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Facile Access to Hydroxy-Functional Core-Shell Microspheres via Grafting of Ethylene Oxide by Anionic Ring-Opening Polymerization

Title data

Joso, Raymond ; Reinicke, Stefan ; Walther, Andreas ; Schmalz, Holger ; Müller, Axel H. E. ; Barner, Leonie:
Facile Access to Hydroxy-Functional Core-Shell Microspheres via Grafting of Ethylene Oxide by Anionic Ring-Opening Polymerization.
In: Macromolecular Rapid Communications. Vol. 30 (17 June 2009) Issue 12 . - pp. 1009-1014.
ISSN 1521-3927
DOI: https://doi.org/10.1002/marc.200900031

Official URL: Volltext

Project information

Project financing: Australian Research Council, Grant Number LX0560296

Abstract in another language

We present a facile access route to hydroxy-functional narrow disperse microspheres of well-defined grafting density (GD). Ethylene oxide has been grafted from highly crosslinked poly(divinyl benzene) microspheres by anionic ring-opening polymerization using sec-butyllithium as activator together with the phosphazene base t-BuP(4). Initially, core microspheres have been prepared by precipitation polymerization utilizing divinyl benzene (DVB, 80 wt.-%). The grafting of poly(ethylene oxide) (PEO) from the surface resulted in the formation of functional core-shell microspheres with hydroxy-terminal end groups. The number average particle diameter of the grafted microspheres was 3.6 mu m and the particle weight increased by 5.7%. The microspheres were characterized by SEM, FT-IR spectroscopy, elemental analysis, and fluorescence microscopy. The surface GD (determined via two methods) was 1.65 +/- 0.06 and 2.09 +/- 0.08 chains.nm(-2), respectively.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: anionic polymerization; core-shell polymers; polymer grafting; ring-opening polymerization
Institutions of the University: 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
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 15 Apr 2015 06:08
Last Modified: 15 Apr 2015 06:08
URI: https://eref.uni-bayreuth.de/id/eprint/10081