Format:
Online-Ressource
ISSN:
1521-3927
Content:
Abstract: The existence of micelles of polystyrene‐block‐poly (ethylene/propene) in solutions of polystyrene in toluene was investigated. Toluene is a good solvent of both copolymer blocks whereas polystyrene and poly (ethylene/propene) are immiscible polymers. The presence of homopolystyrene at high enough concentration can induce the micellization of polystyrene‐block‐poly (ethylene/propene) in solution of a good solvent such as toluene. The thermodynamics of this new micelle system at a given polystyrene concentration was studied. Light scattering measurements were carried out in order to determine the critical micelle temperature (CMT) of different micellar solutions. Standard Gibbs energy, enthalpy and entropy of micellization were estimated from CMT and concentration data. The numerical values found were less negative than those found for micelle systems consisting in a block copolymer dissolved in a single selective solvent.
In:
volume:16
In:
number:8
In:
year:2003
In:
pages:607-612
In:
extent:6
In:
Macromolecular rapid communications, Weinheim : Wiley-VCH, 1980-, 16, Heft 8 (2003), 607-612 (gesamt 6), 1521-3927
Language:
English
DOI:
10.1002/marc.1995.030160810
URN:
urn:nbn:de:101:1-2023112004220128279776
URL:
https://doi.org/10.1002/marc.1995.030160810
URL:
https://nbn-resolving.org/urn:nbn:de:101:1-2023112004220128279776
URL:
https://d-nb.info/1310436827/34
URL:
https://doi.org/10.1002/marc.1995.030160810