High molecular weight graft stabilisers for dispersion polymerisation of vinylidene fluoride in supercritical carbon dioxide: the effect of architecture

Tai, Hongyun; Wang, Wenxian; Howdle, Steven M.

doi:10.1016/j.polymer.2005.09.028

Cited by 20 publications

(12 citation statements)

References 27 publications

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“…Covalent immobilization of hydrophilic species on the surfaces of PVDF membranes were in general performed by graft polymerization [11][12][13][14][15]. Wang et al [16] prepared PVDF microporous membranes with poly (ethylene glycol) grafts induced by argon plasma.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic modification of poly (vinylidene fluoride) microporous membrane

Zhang

Nguyen

Ping

2009

Journal of Membrane Science

175

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Section: Introductionmentioning

confidence: 99%

Hydrophilic modification of poly (vinylidene fluoride) microporous membrane

Zhang

Nguyen

Ping

2009

Journal of Membrane Science

175

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“…[50]). Depending on the reaction conditions dispersion polymerization of VDF in sc-CO 2 allowed a certain polymer-powder morphology control up to conversions of about 35 % by means of perfluoropolyether (PFPE)-block copolymers [63,64], and up to 80 % with ammonium carboxylate terminated PFPEs [65].…”

Section: Vdf Polymerization In Comentioning

confidence: 99%

“…Recently a partially successful dispersion polymerization of VDF in sc-CO 2 was reported on applying a poly(methyl vinyletheraltmaleic anhydride) copolymer grafted with fluorinated alcohols as steric stabilizer in concentrations of 1 -5 wt-% relative to the monomer [65,80]. However, only with very high concentrations of the monomer (10 mol L -1 ) and very low conversions (5 -14 %) it has been possible to stabilize the growing polymer particles.…”

Section: Dispersion Polymerization Of Vdf In Sc-comentioning

confidence: 99%

Polymerization of Vinylidene Difluoride in Supercritical Carbon Dioxide

Beginn

Najjar

Ellmann

et al. 2011

Chemie Ingenieur Technik

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The preparation of poly(vinylidene fluoride) in supercritical carbon dioxide is investigated with mixtures of carbon dioxide and vinylidene difluoride alone, as well as in the presence of macromolecular stabilizers my means of turbidimetry, and gravimetric measurements. The morphology of the obtained poly(vinylidene fluoride) powder, and the molecular weight distribution of the polymer was used to distinguish between homogeneous polymerization, precipitation polymerization, and dispersion polymerization due to the added macromolecular stabilizers. The effect of stabilizers and reaction conditions on the predominating locus of polymerization is discussed.

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“…Poly(methyl vinyl ether-co-maleic anhydride) (PMVE-MA or Gantrez), an alternant copolymer of methyl vinyl ether and maleic anhydride [1], has been widely used as biocompatible materials for pharmaceutical applications and oral care products. For example, Gantrez derivative salts are always used as denture adhesive [2,3].…”

Section: Introductionmentioning

confidence: 99%

Rheological behavior of PMVE-MA aqueous solution with metallic cations

Dong

et al. 2010

Front. Chem. Sci. Eng.

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The rheological properties of aqueous solutions of poly(methyl vinyl ether-co-maleic anhydride) (PMVE-MA) upon addition of metallic cations at different pH values were investigated. Sol-gel transition and shearthickening phenomena at moderate shear rate were observed upon increasing the amount of metallic cations, especially for cupric cation. At certain molar ratio (f gel ) of added cupric cations to carboxyl groups in PMVE-MA, the system became gel-like, and the storage modulus (G′) and loss modulus (G′′) were parallel and exhibited a power-law dependence on the frequency, which is consistent with Winter's hypothesis of determining the gel point of a crosslinking system. The shear-thickening behavior depends on f gel , pH, metallic valence, and temperature.

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High molecular weight graft stabilisers for dispersion polymerisation of vinylidene fluoride in supercritical carbon dioxide: the effect of architecture

Cited by 20 publications

References 27 publications

Hydrophilic modification of poly (vinylidene fluoride) microporous membrane

Hydrophilic modification of poly (vinylidene fluoride) microporous membrane

Polymerization of Vinylidene Difluoride in Supercritical Carbon Dioxide

Rheological behavior of PMVE-MA aqueous solution with metallic cations

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