BF3OEt2-coinitiated cationic polymerization of cyclopentadiene in the presence of water at room temperature

The cationic polymerization of cyclopentadiene (CPD) with 1-(4-methoxyphenyl)ethanol ( 1 )/BF 3 OEt 2 initiating system in CH 2 Cl 2 :CH 3 CN 4:1 (v/v) mixture at room temperature and in the presence of water ([H 2 O]/[BF 3 OEt 2 ] up to 8) is reported. The number-average molecular weights of obtain...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2011-11, Vol.67 (8), p.1413-1424
Main Authors: Radchenko, Alexei V., Kostjuk, Sergei V., Gaponik, Ludmila V.
Format: Article
Language:English
Subjects:
Applied sciences
Cationic polymerization
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Conversion
Cyclopentadiene
Dichloromethane
Ethanol
Exact sciences and technology
Initiators
Investigations
Molecular weight
Monomers
Organic Chemistry
Organic polymers
Original Paper
Physical Chemistry
Physicochemistry of polymers
Polymer Sciences
Polymerization
Polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
Regioselectivity
Room temperature
Soft and Granular Matter
Solvents
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Summary:The cationic polymerization of cyclopentadiene (CPD) with 1-(4-methoxyphenyl)ethanol ( 1 )/BF 3 OEt 2 initiating system in CH 2 Cl 2 :CH 3 CN 4:1 (v/v) mixture at room temperature and in the presence of water ([H 2 O]/[BF 3 OEt 2 ] up to 8) is reported. The number-average molecular weights of obtained polymers increased in direct proportion to monomer conversion or initial monomer concentration ( M n  ≤ 4,000 g mol −1 ) in agreement with calculated values, and were inversely proportional to initiator concentration. Polymer MWDs were relatively narrow ( M w / M n  = 1.4–1.7) up to 60% of monomer conversion. It was also shown that regioselectivity of CPD polymerization with 1 /BF 3 OEt 2 initiating system did not depend significantly on water, monomer, or initiator concentration (1,4-structures content was nearly 60% in all cases).
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-011-0455-6