Synthesis and characterization of poly(methylphenylsilylene)- poly(methyl methacrylate) block copolymers

Lutsen, Laurence; Jones, Richard G.

doi:10.1002/(sici)1097-0126(199805)46:1<3::aid-pi915>3.0.co;2-x

Cited by 10 publications

(5 citation statements)

References 3 publications

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“…An alternative procedure was the coupling of poly(styryllithium) to SiOCl end groups of poly(methylphenylsilane) (PMPS), but this led to mixtures of AB and ABA block copolymers. [37][38][39][40] Using a similar methodology, we have demonstrated the coupling of ␣,dihalo-PMPS with polyisoprene dianions and with hydroxy-terminated poly(ethylene oxide) to give multiblock copolymers. 41 The latter was subsequently demonstrated to self-assemble in different solvents to give vesicles, micellar fibers, and superhelices.…”

Section: Introductionmentioning

confidence: 99%

“…However, in both cases, the synthesis of the monomers from which the polysilanes were formed could be difficult and time‐consuming. An alternative procedure was the coupling of poly(styryllithium) to SiCl end groups of poly(methylphenylsilane) (PMPS), but this led to mixtures of AB and ABA block copolymers 37–40. Using a similar methodology, we have demonstrated the coupling of α,ω‐dihalo‐PMPS with polyisoprene dianions and with hydroxy‐terminated poly(ethylene oxide) to give multiblock copolymers 41.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of poly(methyl methacrylate)‐block‐poly(methylphenylsilane)‐block‐poly(methyl methacrylate) by atom transfer radical polymerization

Rossi

Jones

Holder

2002

J. Polym. Sci. A Polym. Chem.

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ABA block copolymers of methyl methacrylate and methylphenylsilane were synthesized with a methodology based on atom transfer radical polymerization (ATRP). The reaction of samples of ␣,-dihalopoly(methylphenylsilane) with 2-hydroxyethyl-2-methyl-2-bromoproprionate gave suitable macroinitiators for the ATRP of methyl methacrylate. The latter procedure was carried out at 95°C in a xylene solution with CuBr and 2,2-bipyridine as the initiating system. The rate of the polymerization was first-order with respect to monomer conversion. The block copolymers were characterized with 1 H NMR and 13 C NMR spectroscopy and size exclusion chromatography, and differential scanning calorimetry was used to obtain preliminary evidence of phase separation in the copolymer products.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(methyl methacrylate)‐block‐poly(methylphenylsilane)‐block‐poly(methyl methacrylate) by atom transfer radical polymerization

Rossi

Jones

Holder

2002

J. Polym. Sci. A Polym. Chem.

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“…polystyryl lithium) with Si-X (X = Br, Cl) chain ends of α,ω-dihalo-polymethylphenylsilane [28] an example of which is shown in Figure 2 [29,30]. Similar strategies were subsequently used to prepare an AB/ABA copolymer mixture in which the A block was poly(methyl methacrylate) (PMMA) [31] and also a multi-block copolymer of PMPS and polyisoprene (PI) [32].…”

Section: Polymer Coupling Reactionsmentioning

confidence: 99%

The Synthesis, Self-Assembly and Self-Organisation of Polysilane Block Copolymers

Holder

Jones

2008

Silicon Based Polymers

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“…The incorporation of silylene chains within block copolymers might overcome such a detractive feature, and a number have been reported. [16][17][18][19][20] Recently, an amphiphilic multiblock copolymer of poly(methylphenylsilylene), PMPS, and poly-(ethylene oxide), PEO, has been shown to form supramolecular structures. 21 Vesicles form in aqueous dispersion while within 75% water/25% tetrahydrofuran, THF, fibers have been characterized.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, poly(methylphenylsilylene) is a brittle polymer, a property that can readily be attributed to the polymer chain being comprised predominantly of all-trans sequences such that it is best described as having a wormlike structure in both solution and the solid state. The incorporation of silylene chains within block copolymers might overcome such a detractive feature, and a number have been reported. − Recently, an amphiphilic multiblock copolymer of poly(methylphenylsilylene), PMPS, and poly(ethylene oxide), PEO, has been shown to form supramolecular structures . Vesicles form in aqueous dispersion while within 75% water/25% tetrahydrofuran, THF, fibers have been characterized.…”

Section: Introductionmentioning

confidence: 99%

Surface Viscoelastic Properties of Spread Films of a Polysilylene−Poly(ethylene oxide) Multiblock Copolymer at the Air−Water Interface

et al. 2000

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The viscoelastic properties of a spread layer of a poly(ethylene oxide)-co-poly(methylphenylsilylene) alternating block copolymer at the air-water interface have been obtained by surface quasielastic light scattering over a range of surface concentrations at a fixed capillary wavenumber and as a function of wavenumber for two surface concentrations. The frequency and the damping for a fixed capillary wavenumber showed a maximum at a surface concentration of 0.8 mg m -2 , where resonance between the capillary and dilational waves of the surface film occurs. The surface viscoelastic parameters, i.e., surface tension, dilational modulus, and dilational viscosity, were obtained from the heterodyne correlation functions of the scattered light by direct spectral fitting. The surface tension obtained from light scattering data showed the same qualitative dependence on surface concentration as that from the surface pressure data; however, the light scattering values were somewhat larger, indicating the presence of relaxation processes. Attempts to determine the nature of the relaxation process were made by obtaining the surface viscoelastic parameters as a function of surface wavenumber at the surface concentration where resonance between the surface modes is evident. However, the frequency dependence of the surface moduli followed none of the expectations for simple models of the relaxation process. Close analysis of the capillary wave frequency and damping as a function of surface wavenumber indicated that capillary and dilational modes were mixed at the resonance condition. The possibility of a splay mode of aggregated silylene blocks contributing to surface wave dynamics has been discussed.

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Synthesis and characterization of poly(methylphenylsilylene)- poly(methyl methacrylate) block copolymers

Cited by 10 publications

References 3 publications

Synthesis and characterization of poly(methyl methacrylate)‐block‐poly(methylphenylsilane)‐block‐poly(methyl methacrylate) by atom transfer radical polymerization

Synthesis and characterization of poly(methyl methacrylate)‐block‐poly(methylphenylsilane)‐block‐poly(methyl methacrylate) by atom transfer radical polymerization

The Synthesis, Self-Assembly and Self-Organisation of Polysilane Block Copolymers

Surface Viscoelastic Properties of Spread Films of a Polysilylene−Poly(ethylene oxide) Multiblock Copolymer at the Air−Water Interface

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