Akademik Veri Yönetim Sistemi
POLYMERS FOR ADVANCED TECHNOLOGIES, cilt.36, sa.10, 2025 (SCI-Expanded, Scopus)
Polysilynes, also known as crosslinked polysilanes or polycarbosilanes (PCS), are widely used to produce polymer-derived ceramics (PDCs). A novel highly crosslinked PCS polymer was synthesized from an alternative monomer with a unique microstructure, enabling direct non-oxide ceramic production without the need for Kumada rearrangement-an additional crosslinking step required for traditional linear polysilanes such as SMP-10. Unlike SMP-10 and similar polyalkylsilanes, which typically require further post-synthetic modification to achieve the desired ceramic yield and structure, our new PCS precursor features a highly crosslinked backbone from the outset. Comprehensive characterization of this polymer was performed using UV/visible spectroscopy, gel permeation chromatography (GPC), ATR-FTIR, 1H-NMR, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Subsequent pyrolysis yielded a PDC, analyzed by optical microscopy, SEM, ATR-FTIR, Raman spectroscopy, and X-ray diffraction (XRD). The results demonstrate the successful synthesis and characterization of a novel PCS and its subsequent transformation into SiC ceramic, highlighting the potential of this PCS for enhanced ceramic yield and microstructural control.