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Title: Synthesis and characterization of carboxymethyl cellulose from office waste paper: A greener approach towards waste management

Highlights: • Carboxymethyl cellulose (CMC) was successfully prepared from waste paper. • CMC had maximum degree of substitution (DS) 1.07. • Rheological studies of CMC (DS, 1.07) showed non-Newtonian pseudoplastic behavior. • Characterization of CMC was done by FT-IR and NMR techniques. • Morphology of prepared CMC was studied by SEM. - Abstract: In the present study, functionalization of mixed office waste (MOW) paper has been carried out to synthesize carboxymethyl cellulose, a most widely used product for various applications. MOW was pulped and deinked prior to carboxymethylation. The deinked pulp yield was 80.62 ± 2.0% with 72.30 ± 1.50% deinkability factor. The deinked pulp was converted to CMC by alkalization followed by etherification using NaOH and ClCH{sub 2}COONa respectively, in an alcoholic medium. Maximum degree of substitution (DS) (1.07) of prepared CMC was achieved at 50 °C with 0.094 M and 0.108 M concentrations of NaOH and ClCH{sub 2}COONa respectively for 3 h reaction time. The rheological characteristics of 1–3% aqueous solution of optimized CMC product showed the non-Newtonian pseudoplastic behavior. Fourier transform infra red (FTIR), nuclear magnetic resonance (NMR) and scanning electron microscope (SEM) study were used to characterize the CMC product.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ; ;  [1]
  1. Cellulose and Paper Division, Forest Research Institute, Dehradun 248006 (India)
  2. Chemistry of Forest Products Division, Institute of Wood Science & Technology, Bangalore 560003 (India)
  3. Chemistry Division, Forest Research Institute, Dehradun 248006 (India)
Publication Date:
OSTI Identifier:
22470218
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; Journal Volume: 38; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ABUNDANCE; AQUEOUS SOLUTIONS; CELLULOSE; FOURIER TRANSFORM SPECTROMETERS; INFRARED SPECTRA; NUCLEAR MAGNETIC RESONANCE; SCANNING ELECTRON MICROSCOPY; SODIUM HYDROXIDES; SYNTHESIS; WASTE MANAGEMENT; WASTES