Optimization of Reaction Conditions for Preparing Carboxymethyl Cellulose from Corn Cobic Agricultural Waste
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Singh,A.K
Singh, Raj Kumar |
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| Date |
2016-11-24T10:16:01Z
2016-11-24T10:16:01Z 2016-11-24T10:16:01Z |
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| Identifier |
http://hdl.handle.net/123456789/756
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| Description |
Carboxymethyl cellulose (CMC) is an impor- tant industrial polymer with a wide range of applications in flocculation, drag reduction, detergents, textiles, paper, foods, drugs, and oil well drilling operation. The various properties of CMC depend upon three factors: molecular weight of the polymer, average number of carboxyl content per anhydroglucose unit (AGU) i.e. degree of substitution and also on the distribution of carboxyl substituent’s along the polymer chains. The cellulose extracted from corn cobic lignocellulosic waste biomass was converted to CMC by etherification process using sodium hydroxide and monochloroacetic acid (MCA) under heterogeneous con- dition. The carboxymethylation reaction was optimized against the NaOH concentration, monochloroacetic acid concentration, reaction temperature and time. The degree of substitution (DS) was analyzed with respect to the reaction conditions using chemical method. The produced CMC was characterized by using Fourier transform infra- red spectra and X-ray diffractogram. The optimized con- ditions to yield CMC with high DS of 1.18 are; concentration of aqueous NaOH 3.25 mol/AGU, 25 % (w/v); concentration of MCA, 2.4 mol/AGU; reaction time, 3.0 h and temperature, 60 C with isopropyl alcohol as the supporting solvent medium.
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| Language |
en
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| Relation |
May 2012
PP 9 |
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| Subject |
Degree of substitution
Carboxymethylation Etherification Cellulose Corn cob |
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| Title |
Optimization of Reaction Conditions for Preparing Carboxymethyl Cellulose from Corn Cobic Agricultural Waste
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| Type |
Article
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