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Synthesis of sodium carboxymethyl cellulose using bleached crude cellulose fractionated from cornstalk
descriptionPublicationkeyboard_double_arrow_right Article , Journal 2017Publisher:Elsevier BVFunded by:NSERC
NSERC
Authors: Chunbao (Charles) Xu; Chunbao (Charles) Xu; Shanghuan Feng; Gang Chen; +5 Authors
Chunbao (Charles) Xu; Chunbao (Charles) Xu; Shanghuan Feng; Gang Chen; An Li; Zhongshun Yuan; Takashi Kuboki; Tao Shui; Hengfu Shui;
doi: 10.1016/j.biombioe.2017.06.016
doi: 10.1016/j.biombioe.2017.06.016
Abstract In this study, crude cellulose derived from cornstalk, after bleaching, was used as raw material for the synthesis of sodium carboxymethyl cellulose (CMC) by reacting with the cellulose with NaOH and chloroacetic acid at 75 °C for 1.5 h. Effects of alkali dosage, concentration of chloroacetic acid on the physical and chemical properties of the CMC products were investigated. It was revealed that the reactants alkali reagent/chloroacetic acid/cellulose at the molar ratio of 4.6:2.8:1and 4:2.5:1, or at the molar ratio of NaOH/ClCH 2 COOH ≈1.6–1.64, resulted in CMC products of relatively high water solubility. The viscosity-average molecular weight M v of these two CMC products obtained at molar ratios of 4.0:2.5:1 and 4.6:2.8:1 is in the range of 1.94 × 10 4 –2.48 × 10 4 g mol −1 , and the average DS of the two products are 0.57 and 0.85, respectively. As the solute concentration is above 2 wt%, the viscosity of the CMC-water solution exhibits nonlinear (exponential) increasing with increasing the solute concentration (typical of non-Newton fluids).
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Synthesis of sodium carboxymethyl cellulose using bleached crude cellulose fractionated from cornstalk
descriptionPublicationkeyboard_double_arrow_right Article , Journal 2017Publisher:Elsevier BVFunded by:NSERC
NSERC
Authors: Chunbao (Charles) Xu; Chunbao (Charles) Xu; Shanghuan Feng; Gang Chen; +5 Authors
Chunbao (Charles) Xu; Chunbao (Charles) Xu; Shanghuan Feng; Gang Chen; An Li; Zhongshun Yuan; Takashi Kuboki; Tao Shui; Hengfu Shui;
doi: 10.1016/j.biombioe.2017.06.016
doi: 10.1016/j.biombioe.2017.06.016
Abstract In this study, crude cellulose derived from cornstalk, after bleaching, was used as raw material for the synthesis of sodium carboxymethyl cellulose (CMC) by reacting with the cellulose with NaOH and chloroacetic acid at 75 °C for 1.5 h. Effects of alkali dosage, concentration of chloroacetic acid on the physical and chemical properties of the CMC products were investigated. It was revealed that the reactants alkali reagent/chloroacetic acid/cellulose at the molar ratio of 4.6:2.8:1and 4:2.5:1, or at the molar ratio of NaOH/ClCH 2 COOH ≈1.6–1.64, resulted in CMC products of relatively high water solubility. The viscosity-average molecular weight M v of these two CMC products obtained at molar ratios of 4.0:2.5:1 and 4.6:2.8:1 is in the range of 1.94 × 10 4 –2.48 × 10 4 g mol −1 , and the average DS of the two products are 0.57 and 0.85, respectively. As the solute concentration is above 2 wt%, the viscosity of the CMC-water solution exhibits nonlinear (exponential) increasing with increasing the solute concentration (typical of non-Newton fluids).
Biomass and Bioenerg...arrow_drop_down
Biomass and Bioenergy
Article . 2017 . Peer-reviewed
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Biomass and Bioenergy
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Data sources: Microsoft Academic Graph
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Biomass and Bioenerg...arrow_drop_down
Biomass and Bioenergy
Article . 2017 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
Biomass and Bioenergy
Journal
Data sources: Microsoft Academic Graph
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shareshareShare
citeCite
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Please grant OpenAIRE to access and update your ORCID works.
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Synthesis of sodium carboxymethyl cellulose using bleached crude cellulose fractionated from cornstalk

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