Olefin-carbon monoxide copolymers

Sommazzi, Anna; Garbassi, F.

doi:10.1016/s0079-6700(97)00009-9

Cited by 196 publications

(180 citation statements)

References 118 publications

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“…Polyketones obtained by perfectly alternated carbon monoxide-olefin copolymerization [1][2][3][4][5][6] are of considerable interest because they exhibit an interesting overall set of physical and chemical properties and, in particular, have established their utility as thermoplastics in the production of shaped objects [4,7,8].…”

Section: Introductionmentioning

confidence: 99%

Carbon monoxide–ethylene copolymerization catalyzed by a Pd(OAc)2/dppp/formic acid system [dppp=1,3-bis(diphenylphosphino)propane]

Vavasori¹,

Cavinato

Toniolo³

2003

Journal of Molecular Catalysis A: Chemical

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Polyketones are obtained by the copolymerization of carbon monoxide and ethylene in the presence of a palladium catalyst formed in situ from Pd(OAc) 2 , dppp and formic acid in methanol which acted as a solvent. The productivity (g polymer/g Pd * h) is significantly influenced by the concentration of formic acid. Using the ratio Pd/dppp/HCOOH = 1/1/3000 at 90 • C and 45 atm, a productivity of 7500 h −1 is obtained. It is suggested that the efficiency of HCOOH as a promoter is due to its capability to act as a source of Pd-hydride species, which initiates the catalytic cycle.

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Section: Introductionmentioning

confidence: 99%

Carbon monoxide–ethylene copolymerization catalyzed by a Pd(OAc)2/dppp/formic acid system [dppp=1,3-bis(diphenylphosphino)propane]

Vavasori¹,

Cavinato

Toniolo³

2003

Journal of Molecular Catalysis A: Chemical

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“…Photodegradable polymers are typically designed in one of two ways: (1) by incorporating a photosensitive degradable chromophore into the backbone of the polymer chain; or (2) by mixing an additive into the polymer that initiates or facilitates degradation reactions (typically radical autoxidation reactions) within the polymer (8,14). The first strategy is commercially accomplished by incorporation of a carbonyl group into the backbone of polyolefins (15). One of the first commercially successful plastics of this type is E-CO plastic, which is manufactured by the copolymerization of ethylene and carbon monoxide in the presence of a catalyst to produce a polyketone (4).…”

Section: Photodegradable Polymers: Reactivity Overview and Design Primentioning

confidence: 99%

Photodegradable plastics: end-of-life design principles

Daglen

Tyler

2010

Green Chemistry Letters and Reviews

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Photochemically degradable polymers and plastics are reviewed with an emphasis on the environmental and molecular factors that control the onset of degradation and the rate of degradation. A number of principles are beginning to emerge for the design of viable photochemically degradable plastics. Among the principles discussed are those relating to the effects of chromophores, initiators, antioxidants, temperature, oxygen diffusion into the plastic, polymer crystallinity, tensile and compressive stress, and the absorbed light intensity on the plastic. To obtain a plastic with a controlled lifetime and a specific rate of degradation, many of these parameters can be controlled or adjusted in the design stage of the plastic.

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“…The palladium-catalyzed copolymerization of ethene and carbon monoxide produces an alternating polyketone of a high crystallinity (Sommazzi and Garbassi, 1997;Vavasori et al, 2004) of general formula:…”

Section: The Polyketone Polymermentioning

confidence: 99%

Polyketone polymer: A new support for direct enzyme immobilization

Agostinelli

Belli

Tempera

et al. 2007

Journal of Biotechnology

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Polyketone polymer [ CO CH 2 CH 2 ] n , obtained by copolymerization of ethene and carbon monoxide, is utilized for immobilization of three different enzymes, one peroxidase from horseradish (HRP) and two amine oxidases, from bovine serum (BSAO) and lentil seedlings (LSAO). The easy immobilization procedure is carried out in diluted buffer, at pH 7.0 and 3 • C, gently mixing the proteins with the polymer. No bifunctional reagents and spacer arms are required for the immobilization, which occurs exclusively via a large number of hydrogen bonds between the carbonyl groups of the polymer and the NH groups of the polypeptidic chain. Experiments demonstrate a high linking capacity of polymer for BSAO and an extraordinary strong linkage for LSAO. Moreover, activity measurements demonstrate that immobilized LSAO totally retains the catalytic characteristics of the free enzyme, where only a limited increase of K M value is observed. Finally, the HRP-activated polymer is successfully used as active packed bed of an enzymatic reactor for continuous flow conversion and flow injection analysis of hydrogen peroxide containing solutions.

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Olefin-carbon monoxide copolymers

Cited by 196 publications

References 118 publications

Carbon monoxide–ethylene copolymerization catalyzed by a Pd(OAc)2/dppp/formic acid system [dppp=1,3-bis(diphenylphosphino)propane]

Carbon monoxide–ethylene copolymerization catalyzed by a Pd(OAc)2/dppp/formic acid system [dppp=1,3-bis(diphenylphosphino)propane]

Photodegradable plastics: end-of-life design principles

Polyketone polymer: A new support for direct enzyme immobilization

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