pps proceeding - Abstract Preview

Dielectric Properties of Poly(Butylene Succinate) Nanocomposite Incorporated with Barium Strontium Titanate Powder

plungpongpan kittichin ⁽¹⁾, nootsuwan nollaphan ⁽²⁾, Koonsaeng Nattamon ⁽³⁾, Laobuthee Apirat ⁽⁴⁾, Manuspiya Hathaikarn ^(5)*

⁽¹⁾ the petroleum and petrochemical collage - Bangkok - Thailand, ⁽²⁾ bDepartment of Materials Engineering, Faculty of Engineering, Kasetsart University - Bangkok - Thailand, ⁽³⁾ Department of Chemistry, Faculty of Science, Kasetsart University - Bangkok - Thailand, ⁽⁴⁾ Department of Materials Engineering, Faculty of Engineering, Kasetsart University - Bangkok - Thailand, ⁽⁵⁾ The Petroleum and Petrochemical College, Chulalongkorn University - Bangkok - Thailand

Barium strontium titanate (Ba0.7Sr0.3TiO3 or BST) nanopowder was prepared by low temperature sol-gel method. The proper calcination temperature was found to be approximately 900 ̊C. The powder product yield was observed to be 9.42% of gel weight. The tetragonal perovskite structure of calcined powder was confirmed by XRD. Additionally, dielectric behavior of the BST powder was measured as a function of frequency ranging from 1 MHz to 100 MHz at ambient temperature by using a network analyser. The dielectric behavior of the BST showed the reduction of dielectric constant with increasing frequency (Max. dielectric constant = 600) whereas it exhibited very low loss tangent. Moreover, the thermal properties and dielectric behavior of poly(butylene succinate) integrated with BST powder were studied. The result showed the improvement of thermal stability and dielectric constant with increasing amount of BST powder. Tentative application for this nanocomposite thin film with good dielectric properties, flexibility, and process ability will be applicable as thin film capacitor for high-frequency electronic devices.