Synthesis and testing of cellulose acetate nicotinate as adsorbent for rhodamine B dye. Issue 29 (21st March 2019)

• Record Type: Journal Article
• Authors: Olaru, Niculae; Anghel, Narcis; Pascariu, Petronela; Ailiesei, Gabriela
• Is Part Of: Journal of applied polymer science. Volume 136:Issue 29(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-03-21
• Subjects: adsorption capacity tests -- adsorption kinetics -- cellulose acetate nicotinate synthesis -- electrospun nanofibers -- morphology; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.47772
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: The esterification of cellulose hydroxyl groups with natural carboxylic acids in mild conditions represents an adequate pathway in obtaining cellulose derivatives with different useful properties. In this article, authors report the synthesis of new mixed ester of cellulose and cellulose acetate nicotinate (CAN), in a homogenous medium using DMF as solvent, cellulose acetate (CA) as starting cellulosic material, and nicotinic acid as an esterification agent in the presence of p‐toluenesulfonyl chloride and pyridine. FTIR and NMR techniques were used to prove the binding of nicotinoyl group at free hydroxyl groups of CA. The obtained CAN was electrospun by electrospinning technique to obtain adsorbent ultrafine fibers, evidenced by SEM images, with high specific surface area. Monolayer Langmuir and empirical Leundrich isotherms were used to assess the adsorption capacity for rhodamine B dye of electrospun CAN in comparison with that of electrospun CA used as starting material. Langmuir isotherm led to a better assessment of experimental data suggesting that the adsorption is mainly determined by hydrogen bonds formed between carboxylic OH hydrogen bonding donor and pyridine N hydrogen bonding acceptor. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2019, 136, 47772. Abstract : Novel cellulose acetate nicotinate (CAN) was prepared by esterification synthesis. Ultrafine fibers adsorbent was obtained from CAN using electrospinning technique. Remarkable adsorption efficiency was observed for rhodamine B (RhB) in aqueous solution. Monolayer Langmuir and empirical Leundrich isotherms were used to assess the adsorption capacity for RhB dye of electrospun CAN in comparison with that of electrospun cellulose acetate used as starting material.