Abstract
Conducting polymer film has been found to be good alternative for conventional metal film in the application of flexible conductors for stretchable electronics. This research aims to produce green conductive polymer film with good mechanical and electrical performance through incorporation of polyaniline (PAni) as conductive material and carboxymethyl cellulose (CMC) as natural reinforcing filler in grafted rubber host. Different molar ratios of aniline (Ani) monomer and docusate sodium salt purum (AOT) dopant were used to produce PAni:AOT of molar ratio 5:3, 5:5 and 5:7. Grafted rubber/PAni/CMC films were synthesised using ex situ polymerisation and characterized by FTIR, XRD and SEM analyses. The mechanical and electrical performances were studied via universal tensile machine and resistivity meter, respectively. Incorporation of PAni in polymer films improved the electrical conductivity from 0 S cm−1 (MG49/CMC) to 1.388 \(\times\) 10–7–1.807 \(\times\) 10–2 S cm−1 (MG49/PAni/CMC). Addition of CMC enhanced the mechanical performances of the films with improved tensile strength and Young modulus from 8.0 (MG49/PAni 5:7) to 9.2–12.1 MPa (MG49/PAni 5:7/CMC) and 279 MPa (MG49/PAni 5:7) to 401–630 MPa (MG49/PAni 5:7/CMC), respectively. In conclusion, mechanical performance and electrical conductivity range of the synthesized conductive polymer film of MG49/PAni 5:7/CMC fulfil the recommended mechanical and electrical performance range of traditional and commercial conductive films.
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Acknowledgement
The authors would like to express our sincere gratitude to the Faculty of Applied Sciences of Tunku Abdul Rahman University College for providing the financial support (Research Grant, UC/I/G2016-86003), required facilities, chemicals, and instruments for this study. In addition, the authors would also like to express our appreciation to the Polymer Research Centre of Universiti Kebangsaan Malaysia (GUP-2018-037) for allowing the usage of their instruments and facilities needed for this study.
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Khong, CH., Lee, M.LY., Ahmad, I. et al. Development of grafted rubber/polyaniline/carboxymethyl cellulose film as green conductive polymer film. Polym. Bull. 79, 3829–3846 (2022). https://doi.org/10.1007/s00289-021-03689-8
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DOI: https://doi.org/10.1007/s00289-021-03689-8