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Browsing by Author "Hong, SC"

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    Sum-frequency vibrational spectroscopic study of surface glass transition of poly(vinyl alcohol)
    (2003-05-06)
    Zhang, C
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    Hong, SC
    ;
    Ji, N
    ;
    Wang, YP
    ;
    Wei, KH
    Sum-frequency vibrational spectroscopy was employed to study surface glass transition of poly(vinyl alcohol) by monitoring the relaxation of rubbing-induced alignment of surface chains with increase of temperature. The observed chain relaxation is two-dimensional, parallel to the surface. The surface transition temperature is 58 +/- 2 degreesC, essentially the same as the bulk one.