Effects of thermal ageing on the electrical and structural properties of polyaniline- polivinyl acetate composite film

Date

4-2009

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Alvin Karlo G. Tapia

Abstract

Perchloric acid (HCIO4) doped polyaniline (PAni) was chemically synthesized. It was then mixed with commercial polyvinyl-acetate (PVA) with 32:68 'mass ratio. The resulting mixture was flattened into films of thickness 0.21 f 0.05 mm. The different film samples were then aged at time intervals of 20, 40, 60, 80, 100, and 120 minutes, respectively. Electrical test showed that the peak conductivity was achieved at the 20-minute ageing time. FTIR results confirmed the presence of PAni and PVA. Results show that there is a decrease in conductivity with ageing. The presence of C-N+ peaks at 1355.8 cm-1 on the Raman spectra of all aged samples suggests that its conducting property remains even though it is degraded. The effect of ageing on the electrical properties of the aged PAni-PVA films is accounted not on its morphology but on its molecular structure.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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