Synthesis and characterization of poly(ethylene oxide) and poly(perfluorohexylethyl methacrylate) containing triblock copolymers

Hussain, Hidayat; Budde, H.; Höring, S.; Busse, Karsten; Kreßler, Jörg

doi:10.1002/1521-3935(200210)203:14<2103::aid-macp2103>3.0.co;2-x

Cited by 48 publications

(47 citation statements)

References 33 publications

(48 reference statements)

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“…[26] Briefly, PEO macroinitiator was obtained from PEO di-ol or mono-ol of different molar masses and 2-bromopropionyl bromide in dry tetrahydrofuran (THF). The product was isolated by evaporating the solvent on a rotary evaporator, filtering the residue, and precipitated in hexane.…”

Section: Synthesis Of Block Copolymersmentioning

confidence: 99%

Poly(ethylene oxide)‐ and Poly(perfluorohexylethyl methacrylate)‐Containing Amphiphilic Block Copolymers: Association Properties in Aqueous Solution

Hussain

Busse

Kreßler

2003

Macro Chemistry & Physics

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Amphiphilic di‐ and triblock copolymers containing poly(ethylene oxide) (PEO) as the hydrophilic block and poly(perfluorohexylethyl methacrylate) (PFMA) as the hydrophobic block were synthesized by atom‐transfer radical polymerization using hydroxy‐terminated PEO as the macroinitiator. The copolymers were characterized by size exclusion chromatography and 1H NMR spectroscopy. Self‐association in aqueous solution has been investigated using surface tension measurements, dynamic light scattering (DLS), and transmission electron microscopy (TEM). From surface tension measurements in water, a characteristic concentration (c*) can be detected, which is interpreted as the critical micelle concentration (cmc). The cmc decreases with an increase in fluoro content in the triblock copolymer up to 11 wt.‐% PFMA (solubility limit). DLS studies have been carried out for different samples above the cmc, showing small aggregates (micelles) and single chains for diblock copolymer solutions. In the case of triblock copolymers large clusters were the dominant aggregates in addition to the micelles and single chains. The effect of temperature and concentration on the micelle and cluster formation has been investigated by DLS. Micelle size was found to be resistant to any change by temperature, however, a slight but significant increase in apparent hydrodynamic radius was observed with an increase in concentration, while both temperature and concentration affected the formation of large clusters, especially in concentrated solutions. TEM has been carried out to visualize the morphology of the aggregates after transferring the solution to carbon film. The initial concentration for the preparation of TEM samples was found to have a strong influence on the morphology of the aggregates. By adding colloidal gold particles to the solutions, the typical covering by the polymer was observed by TEM.Decay‐rate distributions for PEO10F5 (4.0 g · L−1); obtained from the time correlation functions.magnified imageDecay‐rate distributions for PEO10F5 (4.0 g · L−1); obtained from the time correlation functions.

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Section: Synthesis Of Block Copolymersmentioning

confidence: 99%

Poly(ethylene oxide)‐ and Poly(perfluorohexylethyl methacrylate)‐Containing Amphiphilic Block Copolymers: Association Properties in Aqueous Solution

Hussain

Busse

Kreßler

2003

Macro Chemistry & Physics

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“…Recently, controlled-radical polymerization, such as atom-transfer radical polymerization (ATRP), nitroxide-mediated radical polymerization (NMP), and reversible additionfragmentation chain transfer (RAFT) polymerization, has been widely developed and applied to perfluoroalkylated block copolymer synthesis, as shown in Figure 23.1 (Zhang et al, 1999;Lim et al, 2002;Hussain et al, 2002;Li et al, 2002a;Andruzzi et al, 2002;Gopalan et al, 2002;Radhakrishnan et al, 2004;Hikita et al, 2004;Shemper and Mathias, 2004;Jankova and Hvilsted, 2005;Galli et al, 2005). Styrene and (meth)acrylate monomers containing perfluoroalkyl groups are used as second monomers in sequential polymerization.…”

Section: Living/controlled-radical Polymerizationmentioning

confidence: 99%

Fluorine‐Containing Block Copolymers: Synthesis and Application as a Template for Nanocellular and Porous Structures Using Supercritical Carbon Dioxide

Yokoyama

Sugiyama

2011

Complex Macromolecular Architectures

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“…2b) [30]). The block copolymers are named PFMA-b-PEO-b-PFMA where PFMA stands for poly(perfluorohexylethyl methacrylate) [31]. These block copolymers have a high surface activity at the airwater interface and a strong tendency for self-aggregation in water [32,33].…”

Section: New Block Copolymersmentioning

confidence: 99%

Novel non-ionic block copolymers tailored for interactions with phospholipids

Amado¹,

Blume²,

Kreßler³

2009

Reactive and Functional Polymers

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Synthesis and characterization of poly(ethylene oxide) and poly(perfluorohexylethyl methacrylate) containing triblock copolymers

Cited by 48 publications

References 33 publications

Poly(ethylene oxide)‐ and Poly(perfluorohexylethyl methacrylate)‐Containing Amphiphilic Block Copolymers: Association Properties in Aqueous Solution

Poly(ethylene oxide)‐ and Poly(perfluorohexylethyl methacrylate)‐Containing Amphiphilic Block Copolymers: Association Properties in Aqueous Solution

Fluorine‐Containing Block Copolymers: Synthesis and Application as a Template for Nanocellular and Porous Structures Using Supercritical Carbon Dioxide

Novel non-ionic block copolymers tailored for interactions with phospholipids

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