Facile access to hydroxy-functional core-shell microspheres via grafting of ethylene oxide by anionic ring-opening polymerization

Joso, Raymond, Reinicke, Stefan, Walther, Andreas, Schmalz, Holger, Mueller, Axel H.E., & Barner, Leonie (2009) Facile access to hydroxy-functional core-shell microspheres via grafting of ethylene oxide by anionic ring-opening polymerization. Macromolecular Rapid Communications, 30(12), pp. 1009-1014.

View at publisher

Abstract

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-BuP4. 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.

Impact and interest:

15 citations in Scopus
Search Google Scholar™
16 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

ID Code: 97489
Item Type: Journal Article
Refereed: Yes
Keywords: anionic polymerization; core-shell polymers; polymer grafting; ring-opening polymerization
DOI: 10.1002/marc.200900031
ISSN: 1022-1336
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 28 Jul 2016 22:50
Last Modified: 05 Aug 2016 01:25

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page