Miscibility studies of hydroxypropyl cellulose/poly(vinyl pyrrolidone) in dilute solutions and solid state |
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| Authors: | K Sudarsan Reddy M N Prabhakar V Nagamaheswara Reddy G Sathyamaiah Y Maruthi M C S Subha K Chowdoji Rao |
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| Affiliation: | 1. Department of Polymer Science and Technology, S.K. University, Anantapur 515003, Andhra Pradesh, India;2. Department of Chemistry, S.K. University, Anantapur 515003, Andhra Pradesh, India |
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| Abstract: | The miscibility of hydroxypropyl cellulose (HPC) and poly(vinyl pyrrolidone) (PVP) blends in aqueous solutions was studied using viscosity, ultrasonic velocity, and refractive index techniques at 30°C. The interaction parameters ΔB, μ, and α calculated from viscosity using Sun and Chee methods indicated the miscibility of this blend. This was further confirmed by ultrasonic and refractive index results. The HPC/PVP blend films are prepared by solution casting method and are analyzed by differential scanning calorimetry, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopic techniques that confirmed the complete miscibility. This miscibility is due to the strong intermolecular H-bonding interactions between ? OH groups of HPC and C?O groups of PVP. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | hydroxypropyl cellulose poly(vinyl pyrrolidone) blends miscibility |
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