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Quaternary Ammonium Ntsev rau Tshuaj Tiv Thaiv Kab Mob

Quaternary ammonium ntsev (QAS) yog cov cationic sib txuas uas muaj cov pawg alkyl hauv cov saw ntev ntawm C8 – C18, uas yog dej soluble thiab tuaj yeem siv ua tshuaj tua kab rau hauv kev lag luam textile.

QAS yog cov ionic tebchaw muaj quaternary ammonium nitrogen, plaub alkyl lossis aryl pawg txuas nrog cov pa nitrogen no, thiab anionic ion xws li chloride lossis bromide. Ntawm plaub pawg alkyl, ib qho yog ntev alkyl saw pab pawg uas muaj ntau dua yim hydrocarbons thiab tseem ua cov pab pawg hydrophobic. Hydrophobic pawg ntawm QAS zoo li cuam tshuam rau lawv cov haujlwm antimicrobial (Tiller et al., 2001; Zhao thiab Sun, 2007). Nrog lub cev muaj zog hydrophobicity, muaj zog dua cov tshuaj tua kab mob muaj zog uas QAS muaj (Zhao thiab Sun, 2008) (Daim duab 16.1 thiab Rooj 16.1). Ntau QAS cov khoom siv muaj cov kev ua haujlwm zoo. QAS yog cov tshuaj biocides zoo thaum siv rau hauv cov tshuaj tov aqueous thiab ua kua tshuaj tua kab mob. Thaum QAS cov tshuaj sib txuas nrog cov tshuaj fiber ntau lawv cov haujlwm tuaj yeem cuam tshuam nyob ntawm seb lawv txuas nrog li cas thiab cov qauv kawg ntawm QAS rau ntawm cov chaw. Lub cev sib xyaw QAS hauv cov tshuaj fiber ntau tuaj yeem muab cov tshuaj tua kabmob ua ntu zus los ntawm kev maj mam tso tawm ntawm cov fibre cov chaw thaum siv, uas tuaj yeem muab cov haujlwm ua haujlwm ntawm cov ntaub ntawv.

 

Kev nqus siab yuav ua rau 6-teev qhov txo cov kab mob hauv lub sijhawm sib tiv tauj

QAS

1 feeb (E. coli) (ppm) Tsaus ntuj

5 feeb (E. coli) (ppm) Tsaus ntuj

1 feeb (Saureus) (ppm) Tsaus ntuj

5 feeb (S. aureus) (ppm) Tsaus ntuj

ALPC

100

100

100

50

AALPC

100

100

100

50

BADPB

50

50

50

10

NADPB

50

10

50

10

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Sijhawm Tshaj Tawm: Plaub Hlis-16-2021