Miscibility studies of HPMC/PEG blends in water by viscosity, density, refractive index and ultrasonic velocity method

Illiger, Sudhir Ramswamy and Fadnis, Chandralekha and Demappa, T. and Jayaraju, J. and Keshavayya, J. (2009) Miscibility studies of HPMC/PEG blends in water by viscosity, density, refractive index and ultrasonic velocity method. Carbohydrate Polymers, 75 (3). pp. 484-488. ISSN 1879-1344

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Official URL: http://doi.org/10.1016/j.carbpol.2008.08.014

Abstract

Hydroxy propyl methyl cellulose (HPMC)/polyethylene glycol (PEG) blends are edible polymer films used for food packing and directly in foodstuffs. However, they are water-soluble in ordinary temperature and have good mechanical properties. The miscibility of HPMC/PEG blend in water was studied by viscosity, ultrasonic velocity, density and refractive index techniques at 30 and 50 degrees C. Using viscosity data, the interaction parameters mu and alpha were calculated. These values revealed that HPMC/PEG blend is miscible when the HPMC content is more than 60 wt.% in the blend at 30 and 50 degrees C, below which is immiscible. Further the result was also confirmed by ultrasonic velocity, density, refractive index measurements, which also revealed that the change in temperature has no significant effect on the miscibility of HPMC/PEG polymer blend. (C) 2008 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Blend; Huggin's density; Hydroxy propyl methylcellulose; Miscibility; Poly(ethylene glycol); Refractive index; Ultrasonic velocity; Huggins plot; Interaction parameter; Viscosity
Subjects: M Polymer Science > Polymer Science
Divisions: PG Centre Mandya > Polymer Science
Depositing User: Shrirekha N
Date Deposited: 28 Aug 2019 07:49
Last Modified: 28 Aug 2019 07:49
URI: http://eprints.uni-mysore.ac.in/id/eprint/7232

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