Qhov sib txawv tseem ceeb ntawm dispersant thiab surfactant yog tias cov dispersant txhim kho kev sib cais ntawm cov khoom hauv qhov raug ncua thaum lub surfactant yog ib yam khoom uas tuaj yeem txo qhov nro ntawm ob theem ntawm cov teeb meem.
A dispersant yog ib daim ntawv ntawm surfactant. Tab sis tag nrho cov surfactants tsis yog dispersants. Lub surfactant tuaj yeem ua raws li cov tshuaj ntxuav tes, tus neeg sawv cev ntub dej, emulsifier, tus neeg ua npuas ncauj sib nrug los ntawm kev ua raws li cov khoom tawg. Feem ntau, ob qho no yog cov organic tebchaw.
Dispersant yog dab tsi?
A dispersant yog kua lossis roj siv los faib cov khoom me me hauv nruab nrab. Peb hu nws "plasticizers" thiab. Muaj ob hom ntawm lawv; non-nto active polymers thiab nto active tshuaj. Peb ntxiv cov tshuaj no rau hauv kev ncua kom tsis txhob tsim cov pawg ntawm cov khoom. Qhov no txhim kho qhov kev sib cais ntawm cov khoom kom tsis txhob muaj kev sib koom ua ke. Ntxiv mus, qhov txheej txheem no tiv thaiv cov khoom los ntawm kev daws teeb meem. Feem ntau ntawm cov sij hawm, ib tug dispersant yog muaj ib los yog ntau tshaj surfactant tshuaj.
Daim duab 01: Lub Mechanism of Action of Dispersant
Cov kev siv ntawm cov tshuaj no suav nrog kev tsim cov roj cav tsheb, tiv thaiv kev tsim cov biofilms hauv ntau qhov kev lag luam, hauv kev sib xyaw ua vaj tse kom tsis txhob siv dej ntau, hauv cov roj drilling kom tawg cov khib nyiab rau hauv. particles.
Dab tsi yog Surfactant?
A surfactant yog ib yam khoom uas tuaj yeem txo qhov nro ntawm ob theem ntawm cov teeb meem. Nws tuaj yeem txo qhov nro ntawm ob lub kua, nruab nrab ntawm cov roj thiab cov kua lossis nruab nrab ntawm cov kua thiab cov khoom. Feem ntau, cov no yog amphiphilic organic tebchaw. Qhov no txhais tau tias cov tshuaj no muaj ob qho tib si hydrophilic thiab hydrophobic cheeb tsam nyob rau hauv tib lub molecule. Yog li ntawd, lawv muaj ob qho tib si dej soluble thiab dej insoluble cheeb tsam.
Daim duab 02: Hydrophilic thiab Hydrophobic Thaj Chaw ntawm Surfactant Molecules
Cov ntawv thov ntawm surfactants suav nrog nws lub luag haujlwm ua tus neeg saib xyuas, tus neeg sawv cev ntub dej, dispersant, emulsifier, foaming thiab anti-foaming ua nyob rau hauv ntau yam khoom xws li detergents, emulsions, xim, soaps, inks, anti-fogs, adhesives., tshuaj tua kab, thiab lwm yam.
Qhov txawv ntawm Dispersant thiab Surfactant yog dab tsi?
A dispersant yog kua lossis roj siv los faib cov khoom me me hauv nruab nrab. Ib qho surfactant yog ib yam khoom uas tuaj yeem txo qhov nro ntawm ob theem ntawm cov teeb meem. Txawm li cas los xij, ib qho dispersant yog ib hom ntawm surfactant. Ob yam khoom no txawv ntawm ib leeg raws li lawv txoj haujlwm. Qhov no txhais tau hais tias tus dispersant tiv thaiv kev tsim ntawm pawg ntawm cov khoom hauv qhov raug ncua thaum lub surfactant txo qis qhov nro ntawm ob lub kua, nruab nrab ntawm cov roj thiab cov kua lossis nruab nrab ntawm cov kua thiab cov khoom. Qhov no yog qhov sib txawv tseem ceeb ntawm dispersant thiab surfactant. Ntxiv mus, ib tug dispersant ua nws txoj hauj lwm ntawm adsorbing orienting cov hais nyob rau hauv cov kua-air interface whereas ib tug surfactant ua nws txoj hauj lwm ntawm adsorbing rau cov khoom-kua interface; yog li paub tseeb tias qhov repulsion ntawm cov khoom.
Cov hauv qab no nthuav tawm cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm cov dispersant thiab surfactant hauv daim ntawv teev npe.
Summary – Dispersant vs Surfactant
A dispersant yog ib daim ntawv ntawm surfactant. Qhov txawv ntawm dispersant thiab surfactant yog tias ib qho dispersant txhim kho kev sib cais ntawm cov khoom hauv qhov raug ncua thaum lub surfactant yog ib yam khoom uas tuaj yeem txo qhov nro ntawm ob theem teeb meem.
