Anomalous Proton Conductivity in Chitin-Chitosan Mixed Compounds
Open Access
- 1 January 2020
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Materials Sciences and Applications
- Vol. 11 (01), 1-11
- https://doi.org/10.4236/msa.2020.111001
Abstract
In order to investigate a key factor for the appearance of proton conductivity in chitin-chitosan mixed compounds, the chitin-chitosan mixed compounds (chitin)x(chitosan)1-x were prepared and these proton conductivities have been investigated. DC proton conductivity σ is obtained from Nyquist plot of impedance measurement data, and the relationship between σ and mixing ratio x has been made clear. It was found that the x dependence of σ is non-monotonous. That is, σ shows the anomalous behavior, and has peaks around x = 0.4 and 0.75. This result indicates that there exist optimal conditions for the realization of high-proton conductivity in the chitin-chitosan mixed compound in which the number of acetyl groups is different. From the FT-IR measurement, we have found that the behavior of proton conductivity in (chitin)x(chitosan)1-x is determined by the amount of water content changed by x. Using these results, proton conductivity, which is important for the application of conducting polymers in chitin-chitosan mixed compounds, will be able to be easily controlled by adjusting the mixing ratio x.Keywords
This publication has 12 references indexed in Scilit:
- Synthesis and antimicrobial activity of α-aminophosphonates containing chitosan moietyArabian Journal of Chemistry, 2015
- Chitosan to Connect Biology to Electronics: Fabricating the Bio-Device Interface and Communicating Across This InterfacePolymers, 2014
- Electrochemical Biosensor Applications of Polysaccharides Chitin and ChitosanChemical Reviews, 2013
- Chitosan–silver oxide nanocomposite film: Preparation and antimicrobial activityBulletin of Materials Science, 2011
- The next generation of biomaterial developmentPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010
- Use of spray-dried chitosan acetate and ethylcellulose as compression coats for colonic drug delivery: Effect of swelling on triggering in vitro drug releaseEuropean Journal of Pharmaceutics and Biopharmaceutics, 2009
- FT-IR Analysis of Sugars in Aqueous Solution Using ATR Method.Nippon Shokuhin Kagaku Kogaku Kaishi, 1998
- Infrared spectra of the solvated hydronium ion: Vibrational predissociation spectroscopy of mass-selected H3O+.cntdot.(H2O)n.cntdot.(H2)mThe Journal of Physical Chemistry, 1990
- Gas phase infrared spectra of oxonium hydrate ions from 2 to 5 μThe Journal of Chemical Physics, 1977
- Infrared Spectra of Ices Ih and Ic in the Range 4000 to 350 cm—1The Journal of Chemical Physics, 1964