Synthesis and characterization of aromatic copolyesters containing siloxane linkages in the polymer backbone
| Autor: | S. B. Idage, P. B. Waghmare, Bhaskar B. Idage, Shamal K. Menon |
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| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Bisphenol A Thermogravimetric analysis Condensation polymer Materials science Polymers and Plastics General Chemistry Polymer Copolyester Surfaces Coatings and Films chemistry.chemical_compound Differential scanning calorimetry chemistry Polymerization Siloxane Polymer chemistry Materials Chemistry |
| Zdroj: | Journal of Applied Polymer Science. 100:3222-3228 |
| ISSN: | 1097-4628 0021-8995 |
| Popis: | A new series of aromatic copolyesters containing siloxane linkages were prepared by the melt polymerization of bisphenol A (BPA) with eugenol end-capped siloxane (EuSi), diphenyl terephthalate (DPT), and diphenyl isophthalate (DPI) in varying ratio in the temperature range 220-290°C under reduced pressure in the presence of dibutyl tin dilaurate (DBTL) catalyst. The siloxane copolyesters prepared were characterized by FTIR, 1 H-NMR spectroscopy, solution viscosity, thermogravimetric analysis, differential scanning calorimetry, and X-ray diffraction. The effect of incorporation of eugenol end-capped siloxane was studied on the properties of BPA/DPI/DPT copolyesters. The glass-transition temperature of copolyester was decreased from 184 to 70°C by incorporation of 20% of eugenol end-capped siloxane. All copolyesters were found to be soluble in commonly used aprotic polar solvents and had film-forming properties. |
| Databáze: | OpenAIRE |
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