Thermal and mechanical properties of PVDF/PANI blends

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 13; no. 4; pp. 465 - 470
• Main Authors: Malmonge, Luiz Francisco, Langiano, Simone do Carmo, Cordeiro, João Manoel Marques, Mattoso, Luiz Henrique Capparelli, Malmonge, José Antonio
• Format: Journal Article
• Language: English
• Published: ABM, ABC, ABPol 01.12.2010; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: ENGINEERING, CHEMICAL; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; polyaniline; PVDF; thermal propriety; thermal propriety; PVDF; polyaniline
• ISSN: 1516-1439; 1980-5373; 1516-1439
• DOI: 10.1590/S1516-14392010000400007

Poly(vinylidene fluoride)/polyaniline blends of different composition were synthesized by chemical polymerization of aniline in a mixture of Poly(vinylidene fluoride) and N,N-dimethylformamide and their thermal and mechanical behavior was investigated as a function of the polyaniline doping level and the composition using thermogravimetric analysis, differential scanning calorimetry, dynamic mechanical analysis and tensile tests techniques. The results showed the blend obtained presents a good thermal stability with low weight loss up to 300 ºC, assigned to water and solvents evaporation. The glass transition and melting point is not affected by the PANI content in the blend, showing that polymers are no miscible. The films produced present a good sustainability; however the presence of the conducting polymer in the blend increases the tensile strength and the Young modulus, while diminishes the elongation at break, as compared to pure PVDF.