Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0040-6031(01)00644-X
DC FieldValue
dc.titleStudies on the thermal stability of F- and non-F-containing ladder polyepoxysilsesquioxanes by TGA-FTIR
dc.contributor.authorWang, J.
dc.contributor.authorHe, C.
dc.contributor.authorLin, Y.
dc.contributor.authorChung, T.S.
dc.date.accessioned2014-10-09T10:01:01Z
dc.date.available2014-10-09T10:01:01Z
dc.date.issued2002-01-03
dc.identifier.citationWang, J., He, C., Lin, Y., Chung, T.S. (2002-01-03). Studies on the thermal stability of F- and non-F-containing ladder polyepoxysilsesquioxanes by TGA-FTIR. Thermochimica Acta 381 (1) : 83-92. ScholarBank@NUS Repository. https://doi.org/10.1016/S0040-6031(01)00644-X
dc.identifier.issn00406031
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/92352
dc.description.abstractThe thermal stability of non-F- (LPS-I) and F- (LPS-II) containing ladder polyepoxysilsesquioxanes under air and nitrogen was studied by DSC, TGA and TGA-FTIR techniques. The thermally curing temperature for LPS-II is about 20°C higher than that for LPS-I. Both LPS-I and LPS-II exhibits higher thermal stability under air and nitrogen as observed from TGA, where the decomposition temperatures at 5 and 10% weight loss were above 425 and 480°C, respectively. Under nitrogen, the higher decomposition temperature and residue from TGA was attributed to the gradual cleavage of C-Si and C-C bonds and high stability of F-containing side-chains (non-broken). Because of the weight gain from the oxidation of silsesquioxanes (RSiO3/2) to silica (SiO2), and gradual cleavage of F-containing side-chains, LPS-II exhibits higher decomposition temperature under air environment than under nitrogen. These phenomena detected from TGA could be observed directly from TGA-FTIR stack plots. As combined techniques for the evolved gas analysis, TGA-FTIR played an important role in explaining the phenomena of degradation related to the change of polymer chain structures during heating. © 2002 Elsevier Science B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0040-6031(01)00644-X
dc.sourceScopus
dc.subjectCleavage
dc.subjectFluorinated
dc.subjectLadder polyepoxysilsesquioxanes
dc.subjectOxidation
dc.subjectTGA-FTIR
dc.typeArticle
dc.contributor.departmentCHEMICAL & ENVIRONMENTAL ENGINEERING
dc.description.doi10.1016/S0040-6031(01)00644-X
dc.description.sourcetitleThermochimica Acta
dc.description.volume381
dc.description.issue1
dc.description.page83-92
dc.description.codenTHACA
dc.identifier.isiut000173128800011
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