Number of the records: 1
Diffusive Mixing of Polymers Investigated by Raman Microspectroscopy and Microrheology
- 1.
SYSNO ASEP 0350942 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Diffusive Mixing of Polymers Investigated by Raman Microspectroscopy and Microrheology Author(s) Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
De Luca, A.C. (IT)
Pesce, G. (IL)
Rusciano, G. (IT)
Sasso, A. (IT)
Caserta, S. (IT)
Guido, S. (IT)
Marrucci, G. (IT)Number of authors 8 Source Title Langmuir. - : American Chemical Society - ISSN 0743-7463
Roč. 26, č. 17 (2010), s. 14223-14230Number of pages 8 s. Language eng - English Country US - United States Keywords mutual diffusion ; interfacial-tension ; immiscible polymers ; blends Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering CEZ AV0Z20650511 - UPT-D (2005-2011) UT WOS 000281354000070 EID SCOPUS 77957945750 DOI 10.1021/la101498h Annotation Diffusive mixing in a model polymer blend of limited miscibility (i.e., the pair polydimethylsiloxane/polyisobutene) is investigated. The diffusion process is followed in the actual droplet-based microstructure of the polymer blend, as opposed to the ideal planar geometry used in previous studies (Brochard et al. Macromolecules 1983, /6, 1638; Composto et al. Nature 1987, 328, 234). In our experiments we combine Raman microspectroscopy and video particletracking microrheology. The first technique allows us to monitor local concentration of the two polymers with high spatial resolution both inside and outside a micrometer-size droplet of the dispersed phase. In addition, microrheology enables to follow how the local viscosity inside the droplet changes during the diffusion. The polymer viscosity inside the droplet is determined by video tracking the Brownian motion of a polystyrene bead microinjected into the droplet. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2011
Number of the records: 1