Prediction of long-term mechanical properties of PVDF/BaTiO3 nanocomposite

• Published in: Journal of applied polymer science Vol. 131; no. 16
• Main Authors: Goodarzi, Vahabodin, Kokabi, Mehrdad, Razzaghi Kashani, Mehdi, Reza Bahramian, Ahmad
• Format: Journal Article
• Language: English
• Published: Hoboken, NJ Blackwell Publishing Ltd 15-08-2014; Wiley; Wiley Subscription Services, Inc
• Subjects: Applied sciences; Composites; conducting polymers; Exact sciences and technology; Forms of application and semi-finished materials; Materials science; morphology; nanoparticles; nanowires and nanocrystals; Polymer industry, paints, wood; Polymers; Technology of polymers; viscosity and viscoelasticity; Viscosity; Viscoelasticity; Elastic modulus; Rheological model; Storage modulus; conducting polymers; Theoretical study; Mechanical properties; Barium titanates; viscosity and viscoelasticity; Modeling; Oxide ceramics; Composite material; composites; nanoparticles; Creep curve; Morphology; Vinylidene fluoride polymer; nanowires and nanocrystals; Nanocomposite; Temperature time superposition; Rheological properties
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.40596

ABSTRACT
Low elastic modulus of polyvinylidene fluoride (PVDF) is a major drawback that can be compensated by adding nanoparticles. This work reports the long‐term mechanical behavior of PVDF nanocomposite containing BaTiO3 nanoparticle that is evaluated by creep test. The nanocomposite morphology was characterized by scanning and transmission electron microscopy techniques. The dynamic mechanical analysis (DMA) was employed to study the viscoelastic behavior of nanocomposite in a wide range of temperatures and frequencies. According to the creep tests, nanocomposite reduced the rate of the creep compliance at different temperatures. Moreover, the creep compliance for the nanocomposite sample decreased slightly in comparison with neat PVDF. Comparing the Burger's model and experimental results, the elastic and viscous parameters revealed the exactly opposite behavior with increasing temperature. The effect of frequencies on storage moduli of samples was investigated based on time–temperature superposition (TTS) method. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40596.