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dc.contributoren-US
dc.creatorKatir, Nadia
dc.creatorAndrade, Daniela
dc.creatorDahrouch, Mohamed
dc.creatorDíaz, Enzo
dc.creatorGatica, Nicolas
dc.creatorHourlier, Djamila
dc.creatorReyes, Nazmy
dc.creatorZarraga, Miguel
dc.date2015-12-10
dc.date.accessioned2019-04-16T16:42:44Z
dc.date.available2019-04-16T16:42:44Z
dc.identifierhttps://www.jcchems.com/index.php/JCCHEMS/article/view/44
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/42335
dc.descriptionHere we report the synthesis of news branched polyesters derived from the trans-esterification reactions at moderate temperatures (140-190°C), either from polyglycols with different molecular weights and monomers such as germylated fatty tri-esters, or from dimethyl terephtalate and germylated fatty tri-alcohol. The structure of the resulting polymers was determined by elemental analysis, FTIR, and 13C CP MAS NMR, and their thermal properties by thermogravimetry analysis and differential scanning calorimetry. 13C CP MAS NMR analysis indicates that the characteristic signals due to the methoxy groups of the germylated fatty tri-ester and the CH2OH group of germylated fatty tri-alcohol completely disappeared. This suggests that the trans-esterification process reached a nearly complete conversion. All germylated branched polyesters are insoluble in classic organic solvents due to their polydimensional structure. Thermal properties of these new materials showed that they do not present any cristallinity phase, and undergo thermal decomposition above 300°C.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherSociedad Chilena de Químicaen-US
dc.relationhttps://www.jcchems.com/index.php/JCCHEMS/article/view/44/42
dc.rightsCopyright (c) 2016 Nadia Katir, Daniela Andrade, Mohamed Dahrouch, Enzo Díaz, Nicolas Gatica, Djamila Hourlier, Nazmy Reyes, Miguel Zarragaen-US
dc.rightshttp://creativecommons.org/licenses/by-sa/4.0en-US
dc.sourceJournal of the Chilean Chemical Society; Vol 61, No 1 (2016): Journal of the Chilean Chemical Societyen-US
dc.source0717-9707
dc.subjectPolymer synthesis; Thermal properties; Branched biopolyesters; Fatty compounds; Germanium compoundsen-US
dc.titleBRANCHED POLYESTERS FROM GERMYLATED AND FATTY COMPOUNDSen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US


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