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Water-soluble polyamidhydroxyurethane swelling behaviour

V. MELNIG1,* , V. POHOATA1, L. OBREJA1, A. GARLEA1, M. CAZACU1

Affiliation

  1. Faculty of Physics, “Al. I. Cuza” University, Bd. Carol I, Nr. 11A, Iasi, 700506, Romania

Abstract

In this paper, swelling/dehydration in distilled water and physiological Ringer solution of films network with less water of polyamidhydroxyurethane hydrogel was investigated. The kinetics of desorption process is different to that of sorption one. The swelling capacity in physiological Ringer solution is smaller than a half of that in distilled water. Water swelling increases the molecules volume and the interstitial volume between molecules that stress the network bounds and reduce the chains mobility. The network behaviour depends on relative humidity that determines the type of water bound process; the network of polyamidhydroxyurethane hydrogel changes from a ordered structure to a amorphous one by a series of intermediate stages..

Keywords

Water-soluble polyamidhydroxyurethane, Swelling/dehydration network characterization.

Submitted at: March 15, 2006
Accepted at: May 18, 2006

Citation

V. MELNIG, V. POHOATA, L. OBREJA, A. GARLEA, M. CAZACU, Water-soluble polyamidhydroxyurethane swelling behaviour, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1040-1043 (2006)