Anomalous properties of plasma treated hexagonal Boron Nitride dispersed polymer nano blends

• Published in: Journal of polymer research 2022-10, Vol.29 (10), Article 430
• Main Authors: Humbe, Shankar S., Joshi, Girish M., Deshmukh, R. R., Kaleemulla, Shaik
• Format: Article
• Language: English
• Subjects: Air plasma; Boron nitride; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Crystal defects; Crystallites; Degree of crystallinity; Dielectric polarization; Dielectric properties; Dielectrics; Dispersion; Electric properties; Electrical conductivity; Fluorides; Fourier transforms; Frequency ranges; Heat conductivity; Heat transfer; Industrial Chemistry/Chemical Engineering; Infrared spectroscopy; Interlayers; Morphology; Original Paper; Plasma; Plasma physics; Polymer blends; Polymer Sciences; Polymers; Polysulfone resins; Polyvinylidene fluoride; Polyvinylidene fluorides; Raman spectroscopy; Spectrum analysis; Thermal conductivity; Thermoplastic resins; Thermoplastics; X-ray spectroscopy
• ISSN: 1022-9760; 1572-8935
• DOI: 10.1007/s10965-022-03277-y

Recently plasma treatment has become interested technique for surface modification of nano fillers. Thermoplastics such as of Polyvinylidene fluoride (PVDF), Polysulfone (PSF) are great choice for polymer nano blends. Excellent dielectric properties are the prerequisites for electronic applications. In this work, Polyvinylidene fluoride (PVDF)/Polysulfone (PSF) polymer nanoblends were fabricated by dispersing untreated (UT) and air plasma treated (APT) hexagonal boron nitride (h-BN). Enhanced surface area of APT h-BN was determined by Brunauer–Emmett–Teller (BET) technique. Globular morphology of modified nano blends was investigated by Scanning electron microscopy (SEM). Elimination of nitrogen (N 2 ) from nano blends due to plasma exposure was confirmed by energy dispersive X-ray spectroscopy (EDAX). Incorporation of oxygenated chemical regions and vibrations due to plasma treatment was investigated by Fourier transform infrared (FTIR) spectroscopy. Interlayer interaction and defects oriented due to plasma treatment were studied by Raman spectroscopy. Quantification of modified structure in view of decreased interlayer spacing, crystallite size, degree of crystallinity of modified nano blends were determined by X-ray diffraction (XRD) in comparison to virgin blends. Modified nano blends exhibit the shift of dielectric polarization from lower to higher frequency range. Increased thermal conductivity of modified blends was addressed by Lee’s disc method. Loading of treated h-BN in PVDF/PSF blends demonstrated the interesting anomalous properties such as structure, morphology, dielectric, thermal conductivity as emerging blend suits for electronic applications.