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.
Ključne reči:
Carboxymethylcellulose / Degree of polymerization / Degree of substitution / Eucalyptus cellulose
Izvor:
Cellulose Chemistry and Technology, 1997, 31, 5-6, 297-308
TY - 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 .
