Novel hydrogels of PVP–CMC and their swelling effect on viscoelastic properties

✍ Scribed by Niladri Roy; Nabanita Saha; Takeshi Kitano; Petr Saha

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 477 KB
• Volume: 117
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.32056

✦ Synopsis

Abstract

Polyvinylpyrrolidone (PVP) and carboxymethyl cellulose (CMC) mixed hydrogels were prepared by heat treatment. The physical characteristics of the hydrogels were studied by Fourier transform infrared spectroscopy and scanning electron microscopy. The swelling study of the hydrogels in water shows remarkable water absorption property. The swelling effect on the rheological behavior of PVP‐, PVP–CMC‐, and CMC‐based hydrogels was investigated to judge its application on uneven surface of body. The rheological properties (storage modulus, loss modulus, and complex viscosity) of samples before drying and swelled (15, 30, and 60 min) were measured against angular frequency and composition. The hydrogel containing PVP/CMC ratio of 20 : 80 appeared to be the best hydrogel from rheological and water absorbent points of view. These properties and low cost of the materials utilized in this work suggest that this hydrogel is a viable alternative product for dressing materials. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010