Synthesis and Characterization of Carboxymethyl Cellulose from Tunisian Vine Stem: Study of Water Absorption and Retention Capacities

Abstract

The aim of this work was to study the effect of the degree of substitution (DS) and the purity of sodium carboxymethyl cellulose (CMCNa) prepared from Tunisian vine stem on the absorption and retention of water. Vine stem was first delignified using souda-anthraquione, then bleached and finally chemically modified, in order to synthesize different CMCNa derivatives. The carboxymethylation reaction was carried out in presence of NaOH (40 %) and monochloroacetic acid (ClCH 2 COOH), in n-butanol as a reaction solvent. The obtained CMCNa derivatives were characterized using different tools such as the DS, Fourier transforms IR techniques, CP-MAS 13 C-NMR, the exchange capacity as well as the determination of modification reaction yield. The performance of the prepared derivatives in term of absorption capacities and retention capacities was established. The performance of CMCNa derivatives was compared with that achieved by commercial counterparts and it was concluded that the prepared ones exerted higher efficiency.

Ultrasonic mediated production of carboxymethyl cellulose: Optimization of conditions using response surface methodology

“…Presence of mentioned peaks in impurity FTIR spectrum (Figure 4.c), and absence of these peaks in cellulose FTIR, shows our method is able to extract lignin and hemicellulose, which leads to purer cellulose. Appearance of peaks at 1737 cm -1 (C=O stretch carboxylic acid) and 1228 cm -1 (C-O stretch carboxylic acid) in the prepared CMC spectrum (Figure 4.b) is the indication of successful completion of etherification reaction (Mansouri, Khiari, Bettaieb , El-Gendy, & Mhenni, 2014).…”

Review on Modification of Glucomannan as an Excipient in Solid Dosage Forms

“…Carboxymethylation of polysaccharides increases water absorption and causes faster disintegration. As a comparison, sodium carboxymethyl cellulose (Na CMC) with a DS of 1.0 tends to make CMC easily disaggregated in water, making it more hydrophilic compared to water-insoluble cellulose [102,103]. A similar property was also observed in carboxymethylation of xanthan, where an increase in the degree of substitution exhibits greater hydrophilicity and lower molecular weight [104].…”

Preparations and Characterizations of Carboxymetylated Hydrophilic Macromolecular Composites Directly Derived from Weeds

“…Although direct CM reactions for plants of the Gramineae into CM derivatives have been investigated for agricultural plants of the Gramineae materials [4,[8][9][10], dynamic mechanical properties were not investigated sufficiently. As shown in Table3, viscosities of 1% aqueous solution of CM derivatives prepared from wild grasses showed lower than a commercial CMC-Na and CM-α-cellulose of TF due to both lignin and lignocellulosic matrix.…”