Synthesis and characterization of dicarboxymethyl cellulose

被引：9

作者：

Chagas, Ricardo ^{[1
]}

Gericke, Martin ^{[2
]}

Ferreira, Ricardo B. ^{[3
]}

Heinze, Thomas ^{[2
]}

Ferreira, Luisa M. ^{[4
]}

机构：

[1] Univ Nova Lisboa, NOVA Sch Sci & Technol, Dept Mat Sci, i3N CENIMAT, Campus Caparica, P-2829516 Caparica, Portugal

[2] Friedrich Schiller Univ Jena, Ctr Excellence Polysaccharide Res, Inst Organ Chem & Macromol Chem, Humboldtstr 10, D-07743 Jena, Germany

[3] Univ Lisbon, Inst Super Agron, LEAF, P-1349017 Lisbon, Portugal

[4] Univ Nova Lisboa, NOVA Sch Sci & Technol, LAQV REQUIMTE, Campus Caparica, P-2829516 Caparica, Portugal

来源：

CELLULOSE | 2020年 / 27卷 / 04期

关键词：

Dicarboxymethyl cellulose; Cellulose ether; Heterogeneous derivatization; Cellulose functionalization; CARBOXYMETHYL CELLULOSE;

D O I：

10.1007/s10570-019-02952-6

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Synthesis of dicarboxymethyl cellulose (DCMC) under heterogeneous conditions was examined. Cellulose was etherified using sodium bromomalonate in isopropanol/water in the presence of NaOH. The reaction was performed with five different NaOH concentrations (5-30 w/v %) and the products were characterized by anion-exchange high-performance liquid chromatography (AE-HPLC), inductively coupled plasma atomic emission- (ICP-AES), Fourier transform infrared- (FTIR), and nuclear magnetic resonance (1D-/2D-NMR) spectroscopy. Adjusting the amount of NaOH resulted in increasing functionalization of the cellulose achieving an average degree of substitution (DS) between 0.05 and 0.51. Both ICP-AES and AE-HPLC gave comparable DS values. NMR spectroscopic analysis showed that etherification occurred preferably at O-6 and, to a certain extent, at the secondary positions depending on the reaction conditions. Graphic abstract

引用

页码：1965 / 1974

页数：10

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