Electrical and mechanical properties of self-supported hydroxypropyl methylcellulose-polyaniline conducting films

Author(s)

Cavalheiro Maeda, Vinicius ; Correa, Cintia Marques ; Mamoru Otsuka Hamanaka, Marcos Henrique ; Hamanaka, Viviane Nogueira ; Molina, Celso ; Camilo, Fernanda F.

• Document type: Journal article
• Source: RSC ADVANCES; v. 13, n. 12, p. 8-pg., 2023-03-08.

Abstract

The purpose of this work was to develop a simple method to produce self-supported films composed of hydroxypropyl methylcellulose (HPMC) and polyaniline (PANI) by the direct mixture of aqueous dispersions of both polymers with subsequent drying. The addition of HPMC, a cellulose derivative with an excellent film-forming capacity, was fundamental to overcoming the poor processability of PANI, which impairs its use in many technological applications. All films showed conductivity in the order of 10(-2) to 10(-3) S cm(-1), which is in the range for metals or semiconductors. The typical electroactivity of PANI was also maintained in the hybrid films. The thermal stability and the mechanical properties of the pristine PANI were also improved with the addition of HPMC. Cellulose-containing conducting polymers can be considered a material of the future, with possible applications in several areas, such as smart wallpapers, e-papers, and sensors. (AU)

• FAPESP's process: 21/08987-5 - Cellulose membranes as support for nanomaterials: preparation and properties evaluation
• Grantee: Fernanda Ferraz Camilo
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/20826-4 - SYNTHESIS AND PROPERTIES EVALUATION OF NANOPARTICLES SUPPORTED ON NON-MODIFIED CELLULOSE FILMS
• Grantee: Fernanda Ferraz Camilo
• Support Opportunities: Regular Research Grants