Regioselective ring-opening metathesis polymerization of limonene oxide-substituted cyclooctene: The highly functional ethylene/vinyl ester copolymers
| Autor: | Yang Wang, Chulu Zhou, Zhizhou Liu, Jianhua Cheng, Lanxiao Zhao |
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| Rok vydání: | 2019 |
| Předmět: |
Polymers and Plastics
Organic Chemistry General Physics and Astronomy 02 engineering and technology ROMP 010402 general chemistry 021001 nanoscience & nanotechnology Metathesis 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Monomer chemistry Polymerization Cyclooctene Polymer chemistry Materials Chemistry Copolymer Side chain Ring-opening metathesis polymerisation 0210 nano-technology |
| Zdroj: | European Polymer Journal. 112:60-66 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2018.12.025 |
| Popis: | We present a new cyclooctene monomer with abundant biorenewable limonene oxide as side group via simple esterification, which could be polymerized by ring-opening metathesis polymerization (ROMP) using Hoveyda-Grubbs second-generation catalyst (H2) to afford polymer with remarkably high head-to-tail regioregularity and high trans-stereoregularity, as well as precisely placed ether branches on every eighth backbone carbon. Due to the presence of easily functional oxirane in limonene oxide side chain, the polymer can be efficiently modified by thiol, or dibutyl phosphate that shows impart flame-resistant property, even bearing pendent cyclic carbonate groups by CO2 insertion catalyzed by tetrabutylammonium bromide. In all cases, the main chains of the polymer remain intact. Differential scanning calorimetry (DSC), thermal gravimetric analyzer (TGA) and the microscale combustion calorimeter test (MCC) were used to study the thermal properties and flame retardancy. |
| Databáze: | OpenAIRE |
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