| Affiliation: | 1. Federal University of Piauí, Graduate Program in Materials Science, Polymers and Conjugated Materials Research Group, Av. Ininga S/N, Ininga, Teresina, CEP 64049-550 Piauí, Brazil;2. Department of Materials Engineering, Federal University of Piauí, Technology Center, Teresina, Piauí, Brazil;3. Federal University of Campina Grande, Center Science and Technology, Graduate Program in Materials Science and Engineering, Campina Grande, Paraíba, Brazil;4. Federal University of Piauí, Graduate Program in Materials Science, Polymers and Conjugated Materials Research Group, Av. Ininga S/N, Ininga, Teresina, CEP 64049-550 Piauí, Brazil Department of Materials Engineering, Federal University of Piauí, Technology Center, Teresina, Piauí, Brazil |
