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Title of article :
Chemical modification of chitosan. Part 9: Reaction of N-carboxyethylchitosan methyl ester with diamines of acetal ending PAMAM dendrimers
Author/Authors :
Sashiwa، نويسنده , , H and Shigemasa، نويسنده , , Y and Roy، نويسنده , , R، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
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Abstract :
N-carboxyethylchitosan methyl ester (degree of substitution (DS)=1.2 per repeating residue of chitosan), which was prepared from chitosan and methyl acrylate by the Michael reaction, was reacted with diamine and gave a water-soluble product. The DS value of the diamine moiety was 0.64–0.94. Acetal ending poly(amidoamine) (PAMAM) dendrimers were successfully attached to the ester and gave an N-carboxyethylchitosan–dendrimer hybrid without any crosslinking. The DS values of the hybrids were gradually decreased from 0.61 to 0.04 with the increasing generation of dendrimer.
Keywords :
N-carboxyethylchitosan methyl ester , dendrimer , Chitosan
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