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2011 | 16 | 43 - 48
Article title

VISCOMETRIC STUDIES OF MICROCRYSTALLINE CHITOSAN/POLY(VINYL ALCOHOL) MIXTURES

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Abstracts
EN
In the present paper, the results of viscosity measurements in dilute solutions of microcrystalline chitosan (MCCh) with poly(vinyl alcohol) (PVA) of different degrees of hydrolysis are presented. Microcrystalline chitosan is blended with poly(vinyl alcohol) in aqueous 0.1 MCH3COOH/0.2 M NaCl. Viscosity measurements of dilute polymer solution were carried out in an Ubbelohde capillary viscometer. The final result depends on (I) the thermodynamic goodness of the solvent, on (II) the applied extrapolation method used for determination of the interaction parameters, on (III) the assumed miscibility criteria, on (IV) the degree of hydrolysis of PVA, and on (V) the blend composition.
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Year
Volume
16
Pages
43 - 48
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References
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  • Catsiff E. H., Hewett W. A.; (1962) The interaction of two dissimilar polymers in solution. J Appl Polym Sci vol. 6, pp. S30-S32.
  • Chee K. K.; (1990) Determination of polymer-polymer miscibility by viscometry. Eur Polym J Vol. 26, pp. 423-426.
  • Garcia R., Melad O., Gómez C. M., Figueruelo J. E., Campos A.; (1999) Viscometric study on the compatibility of polymer-polymer mixtures in solution. Eur Polym J Vol. 35, pp. 47-55.
  • Lewandowska K.; (2005) The miscibility of poly(vinyl alcohol)/poly(N−vinylpyrrolidone) blends investigated in dilute solutions and solids. Eur Polym J Vol. 41, pp. 55-64.
  • Huggins M. H.; (1942) The viscosity of dilute solutions of long-chain molecules. IV. Dependence on concentration. J Am Chem Soc Vol. 64, pp. 2716-2718.
  • Bohdanecký M., Kovář I.; (1982) Viscosity of Polymer Solution. vol2 In: Jenkins AD (ed) Elsevier Science, Amsterdam.
  • Struszczyk H.; (1987) Microcrystalline chitosan. I. Preparation and properties of microcrystalline chitosan. J Appl Polym Sci Vol. 33, pp. 177-189.
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article
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YADDA identifier
bwmeta1.element.psjd-32f605e4-4f68-4586-b99d-9ac8a4082742
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