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Titolo:
Molecular chemical structure on poly(methyl methacrylate) (PMMA) surface studied by sum frequency generation (SFG) vibrational spectroscopy
Autore:
Wang, J; Chen, CY; Buck, SM; Chen, Z;
Indirizzi:
Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA Univ Michigan Ann ArborMI USA 48109 , Dept Chem, Ann Arbor, MI 48109 USA Univ Michigan, Dept Macromol Sci & Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 Sci & Engn, Ann Arbor, MI 48109 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 48, volume: 105, anno: 2001,
pagine: 12118 - 12125
SICI:
1520-6106(200112)105:48<12118:MCSOPM>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION MASS-SPECTROMETRY; LIQUID INTERFACES; POLYMER SURFACE; TOF-SIMS; SPECTRUM; METHYL; ORIENTATION; INTENSITIES; SIMULATION; MONOLAYERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, Z Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 hem, Ann Arbor, MI 48109 USA
Citazione:
J. Wang et al., "Molecular chemical structure on poly(methyl methacrylate) (PMMA) surface studied by sum frequency generation (SFG) vibrational spectroscopy", J PHYS CH B, 105(48), 2001, pp. 12118-12125

Abstract

The molecular chemical structure of poly(methyl methacrylate) (PMMA) surface has been Studied by sum frequency generation (SFG) vibrational spectroscopy. By using various methods, we have shown that reflected SFG spectra of PMMA collected in our experiments only come from the polymer/air interface,not from the polymer/substrate or the bulk polymer. These SFG spectra are dominated by the vibrational bands from the ester methyl group. Ranges of orientation and orientation distribution of the ester methyl group on the PMMA surface have been deduced. The antisymmetric stretching vibrational bandof the alpha methyl group has been detected on the PMMA surface. Analysis shows that the alpha methyl groups are lying down on the surface. The methylene group has not been observed in SFG spectra, For comparison, we have also studied surface chemical structures of poly(methyl acrylate) (PMA) and dimethyl succinate by SFG.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 17:18:10