Polymers 2013, 5(3), 1081-1101; doi:10.3390/polym5031081
Article

Synthesis and Solution Properties of Double Hydrophilic Poly(ethylene oxide)-block-poly(2-ethyl-2-oxazoline) (PEO-b-PEtOx) Star Block Copolymers

1 Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, Jena 07743, Germany 2 Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena 07743, Germany 3 Dutch Polymer Institute, P.O. Box 902, Eindhoven 5600 AX, The Netherlands
* Author to whom correspondence should be addressed.
Received: 28 June 2013; in revised form: 27 July 2013 / Accepted: 19 August 2013 / Published: 2 September 2013
(This article belongs to the Special Issue Non-Equilibrium Blockcopolymer Self-Assembly)
PDF Full-text Download PDF Full-Text [2122 KB, Updated Version, uploaded 3 September 2013 17:20 CEST]
The original version is still available [2122 KB, uploaded 2 September 2013 10:56 CEST]
Abstract: We demonstrate the synthesis of star-shaped poly(ethylene oxide)-block-poly(2-ethyl-2-oxazoline) [PEOm-b-PEtOxn]x block copolymers with eight arms using two different approaches, either the “arm-first” or the “core-first” strategy. Different lengths of the outer PEtOx blocks ranging from 16 to 75 repeating units were used, and the obtained materials [PEO28-b-PEtOxx]8 were characterized via size exclusion chromatography (SEC), nuclear magnetic resonance spectroscopy (NMR), and Fourier-transform infrared spectroscopy (FT-IR) measurements. First investigations regarding the solution behavior in water as a non-selective solvent revealed significant differences. Whereas materials synthesized via the “core-first” method seemed to be well soluble (unimers), aggregation occurred in the case of materials synthesized by the “arm-first” method using copper-catalyzed azide-alkyne click chemistry.
Keywords: poly(2-ethyl-2-oxazoline); star-shaped block copolymers; double hydrophilic block copolymers

Supplementary Files

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Rudolph, T.; Crotty, S.; von der Lühe, M.; Pretzel, D.; Schubert, U.S.; Schacher, F.H. Synthesis and Solution Properties of Double Hydrophilic Poly(ethylene oxide)-block-poly(2-ethyl-2-oxazoline) (PEO-b-PEtOx) Star Block Copolymers. Polymers 2013, 5, 1081-1101.

AMA Style

Rudolph T, Crotty S, von der Lühe M, Pretzel D, Schubert US, Schacher FH. Synthesis and Solution Properties of Double Hydrophilic Poly(ethylene oxide)-block-poly(2-ethyl-2-oxazoline) (PEO-b-PEtOx) Star Block Copolymers. Polymers. 2013; 5(3):1081-1101.

Chicago/Turabian Style

Rudolph, Tobias; Crotty, Sarah; von der Lühe, Moritz; Pretzel, David; Schubert, Ulrich S.; Schacher, Felix H. 2013. "Synthesis and Solution Properties of Double Hydrophilic Poly(ethylene oxide)-block-poly(2-ethyl-2-oxazoline) (PEO-b-PEtOx) Star Block Copolymers." Polymers 5, no. 3: 1081-1101.

Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert