Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 38, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201600815
Keywords
block copolymer; copolymerization; functionalized cyclic olefin copolymer; single-site catalyst
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Funding
- National Natural Science Foundation of China [21174026]
- Program for New Century Excellent Talents in University
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Shu Guang project - Shanghai Municipal Education Commission
- Shanghai Education Development Foundation
- Fundamental Research Funds for the Central Universities
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Synthesis of hydroxy-functionalized cyclic olefin copolymer (COC) is achieved with remarkably high activity (up to 5.96 x 10(7) g-polymer mol-Ti-1 h(-1)) and controlled hydroxy group in a wide range (approximate to 17.1 mol%) by using ansa-dimethylsilylene (fluorenyl)(amido) titanium complex. The catalyst also promotes living/controlled copolymerization to afford novel diblock copolymers consisting of hydroxy-functionalized COC and semicrystalline polyolefin sequence such as polyethylene and syndiotactic polypropylene, where the glass transition temperature of the norbornene/10-undecen-1-ol segment and each block length are controlled by comonomer composition and copolymerization time, respectively.
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