Betaine series amphoteric surfactants yog amphoteric surfactants uas muaj cov alkaline N atoms muaj zog. Lawv yog cov ntsev tsis muaj zog tiag tiag nrog ntau yam isoelectric. Lawv qhia txog cov yam ntxwv dipole hauv ntau yam. Muaj ntau yam pov thawj tias betaine surfactants muaj nyob rau hauv daim ntawv ntawm cov ntsev sab hauv. Yog li ntawd, nws qee zaum hu ua quaternary ammonium internal salt surfactant. Raws li cov neeg nqa khoom sib txawv ntawm cov chaw them nqi tsis zoo, cov betaine surfactants uas tau tshaj tawm hauv kev tshawb fawb tam sim no tuaj yeem faib ua carboxyl betaine, sulfonic betaine, phosphoric betaine, thiab lwm yam.

Betaine series amphoteric surfactants yog cov ntsev nruab nrab nrog ntau yam isoelectric. Lawv qhia txog cov yam ntxwv dipole hauv ntau yam pH. Vim muaj quaternary ammonium nitrogen hauv cov molecules, feem ntau betaine surfactants muaj kev ruaj khov tshuaj zoo hauv cov kua qaub thiab alkaline media. Tsuav yog lub molecule tsis muaj cov pab pawg ua haujlwm xws li ether bond thiab ester bond, nws feem ntau muaj kev tiv thaiv oxidation zoo.

Betaine series amphoteric surfactants yooj yim yaj rau hauv dej, hauv cov kua qaub thiab cov hauv paus uas muaj concentrated, thiab txawm tias hauv cov tshuaj inorganic uas muaj concentrated. Lawv tsis yooj yim ua haujlwm nrog cov hlau alkaline thiab lwm cov hlau ions. Cov betaine saw ntev yooj yim yaj rau hauv cov dej nruab nrab thiab tsis cuam tshuam los ntawm pH. Qhov solubility ntawm betaine feem ntau cuam tshuam los ntawm tus lej ntawm cov pa roj carbon atoms. Qhov concentration ntawm lauramide propyl betaine sx-lab30 yaj hauv cov dej nruab nrab tuaj yeem ncav cuag 35%, tab sis qhov solubility ntawm cov homologues nrog cov saw carbon ntev dua yog qis heev.

Qhov tsis kam ntawm cov dej tawv ntawm cov surfactants yog pom tseeb hauv lawv txoj kev kam rau calcium thiab magnesium ions tawv thiab lawv lub zog dispersing rau calcium xab npum. Ntau betaine amphoteric surfactants qhia tau tias muaj kev ruaj khov zoo heev rau calcium thiab magnesium ions. Qhov ruaj khov ntawm calcium ion ntawm feem ntau sulfobetaine amphoteric surfactants yog ruaj khov, thaum qhov ruaj khov ntawm calcium ion ntawm cov tshuaj amine theem nrab yog qis dua.

Betaine series amphoteric surfactants muaj ntau yam ua npuas ncauj. Tom qab sib xyaw nrog anionic surfactants, cov molecules sib cuam tshuam zoo heev. Cov nyhuv ntawm kev ua npuas ncauj thiab kev sib tsoo tau nce ntxiv ntau heev. Ntxiv mus, cov khoom ua npuas ncauj ntawm beet beet surfactants tsis cuam tshuam los ntawm qhov nyuaj ntawm dej thiab PH ntawm qhov nruab nrab. Lawv siv ua cov neeg sawv cev ua npuas ncauj lossis cov neeg ua npuas ncauj, thiab tuaj yeem siv rau hauv ntau yam PH.