Kinetics of polymerization of N,N ′-bismaleimide-4,4′-diphenylmethane, barbituric acid and aminopropyl phenylsiloxane oligomer
| Autor: | Quoc-Thai Pham, Chia-Hsuan Chiang, Fu-En Yu, Jung-Mu Hsu, Chorng-Shyan Chern |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Barbituric acid
Kinetic model General Chemical Engineering Kinetics nutritional and metabolic diseases Diphenylmethane 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oligomer 0104 chemical sciences chemistry.chemical_compound chemistry Polymerization Polymer chemistry Particle growth Thermal stability 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of the Taiwan Institute of Chemical Engineers. 67:88-97 |
| ISSN: | 1876-1070 |
| DOI: | 10.1016/j.jtice.2016.08.007 |
| Popis: | Kinetics of polymerizations of N,N′-bismaleimide-4,4′-diphenylmethane (BMI)/barbituric acid (BTA) [2/1 (mol/mol)] in the presence and absence of 20 wt% aminopropyl phenylsiloxane oligomer (APSi) was investigated. Microgel particles (MPs) of BMI/BTA/APSi and BMI/BTA formed during polymerizations at 100 or 130 °C. The initial particle growth rate of BMI/BTA/APSi MPs is faster than that of pristine BMI/BTA MPs due to the presence of APSi nuclei. The residual C C of BMI in BMI/BTA/APSi MPs is 53 mol%, which is comparable to that of BMI in BMI/BTA MPs. The same kinetic model, characterized by reaction-controlled overall, could be used to describe both polymerization systems. The value of activation energy (54 kJ mol−1) for the polymerization of BMI/BTA/APSi is higher than that (43 kJ mol−1) for the polymerization of BMI/BTA. The thermal stability of the cured BMI/BTA/APSi polymer is better than that of the cured BMI/BTA polymer. |
| Databáze: | OpenAIRE |
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