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Thermal stability of some self-assembling hydrogen-bonded polymers and related model complexes

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Show simple item record Armstrong, Gordon Buggy, Martin 2017-10-25T11:00:47Z 2017-10-25T11:00:47Z 2002
dc.identifier.issn 0959-8103
dc.description peer-reviewed en_US
dc.description.abstract The thermal stability of polymers is of fundamental importance both in processing and in many applications, eg, injection moulding, hot melts. As part of an investigation to determine the suitability of supramolecular polymers for novel applications in materials science, the thermal behaviour of two model compounds representing the principal classes of supramolecular polymer has been studied in some detail. p-Methoxybenzoic acid was complexed with 1,2-di(4-pyridyl) ethylene in 2:1 ratio as a model compound representing liquid-crystal association chain supramolecular polymers. It is proposed that the model compound degrades as a single species obeying first-order kinetics; the activation energy (E-act) of the degradation process was calculated to be 127kJ mol(-1). A model ureido-pyrimidinone dimer degraded in two steps, also following first order kinetics, with E-act = 71.5kJ mol(-1). The dimer was unaffected by annealing, suggesting that related polymers may be used at elevated temperatures. Polymer analogues of both model compounds were synthesized and their thermal behaviour was found to parallel that of the models. In light of these results, the implications for processing both supramolecular polymers are also considered. (C) 2002 Society of Chemical Industry. en_US
dc.language.iso eng en_US
dc.publisher John Wiley and Sons for Society of Chemical Industry en_US
dc.relation.ispartofseries Polymer International;51 (11), pp. 1219-1224
dc.rights This is the author's version of the following article:"Thermal stability of some self-assembling hydrogen-bonded polymers and related model complexes" The definitive version is available at en_US
dc.subject liquid-crystal association chain polymers en_US
dc.subject ureidopyrimidinone polymers en_US
dc.subject thermal stability en_US
dc.subject degradation en_US
dc.title Thermal stability of some self-assembling hydrogen-bonded polymers and related model complexes en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2017-10-25T10:47:01Z
dc.identifier.doi 10.1002/pi.949
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1133267
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed

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