Synthesis of poly(ε-caprolactone)-block-poly(n-butyl acrylate) by combining ring-opening polymerization and atom transfer radical polymerization with Ti[OCH2CCl3]4 as difunctional initiator: I. Kinetic study of Ti[OCH2CCl3]4 initiated ring-opening polymerization of ε-caprolactone

Autor: Li, Peichun, Zerroukhi, Amar, Chen, Jianding, Chalamet, Yvan, Jeanmaire, Thomas, Xia, Zhean
Přispěvatelé: Laboratoire de Rhéologie des Matières Plastiques (IMP-LRMP), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Institute of Materials Science and Engineering, East China University of Science and Technology, East China University of Science and Technology, Lesur, Hélène
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Polymer
Polymer, Elsevier, 2009, 50 (5), pp.1109-1117
ISSN: 0032-3861
Popis: International audience; A new titanium alkoxide, Ti[OCH2CCl3]4, designed to combine the ring-opening polymerization (ROP) of 3-caprolactone and atom transfer radical polymerization (ATRP) of n-butyl acrylate, was synthesized through the ester-exchange reaction of titanium n-propoxide and 2,2,2-trichloroethanol. The mechanism and kinetics of Ti[OCH2CCl3]4 initiated bulk polymerization of 3-caprolactone were studied. The results demonstrate that the polymerization proceeds through the coordination-insertion mechanism and all the four alkoxide groups in Ti[OCH2CCl3]4 share a similar activity in the initiation. The determined polymerization activation energy is 70 kJ/mol. The polymerization process can be well predicted by the obtained kinetic parameters. Furthermore, PCL synthesized with Ti[OCH2CCl3]4 can be used as the macroinitiator in ATRP of n-butyl acrylate to synthesize poly(3-caprolactone)-block-poly(n-butyl acrylate) (PCL-b-PBA) copolymer.
Databáze: OpenAIRE
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