Title: Size-Dependent Depression of the Glass Transition Temperature in Polymer Films
Abstract:The glass transition temperature of thin polystyrene films has been measured as a function of film thickness. It is found that the glass transition decreases in temperature as the thickness of the fil...The glass transition temperature of thin polystyrene films has been measured as a function of film thickness. It is found that the glass transition decreases in temperature as the thickness of the film is reduced. The effect is not strongly molecular-weight dependent, ruling out chain confinement as the major cause; instead we suggest that at the surface of the glassy film a liquidlike layer exists whose size diverges as the glass transition temperature is approached from below.Read More
Publication Year: 1994
Publication Date: 1994-07-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 1745
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