Studies of optical, morphological and electrical properties of POMA/PMMA blends, using two different levels of doping with CSA

Nizamara S Pereira,Maria J A Sales,Artemis M Ceschin

doi:10.1590/s0104-14282012005000051

Nizamara S Pereira, Maria J A Sales + Show 1 more

Open Access

https://doi.org/10.1590/s0104-14282012005000051

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Journal: Polimeros-ciencia E Tecnologia	Publication Date: Aug 14, 2012
Citations: 5	License type: cc-by

Affiliation: Universitas Nusa Bangsa

Abstract

Poly(o-methoxyaniline) (POMA) was synthesized by oxidative polymerization of the monomer o-methoxyaniline. POMA/poly(methyl methacrylate) (PMMA) blends were produced by dissolving both polymers in chloroform (CHCl3).The amount of camphor sulfonic acid (CSA) used as dopant of POMA was different, providing two methods for preparation of the blends. Solutions were analyzed by Fourier transform infrared spectroscopy (FTIR) and then deposited on glass substrate by spin coating for characterization by atomic force microscope (AFM) and current versus voltage (I × V) curves. FTIR spectra of solutions were similar as expected. In the AFM images a reduction and/or loss of globules common in conducting polymers (CP) such as polyaniline (PANI) and its derivatives was observed. Films produced with different amounts of CSA presented distinct, linear and non-linear I × V curves.

Highlights

Poly(methyl methacrylate) (PMMA) blends were produced by dissolving both polymers in chloroform (CHCl3).The amount of camphor sulfonic acid (CSA) used as dopant of POMA was different, providing two methods for preparation of the blends
A possible explanation for the blends prepared by method 2 presenting a current 400 times smaller than that obtained by method 1 is the possibility that poly(methyl methacrylate) (PMMA) caused a twisting of the POMA chains
Globules observed in the atomic force microscope (AFM) images of POMA/PMMA blends prepared by method 1 were reduced and/or destroyed in POMA/PMMA blends prepared by method 2

Summary

Introduction

Poly(methyl methacrylate) (PMMA) blends were produced by dissolving both polymers in chloroform (CHCl3).The amount of camphor sulfonic acid (CSA) used as dopant of POMA was different, providing two methods for preparation of the blends. S. et al - Studies of optical, morphological and electrical properties of POMA/PMMA blends, using two different levels of doping with CSA POMA/PMMA blends were prepared by mixing the two polymers in chloroform, using two different methods.

Results

Conclusion