Preparation of hydrazinodeoxycellulose and carboxyalkyl hydrazinodeoxycelluloses and their adsorption behavior toward heavy metal ions

Designing syntheses of cellulose and starch derivatives with basic or cationic N‐functions: part I—cellulose derivatives

“…This figure is available in colour online at wileyonlinelibrary.com/journal/pat (HDC). [56,57] The CDC was reacted with hydrazine hydrate in an aqueous solution. [56] However, HDCs with higher DS can be obtained by using neat hydrazine hydrate as a reaction medium.…”

“…[56] However, HDCs with higher DS can be obtained by using neat hydrazine hydrate as a reaction medium. [57] α-Carboxyalkyl and β-carboxyalkyl HDCs were also prepared by reacting CDC with an excess amount of α-hydrazinopropionic and β-hydrazinopropionic acids (HPAs) in DMF and DMSO (Scheme 8). [57] Under mild conditions, the product with DS of 0.62 was obtained for α-HPA, and a DS of 0.54 was attained for β-HPA.…”

“…[57] α-Carboxyalkyl and β-carboxyalkyl HDCs were also prepared by reacting CDC with an excess amount of α-hydrazinopropionic and β-hydrazinopropionic acids (HPAs) in DMF and DMSO (Scheme 8). [57] Under mild conditions, the product with DS of 0.62 was obtained for α-HPA, and a DS of 0.54 was attained for β-HPA. The obtained materials [56,57] were served as complexing agents for transition metals.…”

“…Reaction of CDC with diamines. [57,58] This figure is available in colour online at wileyonlinelibrary.com/journal/pat Scheme 9. Introduction of aliphatic or aromatic diamine or oligoamine units in cellulose, starting from the corresponding tosylcellulose derivatives.…”

“…In another approach, chlorodeoxycellulose (CDC) was employed as a precursor for the synthesis of hydrazinodeoxycellulose (HDC) . The CDC was reacted with hydrazine hydrate in an aqueous solution .…”