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Polyelectrolyte films based on polysaccharides of different conformations : Effects on multilayer structure and mechanical properties

Title data

Schöler, Björn ; Delorme, Nicolas ; Dönch, Ingo ; Sukhorukov, Gleb B. ; Fery, Andreas ; Glinel, Karine:
Polyelectrolyte films based on polysaccharides of different conformations : Effects on multilayer structure and mechanical properties.
In: Biomacromolecules. Vol. 7 (2006) Issue 6 . - pp. 2065-2071.
ISSN 1526-4602
DOI: https://doi.org/10.1021/bm060378a

Official URL: Volltext

Abstract in another language

Ultrathin films were prepared with cationic poly(allylamine hydrochloride) (PAH) and two anionic polysaccharides, l- and lambda-carrageenan, of similar chemical composition but different conformations using the layer-by-layer (LbL)-technique. The study of aqueous solutions of carrageenans confirms that l-carrageenan is at room temperature in helical conformation while lambda-carrageenan is in random coil conformation. Characterization of the multilayers by ellipsometry, circular dichroism, and AFM revealed that l-carrageenan keeps its helical conformation within the films while lambda-carrageenan chains are in random coil conformation. Investigation of the mechanical properties of the films by performing nanoindentation experiments using force spectroscopy showed clear differences between the two films based on carrageenans of different conformations.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: No
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 09 Dec 2014 06:30
Last Modified: 11 Feb 2015 08:19
URI: https://eref.uni-bayreuth.de/id/eprint/4029