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Enhancement of thermal stability and phase relaxation behavior of chitosan dissolved in aqueous l-lactic acid: Using ‘silver nanoparticles’ as nano filler

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Abstract

Chitosan films with various compositions of silver nanoparticles were prepared by solution casting with an aqueous solution of chitosan and l-lactic acid. The chitosan/Ag nanocomposites were characterized by wide angle X-ray diffraction (WAXD) and UV-vis spectroscopy. An analysis of the surface topography and size of the Ag nanoparticles (≤100 nm) were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. Thermogravimetric analysis (TGA/DTA) confirmed the increase in thermal stability with increasing Ag nanoparticle content in the nanocomposites. Dynamic thermal analysis (DMA) was used to examine the phase relaxation behavior of chitosan and its nanocomposites. The conductivity of chitosan/Ag nanocomposites was considered with respect to the frequency. Contact angle measurements were used to characterize the surface twistability, surface cleanliness, and hydrophilic/hydrophobic nature of the surface.

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Authors and Affiliations

  1. Division of Polymer Science and Engineering, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India

    V. K. Rana, Asutosh K. Pandey & Raj Pal Singh

  2. Lab. of Polymers Properties at Interfaces & Composites Research Center, University of South Brittany, 56321, Lorient Cedex, France

    B. Kumar

  3. Department of Chemical Technology, North Maharastra University, Jalgaon, 425001, India

    Satyendra Mishra

  4. Department of Polymer Science and Engineering, Pusan National University, Busan, 609-735, Korea

    Chang-Sik Ha

Authors
  1. V. K. Rana
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  2. Asutosh K. Pandey
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  3. Raj Pal Singh
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  4. B. Kumar
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  5. Satyendra Mishra
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  6. Chang-Sik Ha
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Correspondence to Raj Pal Singh.

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Rana, V.K., Pandey, A.K., Singh, R.P. et al. Enhancement of thermal stability and phase relaxation behavior of chitosan dissolved in aqueous l-lactic acid: Using ‘silver nanoparticles’ as nano filler. Macromol. Res. 18, 713–720 (2010). https://doi.org/10.1007/s13233-010-0801-9

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  • DOI: https://doi.org/10.1007/s13233-010-0801-9

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