The rheological characteristics of 5% solutions of Na-carboxymethylcellulose (CMC)I of various origin were investigated. Depending on the molar mass (1.25-1.94 x 10(5) g mol(-1)), i.e., the degree of polymerization (545-851) and degree of substitution (0.748-1.039), as well as the electrolyte (NaCl) content (0.55-36.40%), it was found that microgel particles appear in some cases, while in other cases there are entanglements or isolated particles of CMC macromolecules in solution. Stronger macromolecular interactions were observed when the degree of polymerization was greater than about 600 and the degree of substitution was higher than approximately 0.8. The rheological characteristics of the investigated samples are discussed in relation to the macromolecular structure (defined by X-ray powder diffraction and FT-IR spectroscopy) in the solid state.
Ključne reči:
Na-carboxymethylcellulose / rheological characteristics / degree of polymerization / degree of substitution / microgel particles / entanglement
Izvor:
Journal of the Serbian Chemical Society, 1998, 63, 4, 279-287
TY - JOUR
AU - Hrabar, J
AU - Poleti, Dejan
AU - Drmanić, Saša
AU - Galović, Z
AU - Majdanac, Lj.D.
PY - 1998
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/177
AB - The rheological characteristics of 5% solutions of Na-carboxymethylcellulose (CMC)I of various origin were investigated. Depending on the molar mass (1.25-1.94 x 10(5) g mol(-1)), i.e., the degree of polymerization (545-851) and degree of substitution (0.748-1.039), as well as the electrolyte (NaCl) content (0.55-36.40%), it was found that microgel particles appear in some cases, while in other cases there are entanglements or isolated particles of CMC macromolecules in solution. Stronger macromolecular interactions were observed when the degree of polymerization was greater than about 600 and the degree of substitution was higher than approximately 0.8. The rheological characteristics of the investigated samples are discussed in relation to the macromolecular structure (defined by X-ray powder diffraction and FT-IR spectroscopy) in the solid state.
PB - Serbian Chemical Society, Belgrade
T2 - Journal of the Serbian Chemical Society
T1 - Viscoelastic properties of Na-carboxymethylcellulose solutions
EP - 287
IS - 4
SP - 279
VL - 63
UR - https://hdl.handle.net/21.15107/rcub_technorep_177
ER -
@article{
author = "Hrabar, J and Poleti, Dejan and Drmanić, Saša and Galović, Z and Majdanac, Lj.D.",
year = "1998",
abstract = "The rheological characteristics of 5% solutions of Na-carboxymethylcellulose (CMC)I of various origin were investigated. Depending on the molar mass (1.25-1.94 x 10(5) g mol(-1)), i.e., the degree of polymerization (545-851) and degree of substitution (0.748-1.039), as well as the electrolyte (NaCl) content (0.55-36.40%), it was found that microgel particles appear in some cases, while in other cases there are entanglements or isolated particles of CMC macromolecules in solution. Stronger macromolecular interactions were observed when the degree of polymerization was greater than about 600 and the degree of substitution was higher than approximately 0.8. The rheological characteristics of the investigated samples are discussed in relation to the macromolecular structure (defined by X-ray powder diffraction and FT-IR spectroscopy) in the solid state.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Viscoelastic properties of Na-carboxymethylcellulose solutions",
pages = "287-279",
number = "4",
volume = "63",
url = "https://hdl.handle.net/21.15107/rcub_technorep_177"
}
Hrabar, J., Poleti, D., Drmanić, S., Galović, Z.,& Majdanac, Lj.D.. (1998). Viscoelastic properties of Na-carboxymethylcellulose solutions. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 63(4), 279-287.
https://hdl.handle.net/21.15107/rcub_technorep_177
Hrabar J, Poleti D, Drmanić S, Galović Z, Majdanac L. Viscoelastic properties of Na-carboxymethylcellulose solutions. in Journal of the Serbian Chemical Society. 1998;63(4):279-287.
https://hdl.handle.net/21.15107/rcub_technorep_177 .
Hrabar, J, Poleti, Dejan, Drmanić, Saša, Galović, Z, Majdanac, Lj.D., "Viscoelastic properties of Na-carboxymethylcellulose solutions" in Journal of the Serbian Chemical Society, 63, no. 4 (1998):279-287,
https://hdl.handle.net/21.15107/rcub_technorep_177 .
