Full text

Turn on search term navigation

© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Polyaniline (PANI) is a conductive polymer easily converted into a conducting state. However, its limited mechanical properties have generated interest in fabricating PANI composites with other polymeric materials. In this study, a PANI–prevulcanized latex composite film was synthesized and fabricated in two phases following chronological steps. The first phase determined the following optimum parameters for synthesizing nanosized PANI, which were as follows: an initial molar ratio of 1, a stirring speed of 600 rpm, a synthesis temperature of 25 °C, purification via filtration, and washing using dopant acid, acetone, and distilled water. The use of a nonionic surfactant, Triton X-100, at 0.1% concentration favored PANI formation in a smaller particle size of approximately 600 nm and good dispersibility over seven days of observation compared to the use of anionic sodium dodecyl sulfate. Ultraviolet–visible spectroscopy (UV-Vis) showed that the PANI synthesized using a surfactant was in the emeraldine base form, as the washing process tends to decrease the doping level in the PANI backbone. Our scanning electron microscopy analysis showed that the optimized synthesis parameters produced colloidal PANI with an average particle size of 695 nm. This higher aspect ratio explained the higher conductivity of nanosized PANI compared to micron-sized PANI. Following the chronological steps to determine the optimal parameters produced a nanosized PANI powder. The nanosized PANI had higher conductivity than the micron-sized PANI because of its higher aspect ratio. When PANI is synthesized in smaller particle sizes, it has higher conductivity. Atomic force microscopy analysis showed that the current flow is higher across a 5 µm2 scanned area of nanosized PANI because it has a larger surface area. Thus, more sites for the current to flow through were present on the nanosized PANI particles.

Details

Title
Synthesis and Characterization of a Novel Nanosized Polyaniline
Author
Banjar, Mohd Faizar 1   VIAFID ORCID Logo  ; Fatin Najwa Joynal Abedin 1   VIAFID ORCID Logo  ; Ahmad Noor Syimir Fizal 2 ; Norazilawati Muhamad Sarih 3 ; Md Sohrab Hossain 4   VIAFID ORCID Logo  ; Osman, Hakimah 5 ; Khalil, Nor Afifah 6   VIAFID ORCID Logo  ; Ahmad Naim Ahmad Yahaya 7   VIAFID ORCID Logo  ; Muzafar Zulkifli 7   VIAFID ORCID Logo 

 Malaysian Institute of Chemical and Bioengineering Technology, Universiti Kuala Lumpur (UniKL), Alor Gajah 78000, Melaka, Malaysia; [email protected] (M.F.B.); [email protected] (F.N.J.A.); [email protected] (N.A.K.) 
 Centre for Sustainability of Ecosystem & Earth Resources (Pusat ALAM), Universiti Malaysia Pahang, Lebuh Persiaran Tun Khalil Yaakob, Gambang 26300, Pahang, Malaysia; [email protected] 
 Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia; [email protected] 
 HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Fundamental and Applied Sciences Department, Universiti Teknologi Petronas (UTP), Seri Iskandar 32610, Perak, Malaysia; [email protected] 
 Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia; [email protected] 
 Malaysian Institute of Chemical and Bioengineering Technology, Universiti Kuala Lumpur (UniKL), Alor Gajah 78000, Melaka, Malaysia; [email protected] (M.F.B.); [email protected] (F.N.J.A.); [email protected] (N.A.K.); Polymer Science Program, Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat-Yai 90110, Songkla, Thailand 
 Green Chemistry and Sustainability Cluster, Branch Campus, Malaysian Institute of Chemical and Bio-Engineering Technology, Universiti Kuala Lumpur (UniKL), Taboh Naning, Alor Gajah 78000, Melaka, Malaysia; [email protected] 
First page
4565
Publication year
2023
Publication date
2023
Publisher
MDPI AG
e-ISSN
20734360
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2899435551
Copyright
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.