New catalysts for linear polydicyclopentadiene synthesis

Abadie, M. J. M.; Dimonie, M.; Couve, Christine; Drăguţan, Valerian

doi:10.1016/s0014-3057(99)00185-8

Cited by 37 publications

(34 citation statements)

References 15 publications

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“…The appearance of strong FTIR absorbance at 3400 and 1700 cm −1 indicates the formation of hydroxyl and carbonyls, respectively . Furthermore, the loss of alkene signal at 3050, 972, and 708 cm −1 provided further evidence for the oxidation of the material . As the pDCPD 89 network oxidized there was a concomitant increase in brittleness (Figure S2, Supporting Information).…”

Section: Resultsmentioning

confidence: 98%

Air Activated Self‐Decontaminating Polydicyclopentadiene PolyHIPE Foams for Rapid Decontamination of Chemical Warfare Agents

McGann

Daniels

Giles

et al. 2018

Macromol. Rapid Commun.

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The threat of chemical warfare agents (CWA) compels research into novel self-decontaminating materials (SDM) for the continued safety of first-responders, civilians, and active service personnel. The capacity to actively detoxify, as opposed to merely sequester, offending agents under typical environmental conditions defines the added value of SDMs in comparison to traditional adsorptive materials. Porous polymers, synthesized via the high internal phase emulsion (HIPE) templating, provide a facile fabrication method for materials with permeable open cellular structures that may serve in air filtration applications. PolyHIPEs comprising polydicyclopentadiene (polyDCPD) networks form stable hydroperoxide species following activation in air under ambient conditions. The hydroperoxide-containing polyDCPD materials react quickly with CWA simulants, Demeton-S and 2-chloroethyl ethyl sulfide, forming oxidation products as confirmed via gas chromatography mass spectrometry. The simplicity of the detoxification chemistry paired with the porous foam form factor presents an exciting opportunity for the development of self-decontaminating filter media.

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Section: Resultsmentioning

confidence: 98%

Air Activated Self‐Decontaminating Polydicyclopentadiene PolyHIPE Foams for Rapid Decontamination of Chemical Warfare Agents

McGann

Daniels

Giles

et al. 2018

Macromol. Rapid Commun.

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“…The exothermic curing peak obtained on the DSC scan for SH bleed. This peak can tell us that second step of polymerization is not complete and after additional heating of the pDCPD, more crosslinking between polymer chains can be created .…”

Section: Resultsmentioning

confidence: 99%

Thermoplastic acrylic resin with self‐healing properties

Yerro

Radojević

Radović

et al. 2015

Polymer Engineering & Sci

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This article presents a novel processing method of a self‐healing acrylic thermoplastic material starting from a healing agent in solution form. The self‐healing system consisted of a solution of the healing agent dicyclopentadiene (DCPD) in dimethylformamide (DMF) and a solution of the catalyst bis(tricyclohexylphosphine) benzylidene ruthenium (IV) dichloride (called Grubbs' catalyst) in dichloromethane (DCM). Hollow glass tubes filled with the self‐healing components were incorporated into autopolymerizing acrylic resins. The one set of tubes was filled with a solution of DCPD (containing the dye Rhodamine B as a marker) and the other set with a solution of Grubbs' catalyst in dichloromethane. FTIR and DSC analyses revealed that a poly(DCPD) film formed at the healed interface. The low energy impact tests of the samples showed a recovery of 83% after 4 days. The benefits of the Grubb's catalyst solution are twofold; besides the repair of the cracks, which is common for such a system, the reaction could decrease the content of residual monomer in the acrylic resin, which could reduce diffusion of residual monomer out of the resins. POLYM. ENG. SCI., 56:251–257, 2016. © 2015 Society of Plastics Engineers

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“…pDCPD is obtained by metathesis of dicyclopentadiene (Scheme 1) giving a linear polymer [26,27] crosslinked by polymerization self-heating [28,29]. The concentration in allylic C-H groups is [PH] ¼ 4/M 0~3 0 mol kg À1 in pDCPD instead of 37 in butadiene rubber.…”

Section: On the Oxidizability Of Pdcpd And The Influence Of Oxygen DImentioning

confidence: 99%

Kinetic analysis of polydicyclopentadiene oxidation

Defauchy

Gac

Guinault

et al. 2017

Polymer Degradation and Stability

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. b s t r a c tThe in situ thermal oxidation of thin unstabilized polydicyclopentadiene was studied by TGA to monitor mass gain, and DSC to characterize hydroperoxides concentration. Results were discussed using kinetic analysis, which allowed the estimation of activation energies for key reactions of the oxidation process. Activation energy for termination was shown to be higher than in hydrocarbon liquids, which was discussed from the theory of diffusion controlled reactions, and a possible link with local motions associated with sub-glassy transition. Activation energy of thermal decomposition of hydroperoxides was found lower than for model hydroperoxides, suggesting an accelerating effect of organometallic catalysts. Despite those two results that indicate a poor thermal stability of thin pDCPD films, measurements of oxygen diffusivity at several temperatures show that oxidation remains confined in a relatively thin surface layer which would allow the pDCPD properties to be preserved.

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New catalysts for linear polydicyclopentadiene synthesis

Cited by 37 publications

References 15 publications

Air Activated Self‐Decontaminating Polydicyclopentadiene PolyHIPE Foams for Rapid Decontamination of Chemical Warfare Agents

Air Activated Self‐Decontaminating Polydicyclopentadiene PolyHIPE Foams for Rapid Decontamination of Chemical Warfare Agents

Thermoplastic acrylic resin with self‐healing properties

Kinetic analysis of polydicyclopentadiene oxidation

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