Dynamic mechanical analysis at the submicron scale

Citation
F. Oulevey et al., Dynamic mechanical analysis at the submicron scale, POLYMER, 41(8), 2000, pp. 3087-3092
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER
ISSN journal
00323861 → ACNP
Volume
41
Issue
8
Year of publication
2000
Pages
3087 - 3092
Database
ISI
SICI code
0032-3861(200004)41:8<3087:DMAATS>2.0.ZU;2-#
Abstract
Dynamic mechanical analysis (DMA) is traditionally performed on bulk sample s. However, studies of polymer blends would be enhanced if DMA could be app lied on a local scale in order to enable a new form of microthermal analysi s. Mounting a sample on a vibrating heating stage and observing the resulti ng amplitude and phase of the motion of an atomic force microscope cantilev er allows the local elastic and visco-elastic properties to be studied. It is demonstrated in this article on samples of polyethersulfone/poly (acryon itrile-co-styrene) and polystyrene/poly(methyl methacrylate) (PS/PMMA) blen ds, and PMMA, PS and polytetrafluoroethylene homopolymers. Images at a spec ific temperature and spectroscopic data as a function of temperature of (no minally) a single point were collected. Primary and secondary relaxations w ere detected; the lateral resolution is better than 100 nm. We discuss the promising and limiting aspects of this new technique. (C) 2000 Elsevier Sci ence Ltd. All rights reserved.