Syndiotactic Polystyrene/Hybrid Silica Spheres of POSS Siloxane Composites Exhibiting Ultralow Dielectric Constant.
Homogeneously dispersed hybrid silica/syndiotactic polystyrene composites were investigated for low-κ dielectric applications. The composites were prepared by a solution blending method, and their microstructures were analyzed by SEM, TEM, and AFM. Crystallization and phase transformation behavior of sPS were investigated using differential scanning calorimetry and wide-angle X-ray diffraction. These composites exhibited improved thermal stability and reduced thermal expansion coefficients. Promising dielectric properties were observed for the composites in the microwave frequency region with a dielectric constant (κ = 1.95) and loss (tan δ = 10(-4)) at 5 GHz.
Materials Science and Technology Division (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology , Trivandrum 695019, Kerala, India.|Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110 001, India.
Angel Mary
AM
Joseph
Materials Science and Technology Division (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology , Trivandrum 695019, Kerala, India.|Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110 001, India.
Baku
B
Nagendra
Materials Science and Technology Division (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology , Trivandrum 695019, Kerala, India.|Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110 001, India.
K P
KP
Surendran
Materials Science and Technology Division (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology , Trivandrum 695019, Kerala, India.|Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110 001, India.
E Bhoje
EB
Gowd
crystallization; dielectric properties; hybrid silica; solution blending; syndiotactic polystyrene; thermal stability