Dominant factors on the micellization of BnEmBn-type triblock copolymers in aqueous solution
Article Abstract:
A study was performed to examine the micellization behaviors of the oxyethylene/oxybutylene (BnEmBn) triblock copolymers in aqueous solution and the effect of the dominant factors, block lengths and length ratios, on micellization. The micellar parameters were determined by fixing the length of the solvent-phobic block and elongating the solvent-philic block. Results revealed that the increase in B block length of BnEmBn type of triblock polymers increased the temperature of the solution that enhanced the hydrophobicity of polymer chains.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Fusion of charged block copolymer micelles into toroid networks
Article Abstract:
Poly(ethylene-b-sulfonic acid), a directly water-soluble polyelectrolyte block copolymer with a large hydrophobic block, was investigated to examine its complex association behavior in aqueous solution as a function of polymer and salt concentration. The polyelectrolyte block copolymer was found to form spherical micelles that fuse into vesicles amd fractal toroid-micronetworks with increasing polymer and salt concentration. The network structure was characterized with a combination of scattering and microscopic techniques.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Effect of anesthetic molecules (halothane and isoflurane) on the aggregation behavior of POE-POP-POE triblock copolymers
Article Abstract:
The effects of the anesthetic molecules, halothane and isoflurane, on the aggregation behavior of the POE-POP-POE triblock copolymers: F88, P84 and P104 are studied using fluorescence spectroscopy and light-scattering methods. Results show that small amounts of halothane and isoflurane improve the dehydration of Pluronic surfactants and promote the micelle formation. Anesthetic molecules also distribute in the core and micelles created by Pluronic surfactants.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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