Quebec Center for Functional Materials Nano

Montréal, Canada

Quebec Center for Functional Materials Nano

Montréal, Canada

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Daigle J.-C.,Quebec Center for Functional Materials Nano | Arnold A.A.,Quebec Center for Functional Materials Nano | Piche L.,Quebec Center for Functional Materials Nano | Claverie J.P.,Quebec Center for Functional Materials Nano
Polymer Chemistry | Year: 2013

The crystallinity of a linear copolymer of ethylene and diacetone acrylamide (DAAM) prepared by Pd catalyzed polymerization was eliminated when reacted with hydrazine in the gas phase and recovered when treated with ozone gas. © 2013 The Royal Society of Chemistry.


Piche L.,Quebec Center for Functional Materials Nano | Daigle J.-C.,Quebec Center for Functional Materials Nano | Claverie J.P.,Quebec Center for Functional Materials Nano
Chemical Communications | Year: 2011

A ruthenium phosphane aryl sulfonate was found to be an efficient catalyst for the polymerization of ethene. Surprisingly, the resulting polyethylene is crosslinked. © 2011 The Royal Society of Chemistry.


Piche L.,Quebec Center for Functional Materials Nano | Daigle J.-C.,Quebec Center for Functional Materials Nano | Rehse G.,Quebec Center for Functional Materials Nano | Claverie J.P.,Quebec Center for Functional Materials Nano
Chemistry - A European Journal | Year: 2012

Palladium phosphanesulfonate [R 2P(C 6H 4-o-SO 3)PdMeL] catalysts permit the copolymerization of an exceptional large number of functional olefins with ethylene. However, these catalysts usually have reduced activity. We here have conducted a systematic study on the influence of the phosphane substituent, R, on activity and molecular weight. Phosphanes with strong σ-donating character are shown to lead to the most active catalysts. Thus, the catalyst based on phosphane bis-tert-butyl-phosphanyl-benzenesulfonic acid (R=tBu) exhibits unprecedented high activity, rapidly polymerizing ethylene at room temperature to yield a linear polymer of high molecular weight (M w=116 000 g mol -1). The influence of the R group on the catalyst ability to incorporate methyl acrylate is also investigated. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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