Design and Development of Allyl Terminal Triaryl Pyridine Core Skeletal Modified Benzoxazines Based Polybenzoxazine-Silica (PBZ-SiO2) Hybrid Nanocomposites
| Autor: | Priya Rp, M. Dharmendirakumar, Sundaram Gunasekaran |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nanocomposite Biomedical Engineering Bioengineering General Chemistry Dielectric Condensed Matter Physics chemistry.chemical_compound chemistry Polymerization Phase (matter) Polymer chemistry Pyridine General Materials Science Dispersion (chemistry) Glass transition Mannich reaction |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 15:9509-9519 |
| ISSN: | 1533-4899 1533-4880 |
| DOI: | 10.1166/jnn.2015.10741 |
| Popis: | A series of skeletal modified novel allyl terminal benzoxazines (BZ-als) have been successfully designed and developed using triaryl pyridine core diamines via conventional one-pot Mannich reaction. The polybenzoxazine-silica (PBZ-SiO2) nanocomposites were prepared by thermal ring-opening polymerization of benzoxazines with different weight percentages of 3-methacryloxypropyltrimethoxysilane through in-situ sol-gel method. The formation of hybrid nanocomposites was confirmed by FT-IR. The substantial enhancement in the glass transition temperature was remarked for PBZ-SiO2 hybrids than their respective neat PBZ systems. The dielectric constant of the nanocomposites was found decreased with an increment in the silica content. The shift in the characteristic absorption/emissions corresponding to the neat PBZs toward lower wave-length ascertains the successful formation of PBZ-SiO2 nanocomposites. The discernible phase behaviour observed morphological studies reveals the molecular-level dispersion of silica particles over the organic networks. |
| Databáze: | OpenAIRE |
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