Kinetics of the Aqueous Phase Copolymerization of MAA and PEGMA Macromonomer: Influence of Monomer Concentration and Side Chain Length of PEGMA
dc.contributor.author | Emaldi, Inaki | |
dc.contributor.author | Hamzehlou, Shaghayegh | |
dc.contributor.author | Sánchez Dolado, Jorge | |
dc.contributor.author | Leiza Recondo, José Ramón | |
dc.date.accessioned | 2018-12-26T10:55:00Z | |
dc.date.available | 2018-12-26T10:55:00Z | |
dc.date.issued | 2017-04-20 | |
dc.identifier.citation | Processes 5(2) : (2017) // Article ID 19 | es_ES |
dc.identifier.issn | 2227-9717 | |
dc.identifier.uri | http://hdl.handle.net/10810/30565 | |
dc.description.abstract | An in situ nuclear magnetic resonance spectroscopy (NMR) technique is used to monitor the aqueous-phase copolymerization kinetics of methacrylic acid (MAA) and poly(ethylene glycol) methyl ether methacrylate (PEGMA) macromonomers. In particular, the study analyses the effect of the number of ethylene glycol (EG) groups along the lateral chains of PEGMA and is carried out under fully ionized conditions of MAA at different initial monomer ratios and initial overall monomer concentrations (5-20 wt % in aqueous solution). The composition drift with conversion indicates that PEGMA macromonomer is more reactive than MAA. Individual monomer consumption rates show that the rates of consumption of both monomers are not first order with respect to overall concentration of the monomer. The reactivity ratios estimated from the copolymerization kinetics reveal, that for the short PEGMA, the reactivity ratios r(MAA) and r(PEGMA) increase with the solids content (SC). A totally different trend is obtained for the longer PEGMA, whose reactivity ratio (r(PEGMA23)) decreases with solids content, whereas the reactivity ratio of MAA remains roughly constant. | es_ES |
dc.description.sponsorship | This work has been carried out in the framework of the BASKRETE initiative under the umbrella of the EUSKAMPUS project. Iraki Emaldi acknowledges the funding provided by EUSKAMPUS Fundazioa, POLYMAT and TECANLIA for his scholarship. Shaghayegh Hamzehlou and Jose Ramon Leiza acknowledge the funding provided by MINECO (CTQ 2014-59016P) and Basque Government (IT-999-16). Jorge Sanchez Dolado acknowledges the funding for the GEI Green Concrete Project given by the Basque Government (2015 Emaitek Program). The authors also thank the discussion with Jose arlos de la Cal on the estimation of the reactivity ratios and they are grateful to Jose nacio Miranda and the SGIker Gipuzkoa Unit (UPV/EHU) for the NMR facilities. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/CTQ 2014-59016P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | aqueous-phase copolymerization | es_ES |
dc.subject | polyethylene glycol methacrylate monomers | es_ES |
dc.subject | reactivity ratios | es_ES |
dc.subject | ionization degree | es_ES |
dc.subject | solids content | es_ES |
dc.title | Kinetics of the Aqueous Phase Copolymerization of MAA and PEGMA Macromonomer: Influence of Monomer Concentration and Side Chain Length of PEGMA | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.mdpi.com/2227-9717/5/2/19 | es_ES |
dc.identifier.doi | 10.3390/pr5020019 | |
dc.departamentoes | Química aplicada | es_ES |
dc.departamentoeu | Kimika aplikatua | es_ES |
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Except where otherwise noted, this item's license is described as © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).