Directly resolved core-corona structure of block copolymer micelles by cryo-transmission electron microscopy

Authors
Zheng, Y Won, YY Bates, FS Davis, HT Scriven, LE Talmon, Y
Citation
Y. Zheng et al., Directly resolved core-corona structure of block copolymer micelles by cryo-transmission electron microscopy, J PHYS CH B, 103(47), 1999, pp. 10331-10334
Citations number
30
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
103
Issue
47
Year of publication
1999
Pages
10331 - 10334
Database
ISI
SICI code
1520-6106(19991125)103:47<10331:DRCSOB>2.0.ZU;2-H
Abstract
Core-corona structures of poly(ethyleneoxide)/polybutadiene (PEO/PB) block copolymer micelles are directly resolved for the first time by examining ra pidly vitrified samples by transmission electron microscopy at liquid nitro gen temperature (Cryo-TEM). Spherical micelles form at higher PEO/PB block volume ratio; cylindrical form at lower block volume ratio. Images of both shapes of micelles show a dense core and a diffuse corona. The core and cor ona sizes agree well with theoretical prediction from the "star" model of p olymer micelles.