Ultrathin polymer films: Interfacial and annealing dependence of confinement effects

Daniele Prevosto; Kim Hung Nguyen; Massimiliano Labardi; Simone Capaccioli; Mauro Lucchesi; Pierangelo Rolla

doi:10.1063/1.4738397

Ultrathin polymer films: Interfacial and annealing dependence of confinement effects

Daniele Prevosto, Kim Hung Nguyen, Massimiliano Labardi, Simone Capaccioli, Mauro Lucchesi, Pierangelo Rolla

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Ultrathin film of poly (vinyl acetate) supported on different metallic substrates have been investigated to study confinement effects on relaxation dynamics. The characteristic frequency of structural relaxation increases on decreasing thickness when the interfacial energy is less than roughly 3 mJ/m², whereas it is thickness independent at about 3.5 mJ/m ². The growth of an interfacial polymer layer, insoluble in the commonly used solvent, has been found to grow during annealing for several days at a temperature much above the glass transition. The presence of such layer reduces the average confinement effect on the film. Such finding seems to reconcile several contradicting results previously reported.

Original language	English
Title of host publication	6th International Conference on Times of Polymers (TOP) and Composites
Pages	58-60
Number of pages	3
Edition	1
DOIs	https://doi.org/10.1063/1.4738397
Publication status	Published - 2012 Dec 1
Event	6th International Conference on Times of Polymers (TOP) and Composites - Ischia, Italy Duration: 2012 Jun 10 → 2012 Jun 14

Publication series

Name	AIP Conference Proceedings
Number	1
Volume	1459
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	6th International Conference on Times of Polymers (TOP) and Composites
Country/Territory	Italy
City	Ischia
Period	12/6/10 → 12/6/14

Keywords

adsorbed layer
interfacial properties
relaxation dynamics
ultrathin film

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4738397

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Ultrathin polymer films : Interfacial and annealing dependence of confinement effects. / Prevosto, Daniele; Nguyen, Kim Hung; Labardi, Massimiliano; Capaccioli, Simone; Lucchesi, Mauro; Rolla, Pierangelo.

6th International Conference on Times of Polymers (TOP) and Composites. 1. ed. 2012. p. 58-60 (AIP Conference Proceedings; Vol. 1459, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Prevosto, D, Nguyen, KH, Labardi, M, Capaccioli, S, Lucchesi, M & Rolla, P 2012, Ultrathin polymer films: Interfacial and annealing dependence of confinement effects. in 6th International Conference on Times of Polymers (TOP) and Composites. 1 edn, AIP Conference Proceedings, no. 1, vol. 1459, pp. 58-60, 6th International Conference on Times of Polymers (TOP) and Composites, Ischia, Italy, 12/6/10. https://doi.org/10.1063/1.4738397

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abstract = "Ultrathin film of poly (vinyl acetate) supported on different metallic substrates have been investigated to study confinement effects on relaxation dynamics. The characteristic frequency of structural relaxation increases on decreasing thickness when the interfacial energy is less than roughly 3 mJ/m2, whereas it is thickness independent at about 3.5 mJ/m 2. The growth of an interfacial polymer layer, insoluble in the commonly used solvent, has been found to grow during annealing for several days at a temperature much above the glass transition. The presence of such layer reduces the average confinement effect on the film. Such finding seems to reconcile several contradicting results previously reported.",

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Ultrathin polymer films: Interfacial and annealing dependence of confinement effects

Abstract

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Keywords

ASJC Scopus subject areas

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