Synthesis of high molecular weight isobutylene-α-methylstyrene copolymers containing alkenyl groups with a half sandwich scandium initiator system under mild conditions
| Autor: | Yang Li, Hui Yu, Jialin Yu, Jinghan Dong, Ke Yang, Hui Niu, Jing Wang, Kaihua Shen |
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| Rok vydání: | 2019 |
| Předmět: |
Isobutylene
Polymers and Plastics Organic Chemistry Cationic polymerization chemistry.chemical_element Bioengineering 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry visual_art Polymer chemistry visual_art.visual_art_medium Copolymer Scandium 0210 nano-technology |
| Zdroj: | Polymer Chemistry. 10:1724-1729 |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/c8py01749b |
| Popis: | Cationic copolymerizations of isobutylene (IB) and two alkenyl functionalized α-MeSt derivatives, respectively, 4-(2-methyl-2-propenyl)-α-methylstyrene (FSt1) and 4-(2-propenyl)-α-methylstyrene (FSt2), catalyzed by the half sandwich scandium complex, [(C5Me4SiMe3)Sc(CH2SiMe3)2THF]/[Ph3C][B(C6F5)4], at −35 °C produced a new family of high molecular weight random copolymers with pendant alkenyl groups (Mn: 12.3–18.7 × 104 g mol−1, CC: 1–20 mol%). Through post-modification, epoxy functionalized copolymers were obtained efficiently, demonstrating that the resulting copolymers with pendant alkenyl groups can serve as functional polyisobutylene based rubbery materials. |
| Databáze: | OpenAIRE |
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