Water uptake of poly(2-N-alkyl-2-oxazoline)s: influence of crystallinity and hydrogen-bonding on the mechanical properties

Poly(2-oxazoline)s are suitable materials to study structure-property relationships as their preparation by a living cationic ring-opening polymerization procedure and the relatively facile monomer synthesis allow accurate control over the molecular structure. In this contribution, the number of car...

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Bibliographic Details
Published inJournal of materials chemistry Vol. 21; no. 43; pp. 17331 - 17337
Main Authors Rettler, Erik F.-J., Lambermont-Thijs, Hanneke M. L., Kranenburg, Johannes M., Hoogenboom, Richard, Unger, Miriam V., Siesler, Heinz W., Schubert, Ulrich S.
Format Journal Article
LanguageEnglish
Published 01.01.2011
Subjects
Carbon
Cationic
Crystal structure
Crystallinity
Indentation
Mechanical properties
Monomers
Uptakes
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Summary:Poly(2-oxazoline)s are suitable materials to study structure-property relationships as their preparation by a living cationic ring-opening polymerization procedure and the relatively facile monomer synthesis allow accurate control over the molecular structure. In this contribution, the number of carbon atoms in the linear side-chain is systematically varied from a short methyl- to a long nonyl-group. As some of the materials are known to be hygroscopic, the effect of water uptake on the mechanical properties is investigated in detail. The combination of water uptake measurements, FT-IR spectroscopy and indentation revealed that only the samples with very short side-chains show significant hygroscopicity, while samples with longer side-chains exhibit crystalline behavior. Furthermore, depending on the polymer structure, it could be differentiated between side-chain and main-chain crystallinity.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0959-9428
1364-5501
DOI:10.1039/c1jm12541a