Crystalline and Elastomeric Poly(monothiocarbonate)s Prepared from Copolymerization of COS and Achiral Epoxide
| Autor: | Ming-Ran Li, Zhao-Qian Wan, Wei-Min Ren, Xiao-Bing Lu, Tian-Jun Yue |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Ethylene Polymers and Plastics Ethylene oxide Organic Chemistry Epoxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Elastomer 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallinity chemistry Polymer chemistry Materials Chemistry Copolymer Thermoplastic elastomer 0210 nano-technology Bifunctional |
| Zdroj: | Macromolecules. 50:63-68 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/acs.macromol.6b02089 |
| Popis: | The semicrystalline poly(monothiocarbonate)s were prepared by the copolymerization of carbonyl sulfide (COS) and ethylene oxide, an achiral epoxide, using a bifunctional chromium(III) complex as catalyst. The resultant copolymer, possessing perfectly alternating structure, high molecular weight, and narrow polydispersity, has a melting temperature of 128.2 °C, with a melting enthalpy up to 75.44 J/g. Moreover, an ABA triblock copolymer containing the “hard” semicrystalline poly(ethylene monothiocarbonate) (A) and the “soft” amorphous poly(propylene monothiocarbonate) (B) is synthesized by stepwise addition of epoxides. The tensile testing demonstrates the triblock copolymer may have the potential as a thermoplastic elastomer. |
| Databáze: | OpenAIRE |
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