Qhov sib txawv tseem ceeb ntawm anionic cationic thiab nonionic surfactants yog cov anionic surfactants muaj cov pab pawg ua haujlwm tsis zoo, thiab cationic surfactants muaj cov pab pawg ua haujlwm zoo, qhov nonionic surfactants tsis muaj hluav taws xob them nyiaj.
Lub sij hawm surfactant yog hais txog cov neeg ua haujlwm saum npoo av. Qhov ntawd txhais tau tias, cov surfactants tuaj yeem txo qhov nro ntawm ob yam khoom. Piv txwv li, ob yam khoom muaj peev xwm ua tau ob lub kua, roj thiab kua los yog kua thiab khoom. Muaj peb yam tseem ceeb ntawm surfactants li anionic, cationic thiab nonionic surfactants. Peb hom no sib txawv ntawm ib leeg raws li tus nqi hluav taws xob ntawm lub compound.
Anionic Surfactants yog dab tsi?
Anionic surfactants yog ib hom ntawm cov neeg ua haujlwm saum npoo av uas muaj cov pab pawg ua haujlwm tsis zoo hauv lub taub hau ntawm cov molecule. Cov pab pawg ua haujlwm zoo li no suav nrog sulfonate, phosphate, sulfate thiab carboxylates. Cov no yog cov surfactants feem ntau peb siv. Piv txwv li, xab npum muaj alkyl carboxylates.
Daim duab 01: Kev Ua Haujlwm ntawm Surfactants
Cationic Surfactants yog dab tsi?
Cationic surfactants yog ib hom ntawm cov neeg ua haujlwm saum npoo av uas muaj cov pab pawg ua haujlwm zoo hauv lub taub hau ntawm cov molecule. Feem ntau ntawm cov surfactants no muaj txiaj ntsig zoo li tshuaj tua kab mob, tshuaj tua kab mob, thiab lwm yam. Nws yog vim tias lawv tuaj yeem cuam tshuam cov cell membranes ntawm cov kab mob thiab cov kab mob. Cov pab pawg ua haujlwm tshaj plaws uas peb tuaj yeem pom hauv cov molecules yog ammonium ion.
Nonionic Surfactants yog dab tsi?
Nonionic surfactants yog ib hom ntawm cov neeg ua haujlwm saum npoo av uas tsis muaj cov nqi hluav taws xob hauv lawv cov qauv. Qhov ntawd txhais tau tias, cov molecule tsis muaj ionization thaum peb yaj nws hauv dej. Tsis tas li ntawd, lawv muaj covalently bonded oxygen-muaj hydrophilic pawg. Cov pawg hydrophilic no khi nrog cov qauv niam txiv hydrophobic thaum cov surfactant ntxiv rau cov qauv. Cov pa oxygen atoms hauv cov tebchaw no tuaj yeem ua rau hydrogen bonding ntawm surfactant molecules.
Daim duab 02: Kev Ua Haujlwm ntawm Surfactant
Vim tias kev sib txuas ntawm hydrogen cuam tshuam los ntawm qhov kub thiab txias, qhov kub nce ntxiv txo qhov kev sib cais ntawm cov surfactants. Tsis tas li ntawd, muaj ob hom loj ntawm nonionic surfactants raws li qhov sib txawv hauv lawv pawg hydrophilic raws li hauv qab no:
- YPolyoxyethylene
- Polyhydric Alcohols
Qhov txawv ntawm Anionic Cationic thiab Noionic Surfactants yog dab tsi?
Muaj peb yam tseem ceeb ntawm surfactants li anionic, cationic thiab nonionic surfactants. Qhov sib txawv tseem ceeb ntawm anionic cationic thiab nonionic surfactants yog cov anionic surfactants muaj cov pab pawg ua haujlwm tsis zoo, thiab cov cationic surfactants muaj cov pab pawg ua haujlwm zoo, qhov nonionic surfactants tsis muaj cov nqi hluav taws xob. Piv txwv rau anionic surfactants suav nrog cov tshuaj sib xyaw uas muaj sulfonate, phosphate, sulfate thiab carboxylates. Cov cationic surfactants feem ntau muaj ammonium cation. Muaj ob hom loj ntawm nonionic surfactants li polyoxyethylene thiab polyhydric alcohols.
Cov duab hauv qab no qhia txog qhov sib txawv ntawm anionic cationic thiab nonionic surfactants.
Summary – Anionic Cationic vs Nonionic Surfactants
Lub sij hawm surfactant yog siv los hu ua tus neeg ua haujlwm saum npoo av. Muaj peb yam tseem ceeb ntawm surfactants li anionic, cationic thiab nonionic surfactants. Qhov sib txawv tseem ceeb ntawm anionic cationic thiab nonionic surfactants yog cov anionic surfactants muaj cov pab pawg ua haujlwm tsis zoo, thiab cov cationic surfactants muaj cov pab pawg ua haujlwm zoo, qhov nonionic surfactants tsis muaj cov nqi hluav taws xob.
