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https://hdl.handle.net/10316/8182
Título: | Single electron transfer-degenerative chain transfer living radical polymerization of N-butyl acrylate catalyzed by Na2S2O4 in water media | Autor: | Coelho, Jorge F. J. Silva, Ana M. F. P. Popov, Anatoliy V. Percec, Virgil Abreu, Mariana V. Gonçalves, Pedro M. O. F Gil, M. H. |
Data: | 2006 | Citação: | Journal of Polymer Science Part A: Polymer Chemistry. 44:9 (2006) 2809-2825 | Resumo: | Living radical polymerization of n-butyl acrylate was achieved by single electron transfer/degenerative-chain transfer mediated living radical polymerization in water catalyzed by sodium dithionate. The plots of number-average molecular weight versus conversion and ln[M]0/[M] versus time are linear, indicating a controlled polymerization. This methodology leads to the preparation of alpha,omega-di(iodo) poly (butyl acrylate) (alpha,omega-di(iodo)PBA) macroinitiators. The influence of polymerization degree ([monomer]/[initiator]), amount of catalyst, concentration of suspending agents and temperature were studied. The molecular weight distributions were determined using a combination of three detectors (TriSEC): right-angle light scattering (RALLS), a differential viscometer (DV), and refractive index (RI). The methodology studied in this work represents a possible route to prepare well-tailored macromolecules made of butyl acrylate in an environmental friendly reaction medium. Moreover, such materials can be subsequently functionalized leading to the formation of different block copolymers of composition ABA. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 2809-2825, 2006 | URI: | https://hdl.handle.net/10316/8182 | DOI: | 10.1002/pola.21389 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Química - Artigos em Revistas Internacionais |
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