HLB (Hydrophile tshuav nyiaj li cas) yog kev ntsuas ntawm hydrothilic-lipophilic tshuav nyiaj li cas thiab ua haujlwm ua qhov ntsuas ntawm surfactants thiab hydrophobic zog.
Tus nqi HLB yog tus txheeb ze tus nqi (xws li 0 txog 40). Piv txwv li, paraffin muaj tus nqi HLB ntawm 0 (tsis muaj Hydrophilic Sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl sulecyl Ib tus nqi HLB siab dua qhia tau zoo dua hydrophilicity, thaum tus nqi qis dua HLB tus nqi qhia tias tsis muaj txiaj ntsig Hydrophilicity.
Lub Sijhawm Post: Sep-10-2024