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Journal of Macromolecular Science, Part A
Pure and Applied Chemistry
Volume 49, 2012 - Issue 12
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Original Articles

Miscibility Studies of Chitosan and Starch Blends in Buffer Solution

Y. N. Sudhakar Department of Chemistry, Manipal Institute of Technology, Manipal, Karnataka, India
,
Sowmya Department of Chemistry, Manipal Institute of Technology, Manipal, Karnataka, India
,
M. Selvakumar Department of Chemistry, Manipal Institute of Technology, Manipal, Karnataka, India
&
D. Krishna Bhat Department of Chemistry, National Institute of Technology, Surathkal, Karnataka, India
Pages 1099-1105 | Received 01 Dec 2011, Accepted 01 Jun 2012, Published online: 24 Oct 2012
 
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Abstract

The miscibility of chitosan (CS) and starch in buffer solution (CH3COOH and CH3COONa) has been investigated by viscosity, density and refractive index methods at 303 K, 313 K, and 323 K. Various interaction parameters such as polymer-polymer and blend-solvent interaction parameters and heat of mixing have been calculated using viscosity and density data. The results indicated the existence of positive interactions in the blend polymer solutions and that they are miscible below 40% of starch compositions. The study also revealed that variation of temperature does have significant effect on the miscibility of chitosan and starch blends.

Acknowledgments

The authors are thankful to the DRDO, New Delhi, for providing financial support.

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