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A water-soluble quaternary ammonium salt of chitosan, chitosan-N-hydroxy-2,3-propyl-N-methyl-N,N-diallylammonium methyl sulfate (MDAACS), was synthesized by reacting chitosan with methyl diallyl ammonium salt (MDAA). The results of water contact angle and swelling ratio showed that the membrane of MDAACS was more hydrophilic than chitosan. The antibacterial activities of MDAACS against Staphylococcus...
Chitosan derivatives with quaternary ammonium salt, such as N,N,N-trimethyl chitosan, N–N-propyl-N,N-dimethyl chitosan and N-furfuryl-N,N-dimethyl chitosan were prepared using different 96% deacetylated chitosan of M v 2.14×10 5 , 1.9×10 4 , 7.8×10 3 . Amino groups on chitosan react with aldehydes to from a Schiff base intermediate. Quaternized chitosan were obtained...
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