Polyethylene Functionalized with Precisely Spaced Phosphonic Acid Groups

Opper, Kathleen L.; Fassbender, Birgit; Brunklaus, Gunther; Spiess, Hans Wolfgang; Wagener, Kenneth B.

doi:10.1021/ma900884f

Cited by 58 publications

(62 citation statements)

References 23 publications

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“…Diethyl ether (99.9%), toluene (technical) and H 2 SO 4 (95%) were obtained from BDH Prolabo (VWR, Germany). The crosslinker (CL) [19] , exo,endo-5-norbornene-2-ylphosphonic acid (NPA) [27,28] and the 3 rd -generation Grubbs-initiator RuCl 2 (Py) 2 (IMesH 2 )(CHPh) [29] were prepared acc. to the literature.…”

Section: Experimental Partmentioning

confidence: 99%

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Weichelt

Frerich

Lenz

et al. 2010

Macromol. Rapid Commun.

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Porous monolithic materials have been prepared via ring-opening metathesis polymerization from norborn-2-ene and a 7-oxanorborn-2-ene-based cross-linker in the presence of porogenic solvents (i.e., 2-propanol and toluene) and norborn-2-enephosphonate surface-modified CaCO(3) nanoparticles, using the 3(rd) -generation Grubbs-initiator RuCl(2) (Py)(2) (IMesH(2) )(CHPh). The experimental setup and the conditions chosen allowed for the manufacturing of polymeric monoliths characterized by a homogeneous distribution of the inorganic nanoparticles throughout the polymeric monolith. Depending on the nanoparticle content, the macropore diameters could be varied in the 30-120 µm regime. Noteworthy, the addition of nanoparticles did not affect the phase separation-triggered formation of the monolithic matrix nor the meso- and microporosity as evidenced by N(2) -adsorption experiments.

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Section: Experimental Partmentioning

confidence: 99%

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Weichelt

Frerich

Lenz

et al. 2010

Macromol. Rapid Commun.

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“…37,60,61 Based on this consideration, the precise positioning of acid groups has recently been attempted, and the resultant PEMs having controlled ionic sequencing revealed well-defined ionic aggregates with a higher degree of organization in comparison to the conventional systems having a statistical distribution of acid groups. 16,[62][63][64] Although such issues in diverse sulfonated PEMs have clearly been elucidated, no consensus has thus far been reached concerning the role of the phase separation between the hydrophilic phases and hydrophobic domains in determining the membrane transport properties. The issue of phase separation should be fundamentally important in unraveling the structure-property relationship of sulfonated PEMs; however, the ill-defined, process-dependent, heterogeneous structures of many sulfonated PEMs have hampered the acquisition of quantitative information on them.…”

Section: Introductionmentioning

confidence: 99%

Ion transport in sulfonated polymers

Park

Kim

2013

J Polym Sci B Polym Phys

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As the focus on proton exchange fuel cells continues to escalate in the era of alternative energy systems, the rational design of sulfonated polymers has emerged as a key technique for enhancing device efficiency. Although the synthesis and characterization of a wide variety of sulfonated polymers have been extensively reported over the last decade, quantitative understanding of the factors governing the ion transport properties of these materials is in its infancy. In this article, we describe the current understanding of the thermodynamics and ion transport in sulfonated polymers. Various strategies for accessing improved transport properties of sulfonated polymers are presented by focusing on their structure-property relationship. The major accomplishment of obtaining well-defined morphologies for these sulfonated polymers is highlighted as a novel means of controlling the transport properties. Recent studies on the thermodynamics, morphologies, and anhydrous transport properties of sulfonated block copolymers comprising ionic liquids, geared towards high temperature polymer electrolyte membranes as a prospective technology, are also expounded.

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“…H NMR 31 P NMR 13 C NMR a b s t r a c t Dimethyl, diethyl, and di-n-butyl phosphites were reacted with methyl or ethyl oleates using thermally initiated radical reactions. Reactions were conducted with or without the presence of a dilauroyl peroxide initiator.…”

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confidence: 99%

Synthesis and spectral characterization of methyl 9(10)-dialkylphosphonostearates

Bantchev

Biresaw

Vermillion

et al. 2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Polyethylene Functionalized with Precisely Spaced Phosphonic Acid Groups

Cited by 58 publications

References 23 publications

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Ion transport in sulfonated polymers

Synthesis and spectral characterization of methyl 9(10)-dialkylphosphonostearates

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Polyethylene Functionalized with Precisely Spaced Phosphonic Acid Groups

Cited by 58 publications

References 23 publications

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO3 Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO3 Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Ion transport in sulfonated polymers

Synthesis and spectral characterization of methyl 9(10)-dialkylphosphonostearates

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Product

Resources

About

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering

Ring‐Opening Metathesis Polymerization‐Based Synthesis of CaCO₃ Nanoparticle‐Reinforced Polymeric Monoliths for Tissue Engineering