Optimization of carboxymethylcellulose production
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Spasojević, Lj.D.Majdanac, Lj.D.
Petrović, Slobodan
Hrabar, J.P.
Nešović, V.M.
Galović, Z.M.
Cvetković, M.D.
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The aim of the study was to obtain water soluble carboxymethylcellulose (CMC) with a high degree of polymerization (DP gt 600) and high degree of substitution (DS gt 800), in industrial conditions, from easily degradable eucalyptus cellulose. The influence of temperature and of the NaOH:MCAA molar ratio cellulose on the structural and degradative changes in cellulose macromolecules during the process was investigated using ethanol as the reaction medium. The structural transformations during alkalization and etherification were investigated by X-ray diffraction. The degradative changes in the macromolecule were followed by determining the degree of polymerization. The degree of substitution and other chemical characteristics were determined by standard analytical methods. The thermal behaviour of the samples was studied by using a Perkin Elmer DSC-2 instrument. The rheological properties of the CMC solutions were also studied.
Keywords:
Carboxymethylcellulose / Degree of polymerization / Degree of substitution / Eucalyptus celluloseSource:
Cellulose Chemistry and Technology, 1997, 31, 5-6, 297-308Publisher:
- Editura Acad Romane, Bucuresti
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Spasojević, Lj.D. AU - Majdanac, Lj.D. AU - Petrović, Slobodan AU - Hrabar, J.P. AU - Nešović, V.M. AU - Galović, Z.M. AU - Cvetković, M.D. PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/127 AB - The aim of the study was to obtain water soluble carboxymethylcellulose (CMC) with a high degree of polymerization (DP gt 600) and high degree of substitution (DS gt 800), in industrial conditions, from easily degradable eucalyptus cellulose. The influence of temperature and of the NaOH:MCAA molar ratio cellulose on the structural and degradative changes in cellulose macromolecules during the process was investigated using ethanol as the reaction medium. The structural transformations during alkalization and etherification were investigated by X-ray diffraction. The degradative changes in the macromolecule were followed by determining the degree of polymerization. The degree of substitution and other chemical characteristics were determined by standard analytical methods. The thermal behaviour of the samples was studied by using a Perkin Elmer DSC-2 instrument. The rheological properties of the CMC solutions were also studied. PB - Editura Acad Romane, Bucuresti T2 - Cellulose Chemistry and Technology T1 - Optimization of carboxymethylcellulose production EP - 308 IS - 5-6 SP - 297 VL - 31 UR - https://hdl.handle.net/21.15107/rcub_technorep_127 ER -
@article{ author = "Spasojević, Lj.D. and Majdanac, Lj.D. and Petrović, Slobodan and Hrabar, J.P. and Nešović, V.M. and Galović, Z.M. and Cvetković, M.D.", year = "1997", abstract = "The aim of the study was to obtain water soluble carboxymethylcellulose (CMC) with a high degree of polymerization (DP gt 600) and high degree of substitution (DS gt 800), in industrial conditions, from easily degradable eucalyptus cellulose. The influence of temperature and of the NaOH:MCAA molar ratio cellulose on the structural and degradative changes in cellulose macromolecules during the process was investigated using ethanol as the reaction medium. The structural transformations during alkalization and etherification were investigated by X-ray diffraction. The degradative changes in the macromolecule were followed by determining the degree of polymerization. The degree of substitution and other chemical characteristics were determined by standard analytical methods. The thermal behaviour of the samples was studied by using a Perkin Elmer DSC-2 instrument. The rheological properties of the CMC solutions were also studied.", publisher = "Editura Acad Romane, Bucuresti", journal = "Cellulose Chemistry and Technology", title = "Optimization of carboxymethylcellulose production", pages = "308-297", number = "5-6", volume = "31", url = "https://hdl.handle.net/21.15107/rcub_technorep_127" }
Spasojević, Lj.D., Majdanac, Lj.D., Petrović, S., Hrabar, J.P., Nešović, V.M., Galović, Z.M.,& Cvetković, M.D.. (1997). Optimization of carboxymethylcellulose production. in Cellulose Chemistry and Technology Editura Acad Romane, Bucuresti., 31(5-6), 297-308. https://hdl.handle.net/21.15107/rcub_technorep_127
Spasojević L, Majdanac L, Petrović S, Hrabar J, Nešović V, Galović Z, Cvetković M. Optimization of carboxymethylcellulose production. in Cellulose Chemistry and Technology. 1997;31(5-6):297-308. https://hdl.handle.net/21.15107/rcub_technorep_127 .
Spasojević, Lj.D., Majdanac, Lj.D., Petrović, Slobodan, Hrabar, J.P., Nešović, V.M., Galović, Z.M., Cvetković, M.D., "Optimization of carboxymethylcellulose production" in Cellulose Chemistry and Technology, 31, no. 5-6 (1997):297-308, https://hdl.handle.net/21.15107/rcub_technorep_127 .