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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

CELLULOSE NANOFIBRILS MODIFICATION WITH POLYANILINE AIMING AT ENHANCING ELECTRICAL PROPERTIES FOR APPLICATION IN FLEXIBLE ELECTRONICS

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Author(s):
Silva, Luiz Eduardo [1] ; Cunha Claro, Pedro Ivo [2] ; Sanfelice, Rafaela Cristina [3] ; Guimaraes Junior, Mario [4] ; De Oliveira, Juliano Elvis ; Ugucioni, Julio Cesar [1] ; Correa, Daniel Souza [1, 5] ; Denzin Tonoli, Gustavo Henrique [1]
Total Authors: 8
Affiliation:
[1] Univ Fed Lavras, POB 3037, BR-37200000 Lavras, MG - Brazil
[2] Univ Fed Sao Carlos, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Triangulo Mineiro, Inst Technol & Exact Sci, BR-38064200 Uberaba, MG - Brazil
[4] Fed Ctr Technol Educ Minas Gerais, 25 Minist Olavo Drummond Av, BR-38180510 Araxa, MG - Brazil
[5] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: CELLULOSE CHEMISTRY AND TECHNOLOGY; v. 53, n. 7-8, p. 775-786, JUL-AUG 2019.
Web of Science Citations: 0
Abstract

This work aims to produce, characterize and compare the properties of composite films of cellulose nanofibrils (CNF) and polyaniline (PANI) doped with two distinct acids. CNF were produced by mechanical fibrillation and combined with PANI via in situ polymerization. The results revealed that PANI presented successful polymerization and homogenous dispersion throughout the films with no distinctive separation from cellulose. The films containing PANI doped with HCl 1M and 2M presented significantly higher values in comparison with the films produced with only CNF. The charge transfer resistance evaluated by impedance spectroscopy for the films with PANI was lower than for the CNF films, indicating an improvement in electrical conduction, which in turn helped increasing charge storage. Even though the films of PANI doped with citric acid showed lower values compared to those of the films doped with HCl, citric acid is a suitable and greener dopant and therefore, it is worth being further investigated for conducting thin films containing cellulose for application in green electronics. (AU)

FAPESP's process: 17/12174-4 - Development of hybrid polymer nanofibers for agricultural applications
Grantee:Daniel Souza Corrêa
Support Opportunities: Regular Research Grants