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Influence of the pH on the Surface and Optical Properties of the Thin Film of Polyaniline / Polyethylene Terephthalate Composite. The AFM and Spectroscopies Studies

Published online by Cambridge University Press:  17 June 2011

Rafaella T. Paschoalin ,
Clarice Steffens ,
Alexandra Manzoli ,
Mhbuti R. Hlophe  and
Paulo S. P. Herrmann
Rafaella T. Paschoalin
Affiliation:
National Nanotechnology Laboratory for Agribusiness (LNNA), Embrapa Agricultural Instrumentation, P. O. Box 741, 13560-970, São Carlos, SP, Brazil Biotechnology Graduate Program-UFSCar, São Paulo, Brazil
Clarice Steffens
Affiliation:
National Nanotechnology Laboratory for Agribusiness (LNNA), Embrapa Agricultural Instrumentation, P. O. Box 741, 13560-970, São Carlos, SP, Brazil Biotechnology Graduate Program-UFSCar, São Paulo, Brazil
Alexandra Manzoli
Affiliation:
National Nanotechnology Laboratory for Agribusiness (LNNA), Embrapa Agricultural Instrumentation, P. O. Box 741, 13560-970, São Carlos, SP, Brazil
Mhbuti R. Hlophe
Affiliation:
North West University, Mafikeng Campus, South Africa
Paulo S. P. Herrmann
Affiliation:
National Nanotechnology Laboratory for Agribusiness (LNNA), Embrapa Agricultural Instrumentation, P. O. Box 741, 13560-970, São Carlos, SP, Brazil Biotechnology Graduate Program-UFSCar, São Paulo, Brazil
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Abstract

The effect of pH was investigated on the morphological and spectroscopic properties of PANI thin films on PET. PANI/PET strips were prepared by a pattern-printing technique and coated with a thin film of polyaniline in situ emeraldine oxidation state, doped with HCl (PANI-HCl), obtained by in situ polymerization. AFM, UV-VIS-NIR and FTIR/ATR spectroscopic results showed that pH has a great influence on the polymer layer morphology of the coating layers, while the intensity of vibrational bands decreases with rising pH, increase due to changes in the H-bonded structure in the polymer chain.

Keywords

sensoroptical propertiespolymerization
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1312: Symposium HH/II/JJ – Polymer-Based Materials and Composites—Synthesis, Assembly and Applications , 2011 , mrsf10-1312-hh03-27
Copyright
Copyright © Materials Research Society 2011

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References

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