Photopolymerization of poly(ethylene glycol) dimethacrylates: The influence of ionic liquids on the formulation and the properties of the resultant polymer materials |
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Authors: | Sergey A Chesnokov Marya Yu Zakharina Alexander S Shaplov Elena I Lozinskaya Inna A Malyshkina Gleb A Abakumov Frederic Vidal Yakov S Vygodskii |
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Institution: | 1. G. A. Razuvaev Institute of Metalloorganic Chemistry Russian Academy of Sciences (IOMC RAS), Tropinin str. 49, Nizhnii Novgorod 603950, Russia;2. A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences (INEOS RAS), Vavilov str. 28, Moscow 119991, GSP‐1, Russia;3. Department of Physics, Moscow State University, Vorob'evy gory, Moscow 119992, Russia;4. Laboratoire de Physico‐chimie des Polymères et des Interfaces (LPPI), Universite' de Cergy‐Pontoise, 5 mail Gay‐Lussac, Cergy‐Pontoise Cedex 95031, France |
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Abstract: | The photo‐initiated polymerization of poly(ethylene glycol)dimethacrylates PEGDM(n)] in the presence of various ionic liquids (ILs) is reported. The influence of ILs concentrations as well as of their nature upon the photopolymerization kinetics was studied in detail. It was found that according to reactive ability in bulk and in solution photopolymerization, the investigated monomers can be divided into two groups: PEGDM(1)–PEGDM(2)–PEGDM(3) and PEGDM(4)–PEGDM(7‐8). ILs slightly influence the photopolymerization of monomers from the first group and greatly change kinetics of those from the second. Such behavior was explained by the theory of “kinetically favorable or unfavorable monomer associations.” It was demonstrated that certain ILs accelerate the photopolymerization of the highest PEGDMs and offer access to the polymers derived from low reactive monomers. Relying on the obtained data, the attempt to predict the structure of the “best” ionic additive for the given monomer photopolymerization was performed and proved. Finally, the influence of both residual and specially added ILs quantities upon the properties of obtained polymer materials was investigated. It was revealed that ILs can physically interact with polymer networks increasing their thermal stability, plasticizing films, and blocks, imparting ionic conductivity equal up to 3.62 × 10?3 Sm/cm at 25 °C. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2388–2409, 2010 |
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Keywords: | catalysis ionic liquids kinetics (polym ) oligomers photopolymerization polyethylene glycol dimethacrylates polymerization kinetics |
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