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Evaluation of the synergistic effect in Biopolymer/Conductive Nanoparticles/PZT three-phase piezoelectric composites, for sensors application

Grant number: 17/19913-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2018
Effective date (End): February 28, 2019
Field of knowledge:Engineering - Electrical Engineering - Electrical, Magnetic and Electronic Measurements, Instrumentation
Principal Investigator:Michael Jones da Silva
Grantee:Diego Silva de Melo
Home Institution: Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil


Nowadays, the search for intelligent materials that on the action of an external stimulus has its physical and / or chemical properties modified in response has been great. Within this class, we highlight the piezoelectric materials, which under the action of an external stimulus produce an electric current. This project aims at the development of a new piezoelectric three-phase biopolymer/ferroelectric ceramic with 0-3 connectivity and a third conductive phase (carbon black) aiming its application as a piezoelectric sensor. The main innovation of the project is the use of a polymer matrix from renewable and natural source, such as polyurethane based on castor oil, aiming to add even more value to these national products. The SEM technique will be used to study the composite morphology as well as the distribution of the ceramic particulate and the carbon black nanoparticles. Mechanical tests will be performed to evaluate the mechanical properties of the composites and to as certain the good phase interaction in the final mechanical properties of the composite. The evaluation of the piezoelectric coefficient of the samples will be performed as a function of the applied electric field, the amount of ceramic particles and conductive particulate. Finally, it will be proposed the development of a piezoelectric sensor to prevent cracks in construction.