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Open AccessArticle

Synthesis and Characterization of Acetic Acid-Doped Polyaniline and Polyaniline–Chitosan Composite

Department of Physics, Mapúa University Intramuros, Manila 1002, Philippines
Department of Physical Sciences and Mathematics, University of the Philippines Manila, Manila 1000, Philippines
Department of Physics, Silliman University, Dumaguete 6200, Philippines
Department of Physics and Geology, Negros Oriental State University, Dumaguete 6200, Philippines
Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima 30000, Thailand
Department of Mining, Metallurgical and Materials Engineering, College of Engineering, University of the Philippines Diliman, Quezon 1101, Philippines
Authors to whom correspondence should be addressed.
Biomimetics 2019, 4(1), 15;
Received: 11 November 2018 / Revised: 13 January 2019 / Accepted: 17 January 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Chitin- and Chitosan-Based Composite Materials)
Polyaniline–chitosan (PAni–Cs) composite films were synthesized using a solution casting method with varying PAni concentrations. Polyaniline powders used in the composite synthesis were polymerized using acetic acid as the dopant media. Raman spectroscopy revealed that the PAni powders synthesized using hydrochloric acid and acetic acid did not exhibit significant difference to the chemical features of PAni, implying that PAni was formed in varying concentrations of the dopant media. The presence of agglomerated particles on the surface of the Cs composite, which may have been due to the presence of PAni powders, was observed with scanning electron microscope–energy dispersive X-ray spectroscopy (SEM–EDX). Ultraviolet–visible (UV–Vis) spectroscopy further showed the interaction of PAni with Cs where the Cs characteristic peak shifted to a higher wavelength. Cell viability assay also revealed that the synthesized PAni–Cs composites were nontoxic and may be utilized for future biomedical applications. View Full-Text
Keywords: polyaniline; chitosan; composite; emeraldine; trypan blue assay polyaniline; chitosan; composite; emeraldine; trypan blue assay
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Pasela, B.R.; Castillo, A.P.; Simon, R.; Pulido, M.T.; Mana-ay, H.; Abiquibil, M.R.; Montecillo, R.; Thumanu, K.; Tumacder, D.; Taaca, K.L. Synthesis and Characterization of Acetic Acid-Doped Polyaniline and Polyaniline–Chitosan Composite. Biomimetics 2019, 4, 15.

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