Effect of the strong electrolyte addition on rheological properties of aqueous solutions of sodium carboxymethyl cellulose

• Autorzy: Broniarz-Press L. , Różański J. , Dryjer S. , Bednarz J.
• Konferencja: Second International Conference on Engineering Rheology ICER 2003
• Języki publikacji: EN

Abstrakty

EN

The object of the studies was to determine the effect of leading of various additives to different molecular masses (Mw = 250000 and Mw = 700000) Na-CMC aqueous solutions on the change of rheological properties of these solutions. The additives studied were sodium sulphate, sodium chloride, potassium chloride, sodium carbonate, potassium ferricyanide and ferrocyanide, sodium hydroxide as potentially useful in electrochemical technique. It has been shown that the presence of salt in a solution causes the decrease of consistency index and the increase of flow behaviour index as well as leads to better stabilization of solution (what results probably from the biodegradation slowing down a polymer studied). Additionally in the solutions of this type the electrochemical process has been carried out. No effect of the passage of current on rheological properties has been observed.

Słowa kluczowe

EN

sodium carboxymethyl cellulose; electrolyte; salt effect; molar mass effect

PL

reologia; elektrolit; masa molowa

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2003
• Tom: Vol. 8, no spec.
• Strony: 207--212
• Opis fizyczny: Bibliogr. 12 poz., wykr.

Twórcy

autor

Broniarz-Press L.

• Department of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND

autor

Różański J.

• Department of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND

autor

Dryjer S.

• Department of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND

autor

Bednarz J.

• Department of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND

Bibliografia

• [1] Barai B.K., Singhal R.S. and Kulkari P.R. (1997): Optimization carboxymethyl from water hyacinth (Eichornia crassipes). - Carbohydrate Polymers, vol.32, No.4, pp.229-231.
• [2] Bartelmus G. (1986): Experimental determination of individual transfer coefficient at the interface packed columns. - Chem. Process Eng., No.4, pp.527-543.
• [3] Głowacki P. (1983): Toms Effect Analysis and the Studies on the Chosen Flows Solutions. - Ph.D. Thesil, Poznań University of Technology.
• [4] Karcz J. (1996): Momentum transfer in a wall region of an agitated vessel wall. - Chem. Process Eng., vol,17, No.3, pp.403-421.
• [5] Kastner U., Hoffman H., Donges R. and Hilbig J. (1997): Structure and solution properties of sodium carboxymethyl cellulose. - Colloids Surface A: Physicochem. Eng. Aspects, vol.l23-124, No.15, pp.307-328.
• [6] Kulicke W.M., Reinhardt U., Fuller G.G. and Arendt O. (1996): Characterization carboxymethyl cellulost Solutions in terms of their molecularstructure and its influence on rheological behaviour. Polymer, vol.37, No. 13, pp.2723-2731.
• [7] Mahinpey N., Ojha M. and Trass O. (2001): Transient mass and heat transfer in a smooth pipe. Int. Journal of Heat Mass Transfer, vol.44, pp.3919-3930.
• [8] Selman J.R. and Tobias C.W. (1988): Mass transfer measurements by the limiting current technique. - Ad Electrochem. Eng., vol.l0, pp.211-318.
• [9] Stręk F. and Karcz J. (1999): Use of electrochemical technique in the mass transport studies in wall region of a stir tank. - Chem. Process Eng., vol.20, pp.3-22.
• [10] Sutey A. M. and Knudsen J. G. (1967): Effect of dissolved oxygen on the redox method for the measurement of me transfer coefficients. - Ind. Eng. Chem. Fundamentals, vol.6, No.l, pp.132-139.
• [11] Wragg A.A. (1977): Applications of the limiting diffusion current technique in Chemical engineering. Chem. En vol.1, pp.39-44.
• [12] Zhao W. and Trass O. (1997): Electrochemical mass transfer measurements in rough surface pipe flow: similar V- shaped grooves. - Int. Journal of Heat Mass Transfer, vol.40, No. 12, pp.2785- 2797.