Evidence of glass transition in thin films of maleic anhydride derivatives: Effect of the surfactant coadsorption | Health & Environmental Research Online (HERO)

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HERO ID

665688

Reference Type

Journal Article

Title

Evidence of glass transition in thin films of maleic anhydride derivatives: Effect of the surfactant coadsorption

Author(s)

Lopez-Diaz, D; Velazquez, MM

Year

2008

Is Peer Reviewed?

Yes

Journal

European Physical Journal E. Soft Matter and Biological Physics
ISSN: 1292-8941
EISSN: 1292-895X

Volume

Issue

Page Numbers

417-425

Language

English

PMID

19230213

DOI

10.1140/epje/i2008-10343-2

Web of Science Id

WOS:000259821100011

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-53349145904&doi=10.1140%2fepje%2fi2008-10343-2&partnerID=40&md5=91a9c2fd517cbba50f5a634408d22ed4
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Abstract

The glass transition temperature of poly (maleic anhydride-alt-1-octadecen) and poly (styrenecomaleic anhydride) cumene-terminated thin films has been measured by mechanical relaxation of Langmuir films of these polymers. The dynamical properties show glass-like features (non-Arrhenius relaxation times and non-Debye mechanical response) interpreted by the coupling model. The glass transition temperature values determined by a mechanical relaxation experiment (step-compression) agree very well with those obtained by surface potential measurements. It is found that the glass transition temperature values in thin films decrease by about 100 K as compared with those corresponding to the bulk polymers. The coadsorption of the water-insoluble surfactant DODAB decreases the glass transition temperature.

Keywords

air-water-interface; dioctadecyldimethylammonium bromide monolayers; coupling model; polymer-films; sodium poly(styrenesulfonate); diblock copolymers; adsorption films; polyelectrolyte; behavior; temperature