ISSN:
1572-8943
Keywords:
atomic force microscopy (AFM)
;
confinement
;
friction
;
glass transition
;
polymers
;
scanning force microscopy (SFM)
;
scanning probe microscopy (SPM)
;
shear modulation
;
surface analysis
;
surface interaction
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract This paper reviews our recent progress in determining the surface glass transition temperature, Tg, of free and substrate confined amorphous polymer films. We will introduce novel instrumental approaches and discuss surface and bulk concepts of Tg. The Tg of surfaces will be compared to the bulk, and we will discuss the effect of interfacial interactions (confinements), surface energy, disentanglement, adhesion forces, viscosity and structural changes on the glass transition. Measurements have been conducted with scanning force microscopy in two different shear modes: dynamic friction force mode and locally static shear modulation mode. The applicability of these two nano-contact modes to Tg will be discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1010196214867
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