On complexation between methyl cellulose and ammonium nitrate
Document Type
Article
Publication Date
1-1-2009
Abstract
Films of methyl cellulose (MC) doped with ammonium nitrate (NH(4)NO(3)) salt were prepared by solution casting. From X-ray diffraction, it can be inferred that films of pure MC and MC doped with 5 to 25 wt-% NH(4)NO(3) are amorphous. A small peak at 2 theta similar to 8 degrees indicates that there is interaction between MC and NH(4)NO(3) and a complex has formed. Pure MC has a conductivity of 3.08 x 10(-11) S cm(-1) at room temperature and the conductivity of MC doped with 25 wt-% NH(4)NO(3) is 2.10 x 10(-6) S cm(-1). The increase in conductivity is attributed to the increase in amorphousity and to the increase in number of mobile cations. However, for the sample doped with 30 wt-% NH(4)NO(3), some of the salt has recrystallised out of the polymer host. This is evidenced from the X-ray diffractogram. Recrystallisation of the salt reduces the number of mobile ions for conduction and resulted in a decrease in conductivity. The highest conducting sample was used as an electrolyte in an electric double layer capacitor.
Keywords
Methyl cellulose, Ammonium nitrate, Conductivity cyclic voltammetry, Amorphousity, Edlc, Conducting polymer electrolyte, Li-ion conduction, Salt concentration, Chitosan, Methylcellulose, Acrylonitrile, Batteries, Behavior, Films, Oxide
Divisions
PHYSICS
Publication Title
Materials Research Innovations
Volume
13
Issue
3
Publisher
Springer Verlag (Germany)
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA