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Shin, Hyeon Suk
Lab for Nanomaterials and Nanoanalysis(LNN)
Research Interests
  • Two-dimensional materials, graphene, transition metal dichalcogenides, h-BN, heterostructure

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Characterization of beta-transition of poly(tert-butyl methacrylate) thin films by two-dimensional infrared correlation spectral analysis

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Title
Characterization of beta-transition of poly(tert-butyl methacrylate) thin films by two-dimensional infrared correlation spectral analysis
Author
Shin, Hyeon SukJung, Young MeeChang, Tai HyunOzaki, YukihiroKim, Seung Bin
Keywords
2D correlation spectroscopy; Glass transition temperature; LB film; Poly(tert-butyl methacrylate) (PtBMA); Spin-coated film
Issue Date
200207
Publisher
ELSEVIER SCIENCE BV
Citation
VIBRATIONAL SPECTROSCOPY, v.29, no.1-2, pp.73 - 77
Abstract
Two-dimensional (2D) correlation analysis has been applied to temperature-dependent FTIR spectra of Langmuir-Blodgett (LB) and spin-coated films of poly(tert-butyl methacrylate) (PtBMA). Synchronous 2D correlation spectra were generated for two temperature regions, i.e. those below and above the glass transition temperature (Tg), to investigate the re-orientation of polymer chain. The autocorrelation analysis revealed that the re-orientation of the bbC-C-O and bbC-C=O bonds connected to chain backbone (bb) and that of the C-O bond of the tert-butoxy group are significant below and above the glass transition temperature, respectively. It is implied strongly from these observations that the simultaneous re-orientation of the chain backbone and the side chain is responsible for the β-transition of PtBMA.
URI
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DOI
http://dx.doi.org/10.1016/S0924-2031(01)00183-7
ISSN
0924-2031
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