Qhov sib txawv tseem ceeb ntawm ionic thiab nonionic surfactants yog tias cov ionic surfactants muaj cov ntsiab lus cations los yog anions tam sim no nyob rau hauv nws formulation whereas cov nonionic surfactants tsis muaj cations los yog anions tam sim no nyob rau hauv nws formulation.
Surfactants yog cov neeg ua haujlwm ntog. Qhov ntawd txhais tau tias, cov tshuaj no tuaj yeem txo qhov nro ntawm ob yam khoom; ob kua, roj thiab kua los yog kua thiab khoom. Muaj ob lub ntsiab ntawm surfactants li ionic thiab nonionic. Ob qho no txawv ntawm ib leeg raws li muaj lossis tsis muaj cations thiab anions hauv lawv cov qauv.
Ionic Surfactants yog dab tsi?
Ionic surfactants yog cov neeg ua haujlwm saum npoo av uas muaj cations lossis anions xws li hauv lawv cov qauv. Nyob ntawd, lub taub hau ntawm surfactant molecule nqa ib qho hluav taws xob net. Nws tuaj yeem yog tus nqi zoo lossis tus nqi tsis zoo. Yog hais tias tus nqi yog qhov zoo, peb muab nws lub npe hu ua cationic surfactant thaum tus nqi tsis zoo; Peb lub npe hu ua anionic surfactant. Qee zaum, cov tebchaw no muaj lub taub hau nrog ob pawg sib txawv ntawm ionic; ces peb hu nws zwitterionic surfactant.
Thaum xav txog anionic surfactants, lawv 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 feem ntau surfactants uas peb siv; Piv txwv li: xab npum muaj alkyl carboxylates.
Thaum xav txog cov cationic surfactants, lawv 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. Qhov no yog vim 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 cov neeg ua haujlwm saum npoo av uas tsis muaj nqi hluav taws xob hauv lawv cov qauv. Qhov no txhais tau hais tias cov molecule tsis dhau ionization thaum peb yaj nws hauv dej. Ntxiv mus, lawv muaj covalently bonded oxygen-muaj hydrophilic pawg. Cov pawg hydrophilic no khi nrog cov qauv niam txiv hydrophobic. Cov pa oxygen atoms tuaj yeem ua rau hydrogen bonding ntawm surfactant molecules. Txij li thaum hydrogen bonding raug cuam tshuam los ntawm qhov kub thiab txias, qhov kub nce txo qhov kev sib cais ntawm cov surfactants.
Daim duab 01: Daim duab qhia txog cov nonionic, anionic, cation thiab zwitterionic surfactant molecules.
Muaj ob hom loj ntawm nonionic surfactants raws li qhov sib txawv ntawm lawv cov hydrophilic pawg raws li hauv qab no:
- YPolyoxyethylene
- Polyhydric Alcohols
Qhov txawv ntawm Ionic thiab Nonionic Surfactants yog dab tsi?
Ionic surfactants yog cov neeg ua haujlwm saum npoo av uas muaj cations lossis anions xws li hauv lawv cov formulations whereas nonionic surfactants yog cov nto active agents uas tsis muaj net hluav taws xob nqi nyob rau hauv lawv formulations. Yog li ntawd, qhov sib txawv tseem ceeb ntawm ionic thiab nonionic surfactants yog nyob rau hauv lawv cov formulation. Tsis tas li ntawd, ob lub tebchaw no txawv ntawm ib leeg raws li qhov muaj lossis tsis muaj hluav taws xob rau ntawm lub taub hau ntawm surfactant molecule.
Cov lus qhia hauv qab no nthuav tawm qhov sib txawv ntawm ionic thiab nonionic surfactants nyob rau hauv daim ntawv tabular.
Summary – Ionic vs Nonionic Surfactants
Surfactants yog cov khoom ua haujlwm saum npoo av uas muaj txiaj ntsig los txo qhov nro ntawm ob theem ntawm cov teeb meem. Muaj ob hom ionic thiab nonionic surfactants. Qhov txawv ntawm ionic thiab nonionic surfactants yog tias cov ionic surfactants muaj cov ntsiab lus cations los yog anions tam sim no nyob rau hauv nws formulation whereas cov nonionic surfactants tsis muaj cations los yog anions tam sim no nyob rau hauv nws formulation.
