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Characterization study of flax/strontium titanate/polypropylene composite for low‐k dielectric applications
Author(s) -
P.V.S. Hari,
Jayamani Elammaran,
Soon Kok Heng,
Rahman Md. Rezaur,
Bakri Muhammad Khusairy Bin
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50577
Subject(s) - materials science , dielectric , strontium titanate , thermogravimetry , differential scanning calorimetry , composite material , composite number , polypropylene , ceramic , dielectric loss , glass transition , titanate , thermal stability , fiber , polymer , chemical engineering , physics , optoelectronics , engineering , thermodynamics
This study demonstrates the characterization of flax fiber reinforced polypropylene‐strontium titanate composite and dielectric study for low‐k dielectric applications. The composite was studied through thermal, morphological, and compositional aspects. Thermogravimetry analysis, differential scanning calorimetry shows a higher thermal stability with low glass transition temperatures and lowered decomposition temperatures of 375°C. The morphological study on the surface of this composites had revealed closely packed layers of fiber, ceramic and polymer matrix, which deduces the increased dielectric constants between 3.92 and 4.25 after the addition of strontium titanate. The dielectric constant was found to be significantly higher with a 78% increase with strontium titanate inclusion at relaxation frequencies between 1 kHz and 2 MHz, respectively. Besides, the dielectric property data showed that dielectric permittivity of 4.2 (low k) with the inclusion of natural fibers and ceramic at higher frequencies and lowered corresponding dielectric losses. The infrared spectroscopy results also show a reduction in hydroxyl groups and confirms the presence of bonds that are subjected to high interfacial bonding.