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dc.contributor.authorGuyo, Upenyu
dc.contributor.authorOtto, Daniel P.
dc.contributor.authorYoung, Desmond A.
dc.contributor.authorVosloo, Hermanus C.M.
dc.date.accessioned2019-07-22T13:01:00Z
dc.date.available2019-07-22T13:01:00Z
dc.date.issued2020
dc.identifier.citationGuyo, U. et al. 2020. Aluminum triflate-cocatalyzed radical copolymerization of styrene and ethyl acrylate. Polymer bulletin, 77:2227-2247. [https://doi.org/10.1007/s00289-019-02847-3]en_US
dc.identifier.issn0170-0839
dc.identifier.issn1436-2449 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/32948
dc.identifier.urihttps://link.springer.com/article/10.1007/s00289-019-02847-3
dc.identifier.urihttps://doi.org/10.1007/s00289-019-02847-3
dc.description.abstractVarious random copolymers, poly(styrene-co-ethyl acrylate), were synthesized by free radical bulk copolymerization cocatalyzed by aluminum triflate (Al(OTf)3). The experimental conditions for the polymerization reactions, which include the amount of cocatalyst, polymerization time and ratio of styrene to ethyl acrylate, were investigated. The copolymer molecular weights were determined by gel permeation chromatography coupled to multi-angle laser light scattering. Compositional analysis was performed using proton nuclear magnetic resonance spectrometry. Electron paramagnetic resonance spectroscopy was also used to study the radical species which form in the presence or absence of Al(OTf)3. Kinetic studies were performed by determining monomer conversions as a function of time on gas chromatography. It was found that Al(OTf)3 accelerated the rate of polymerization significantly while also increasing the polymer molecular weights for a given conversion compared to the reactions where the triflate was absent. Al(OTf)3 can be a significantly more cost-effective and abundant alternative polymerization cocatalyst compared to some of the rare lanthanide triflatesen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectCopolymerizationen_US
dc.subjectEthyl acrylateen_US
dc.subjectStyreneen_US
dc.subjectAluminum triflateen_US
dc.subjectRadical stabilityen_US
dc.subjectGPCen_US
dc.subjectNMRen_US
dc.subjectEPRen_US
dc.titleAluminum triflate-cocatalyzed radical copolymerization of styrene and ethyl acrylateen_US
dc.typeArticleen_US
dc.contributor.researchID11333561 - Otto, Daniel Petrus
dc.contributor.researchID10063552 - Vosloo, Hermanus Cornelius Moolman
dc.contributor.researchID23297573 - Young, Desmond Austin
dc.contributor.researchID24967084 - Guyo, Upenyu


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