"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Phase behaviour of polyvinyl alcohol/β-cyclodextrin blends

O. PĂDURARU1, C. VASILE1,* , C. N. CASCAVAL1, A. STOLERIU1

Affiliation

  1. Institute of Macromolecular Chemistry “Petru Poni”, 41A, Grigore Ghica Vodă Alley, 700487 Iaşi, Romania

Abstract

Films of poly(vinyl alcohol) (PVA) containing β-cyclodextrin (β-CD) were obtained by solution casting technique from aqueous solutions of constant concentration. After evaporation of the solvent, all films prepared from PVA/β-CD solutions were found to be transparent. The compatibility of the components in the blends was evaluated by optical microscopy (OM), rheology, Fourier transform infrared spectroscopy (FT-IR), and differential scanning calorimetry (DSC) techniques. Both visual and OM observations showed a good compatibility between PVA and β-CD. The rheologycal behaviour indicates the existence of the specific interactions between components which becomes stronger with the increase of β-CD content. The glass transition temperature (Tg) was found to increase with an increase of the β-CD content in the blends, even at low concentrations of β-CD..

Keywords

Polyvinyl alcohol, Cyclodextrin, Compatibility, Specific interactions.

Submitted at: Nov. 2, 2006
Accepted at: April 15, 2007

Citation

O. PĂDURARU, C. VASILE, C. N. CASCAVAL, A. STOLERIU, Phase behaviour of polyvinyl alcohol/β-cyclodextrin blends, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 1019-1024 (2007)