Thermal, Mechanical, and Surface Properties of Poly(2-N-alkyl-2-oxazoline)s

• Published in: Macromolecular chemistry and physics Vol. 211; no. 22; pp. 2443 - 2448
• Main Authors: Rettler, Erik F.-J., Kranenburg, Johannes M., Lambermont-Thijs, Hanneke M.L., Hoogenboom, Richard, Schubert, Ulrich S.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 15-11-2010; WILEY‐VCH Verlag; Wiley
• Subjects: Applied sciences; Carbon; Cationic; Crystal structure; Exact sciences and technology; indentation; Mechanical properties; Modulus of elasticity; Molecular structure; Monomers; Organic polymers; Physicochemistry of polymers; poly(2-oxazoline)s; Polymers; Properties and characterization; surface energies; Surface properties; thermal properties; Substituent effect; Ethyleneimine derivative polymer; Elastic modulus; Mechanical properties; surtace energies; Experimental study; Glass transition temperature; indentation; poly(2-oxazoline)s; thermal properties; Surface properties; Melting point; Surface energy
• ISSN: 1022-1352; 1521-3935; 1521-3935
• DOI: 10.1002/macp.201000338

Thermal, mechanical, and surface properties of a library of poly(2‐oxazoline)s are investigated. These polymers are suitable to study structure/property relationships as their cationic ROP and the relative facile monomer synthesis allow for control over the molecular structure. The number of carbon atoms in the linear side‐chain is systematically varied from methyl to nonyl. Relations between chemical structures, thermal transitions, surface energies, and elastic moduli are discussed. It is shown that the mechanical and thermal properties of the polymers depend on the presence of a crystalline phase in the material. The amorphous polymers reveal a decrease in the reduced moduli along with a decrease in their respective glass transition temperature with increasing length of the side‐chain.
The mechanical, thermal, and surface properties of a library of poly(2‐alkyloxazoline)s with varying length of the linear side‐chain are investigated. The properties of the materials are influenced by the length of the side‐chain, as well as by the presence of a crystalline phase.