HAIRY, SEMI-SHAVED, AND FULLY SHAVED HOLLOW NANOSPHERES FROM POLYISOPRENE BLOCK POLY(2-CINNAMOYLETHYL METHACRYLATE)

Authors
Citation
Jf. Ding et Gj. Liu, HAIRY, SEMI-SHAVED, AND FULLY SHAVED HOLLOW NANOSPHERES FROM POLYISOPRENE BLOCK POLY(2-CINNAMOYLETHYL METHACRYLATE), Chemistry of materials, 10(2), 1998, pp. 537-542
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
ISSN journal
0897-4756
Volume
10
Issue
2
Year of publication
1998
Pages
537 - 542
Database
ISI
SICI code
0897-4756(1998)10:2<537:HSAFSH>2.0.ZU;2-J
Abstract
A polyisoprene-bloch-poly(2-cinnamoylethyl methacrylate) (PI-b-PCEMA) sample formed vesicles in THF/hexanes with a THF volume fraction of 20 %. In such vesicles, PCEMA made up the essentially-solvent-free spheri cal shell and the PI chains stretched into the solution phase from bot h the inner and outer PCEMA surfaces. Hairy hollow nanospheres were pr epared by photo-cross-linking the PCEMA shell. Treating the cross-link ed vesicles with ozone for a short period selectively degraded the out er PI chains to yield semi-shaved hollow nanospheres. Fully shaved hol low nanospheres were prepared by degrading both the inner and outer PI chains using long ozonolysis times. Due to the poor solubility of the fully shaved hollow nanospheres in common organic solvents, they may be useful as macroporous resins in chemical separations.