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Thermo-reversible formation of wormlike micelles with a microphase-separated corona from a semicrystalline triblock terpolymer

Title data

Schmalz, Holger ; Schmelz, Joachim ; Drechsler, Markus ; Yuan, Jiayin ; Walther, Andreas ; Schweimer, Kristian ; Mihut, Adriana M.:
Thermo-reversible formation of wormlike micelles with a microphase-separated corona from a semicrystalline triblock terpolymer.
In: Macromolecules. Vol. 41 (13 May 2008) Issue 9 . - pp. 3235-3242.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma702417y

Abstract in another language

The thermo-reversible formation of wormlike micelles from a polystyrene-block-polyethylene-block-poly(methyl methacrylate) (PS-b-PE-b-PMMA) triblock terpolymer with a crystallizable middle block in organic media is presented. The formation of wormlike micelles is rather unexpected, because PE containing diblock copolymers usually form platelet-like structures. Transmission electron microscopy (TEM) investigations revealed a core-corona structure for the wormlike micelles. The core is formed by crystalline PE domains, and the soluble corona exhibits a patched structure composed of microphase-separated PS and PMMA chains. Microphase separation of the coronal chains was proven by 2D H-1 nuclear Overhauser effect spectroscopy (NOESY) and TEM investigations of selectively stained samples. A combination of various techniques, such as differential scanning calorimetry (DSC), dynamic light scattering (DLS), and scanning force microscopy (SFM), indicated that the wormlike micelles might be formed by crystallization-induced aggregation of spherical micelles upon cooling. The presented approach opens an alternative way to produce anisotropic polymer nanostructures with a microphase-separated corona.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: BLOCK-COPOLYMER MICELLES; ORGANOMETALLIC POLYMER CHEMISTRY; DIBLOCK COPOLYMERS; DILUTE-SOLUTION; MULTIPLE MORPHOLOGIES; CYLINDRICAL MICELLES; POLY(ETHYLENE OXIDE); POLYFERROCENE-BLOCK; SELECTIVE SOLVENT; JANUS MICELLES
Institutions of the University: Faculties
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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biopolymers
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Biopolymers - Univ.-Prof. Dr. Paul Rösch
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biopolymers > Lehrstuhl Biopolymere - Apl. Prof. Dr. Birgitta Wöhrl
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Polymer and Colloid Science
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
500 Science > 570 Life sciences, biology
Date Deposited: 15 Apr 2015 06:53
Last Modified: 12 Jun 2019 08:22
URI: https://eref.uni-bayreuth.de/id/eprint/10090