Synthesis and characterization of poly(methyl methacrylate)-g-poly(dimethylsiloxane)copolymers. I. Bulk and surface characterization

Smith, Suzanne; DeSimone, Joseph M.; Huang, Haiying; York, G. A.; Dwight, D. W.; Wilkes, Garth L.; McGrath, James E.

doi:10.1021/ma00036a002

Cited by 106 publications

(81 citation statements)

References 4 publications

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“…In that publication, the theoretical work of Fredrickson et al [25,26] was also referenced, which predicts that random length block copolymer materials, such as often produced by step-growth polymerization, will lack long-range order due to a broader distribution of the segment lengths. However, some possible exceptions to his analysis have been reported [27][28][29][30].…”

Section: Small Angle X-ray Scatteringmentioning

confidence: 83%

A comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs

Sheth

Ünal

Yılgör

et al. 2005

Polymer

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Section: Small Angle X-ray Scatteringmentioning

confidence: 83%

A comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs

Sheth

Ünal

Yılgör

et al. 2005

Polymer

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“…8,9 This leads to good molecular weight control, but back-biting can become problematic at high monomer conversions. [10][11][12][13] Controlled-structure PDMS-based materials have various applications in polymer and colloid science. 2, 14 For example, monomethacrylate-capped PDMS macromonomers have been utilized as reactive steric stabilizers for the preparation of PDMS-stabilized latexes in supercritical CO 2 15,16 .…”

Section: Introductionmentioning

confidence: 99%

Polydimethylsiloxane-Based Diblock Copolymer Nano-objects Prepared in Nonpolar Media via RAFT-Mediated Polymerization-Induced Self-Assembly

et al. 2015

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and relatively low final polydispersities (M w /M n = 1.14 -1.34). Small-angle X-ray scattering (SAXS) has been used to characterize selected examples of the spherical nanoparticles in order to obtain volume-average diameters, which increase monotonically when targeting longer DPs for the coreforming PBzMA block. A relatively high copolymer concentration (> 25 % w/v) is required to obtain a pure worm phase, which occupies an extremely narrow region within the phase diagram. Selected worm and vesicle dispersions were also analyzed by SAXS, which enables determination of the mean worm cross-section, mean worm length and vesicle membrane thickness, respectively. In addition, the highly anisotropic worms formed free-standing gels in n-heptane, with rheology measurements indicating viscoelastic behavior and a gel storage modulus of around 10 4 Pa.

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“…[1][2][3][4][5][6][7][8] Since carbon dioxide is a non-solvent for most monomers, elevated pressure is needed to increase the solubility of monomer in CO 2 . In the early stage of polymerization, the oligomers synthesized from the monomers might be dissolved in carbon dioxide at moderate pressures.…”

Section: Introductionmentioning

confidence: 99%

GMA-functionalized reactive stabilizer for polymerization of methyl methacrylate in supercritical CO2: effect of stabilizer, initiator and monomer concentrations

2008

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Glycidyl methacrylate linked poly(dimethylsiloxane) (GMA-PDMS) was synthesized and used as a stabilizer for the dispersion polymerization of methyl methacrylate (MMA) in supercritical CO 2 . This study examined the effect of the concentrations of the stabilizer, 2,2'-azobisisobutyronitrile (AIBN) initiator, and MMA on the yield, molecular weight, and morphology of the poly(methyl methacrylate) (PMMA) product. PMMA was obtained in 94.6% yield using only 0.87 wt% GMA-PDMS. When the AIBN concentration was increased from 0.25 to 1.06 wt%, the molecular weight and particle size of the PMMA decreased from 56,600 to 21,600 and from 4.1 to 2.7 µm, whereas the particle size distribution increased from 1.3 to 1.9. The M n of the PMMA product ranged from 41,600 and 55,800 under typical polymerization conditions. The PMMA particle diameter ranged from 1.8 to 11.0 µm and the particle size distribution ranged from 1.4 to 1.8.

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Synthesis and characterization of poly(methyl methacrylate)-g-poly(dimethylsiloxane)copolymers. I. Bulk and surface characterization

Cited by 106 publications

References 4 publications

A comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs

A comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs

Polydimethylsiloxane-Based Diblock Copolymer Nano-objects Prepared in Nonpolar Media via RAFT-Mediated Polymerization-Induced Self-Assembly

GMA-functionalized reactive stabilizer for polymerization of methyl methacrylate in supercritical CO2: effect of stabilizer, initiator and monomer concentrations

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