Thermal analysis and infrared spectroscopy of acetic anhydride plasma treated chitosan films

Authors

Sidney M. Palardonio ⋅ PH National Institute of Physics, University of the Philippines Diliman
Philippe Martin B. Tingzon ⋅ PH National Institute of Physics, University of the Philippines Diliman
Apollo R. Agcaoili ⋅ PH Material Science and Engineering Program, University of the Philippines Diliman
Henry J. Ramos ⋅ PH National Institute of Physics, University of the Philippines Diliman
Rinlee Butch M. Cervera ⋅ PH Advanced Ceramics Laboratory, University of the Philippines Diliman

Abstract

This study investigates the effects of acetic anhydride plasma treatment of chitosan films. Chitosan films were prepared by solvent casting method and then exposed to acetic anhydride plasma for 1, 3, and 5 mins. ATR-FTIR revealed that –-NH₂ groups were oxidized to -C≡N. Non-hydrogen bonded –OH groups appeared as hydrogen bonding with water was diminished. Entrapment of the CO₂ gas was not observed. Reacetylation was unsuccessful as no C=O group was introduced. DSC studies suggested that the thermal stability of the acetic anhydride plasma treated films were found to be higher than unmodified films.

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Issue

2015: Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2015-PB-29

Section

Poster Session PB

Published

2015-06-03

How to Cite

[1]

SM Palardonio, PMB Tingzon, AR Agcaoili, HJ Ramos, and RBM Cervera, Thermal analysis and infrared spectroscopy of acetic anhydride plasma treated chitosan films, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-PB-29 (2015). URL: https://proceedings.spp-online.org/article/view/1235.