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Shin, Hyeon Suk
Lab for Carbon and 2D Materials
Research Interests
  • Two-dimensional materials: graphene, transition metal dichalcogenides, h-BN, and their heterostructures

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Transition temperatures and molecular structures of poly(methyl methacrylate) thin films by principal component analysis: comparison of isotactic and syndiotactic poly(methyl methacrylate)

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dc.contributor.author Shin, Hyeon Suk ko
dc.contributor.author Lee, H ko
dc.contributor.author Jun, CH ko
dc.contributor.author Jung, YM ko
dc.contributor.author Kim, SB ko
dc.date.available 2014-09-11T07:01:49Z -
dc.date.created 2014-09-04 ko
dc.date.issued 2005-01 -
dc.identifier.citation VIBRATIONAL SPECTROSCOPY, v.37, no.1, pp.69 - 76 ko
dc.identifier.issn 0924-2031 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5895 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=11344280622 ko
dc.description.abstract This study determines the glass transition temperatures of isotactic and syndiotactic poly(methyl methacrylate) (PMMA) thin films and provides plausible molecular origins by principal component analysis (PCA). Principal components (PCs) are calculated for reflection-absorption FTIR spectra of isotactic and syndiotactic PMMA thin films in two spectral regions, 1000-1800 and 1100-1300 cm -1. The glass transition temperature is assigned to the highest peak (or the lowest valley) in the PC score plot. The glass transition temperatures of isotactic and syndiotactic PMMA thin films thus determined are 60 and 110-120°C, respectively, which are consistent with existing results obtained by other techniques. The PC loadings indicate that the carbonyl groups giving rise to bands in the range of 1700-1750 cm -1 affect the thermal properties and the flattened structure in the isotactic PMMA thin film but not in the syndiotactic PMMA thin film. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject FTIR spectra ko
dc.subject Isotactic ko
dc.subject Poly(methyl methacrylate) ko
dc.subject Syndiotactic ko
dc.subject Thin films ko
dc.subject Transition temperatures ko
dc.title Transition temperatures and molecular structures of poly(methyl methacrylate) thin films by principal component analysis: comparison of isotactic and syndiotactic poly(methyl methacrylate) ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-11344280622 ko
dc.identifier.wosid 000226688800009 ko
dc.type.rims ART ko
dc.description.wostc 13 *
dc.description.scopustc 15 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-04 *
dc.identifier.doi 10.1016/j.vibspec.2004.06.005 ko
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