Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 52, Issue 9, Pages 1300-1305Publisher
WILEY
DOI: 10.1002/pola.27118
Keywords
ADMET; castor oil; metathesis; miniemulsion polymerization; renewable resources; nanoparticles
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Funding
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- BMBF (Bundesministerium fur Bildung und Forschung)
- CAPES, Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior [BEX 8741/11-5, BEX 8801/11-8]
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This work investigates acyclic diene metathesis (ADMET) polymerization reactions in aqueous miniemulsion. Different types of ruthenium-based catalysts and different surfactants (anionic, cationic, and nonionic) were evaluated. A Ru-indenylidene catalyst (Umicore M2) showed higher activity in water if compared to the Ru-benzylidene catalysts (Hoveyda Grubbs second generation and Grubbs first generation). Moreover, the catalyst activity was affected by the type of the surfactant. In summary, the Umicore M2 catalyst and the nonionic poly(ethylene oxide) based surfactant Lutensol AT80 were found to be the most suitable combination for ADMET reactions in miniemulsion allowing the preparation of polymers with number average molecular weight (M-n) of up to 15 kDa. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1300-1305
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