References of "Detrembleur, Christophe"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailSupported cobalt mediated radical polymerization (SCMRP) of vinyl acetate and recycling of the cobalt complex
Sciannamea, Valérie; Debuigne, Antoine ULg; Piette, Yasmine ULg et al

in Chemical Communications (2006), (40), 4180-4182

Cobalt complexes supported on silica and Merrifield resin are effective mediators for the controlled radical polymerization of vinyl acetate.

Detailed reference viewed: 26 (3 ULg)
Full Text
Peer Reviewed
See detailNew nanostructured materials based on fullerene and biodegradable polyesters
Stoilova, Olya; Jérôme, Christine ULg; Detrembleur, Christophe ULg et al

in Chemistry of Materials (2006), 18(20), 4917-4923

Star-shaped poly(epsilon-caprolactone) (PCL) with a fullerene (C-60) core, C-60[N(CH2)(12)OPCLOH](x), was successfully synthesized by reaction of azide-terminated PCL with C-60. Both the experimental ... [more ▼]

Star-shaped poly(epsilon-caprolactone) (PCL) with a fullerene (C-60) core, C-60[N(CH2)(12)OPCLOH](x), was successfully synthesized by reaction of azide-terminated PCL with C-60. Both the experimental conditions and the stoichiometry were optimized, such that an average of six PCL chains was grafted per fullerene core. The molecular weight of the polyester chains directly controlled the length of the arms of the star-shaped polymers. Singlet oxygen was generated on irradiation of the C-60[N(CH2)(12)OPCLOH] x nanohybrids. These C-60[N(CH2)(12)OPCLOH](x) nanohybrids were then processed in two kinds of nanomaterials. First, they were encapsulated within the core of micelles formed by biocompatible amphiphilic block copolymers. In water, the particle size distribution of these nanoparticles was narrow, and their diameter was in the range of 100 to 200 nm. Second, C-60-containing micro-/nanosized polymer fibers were prepared, for the first time, by electrospinning. The average diameter of the fibers was varied by tuning the PCL/C-60[N(CH2)(12)OPCLOH](x) weight ratio. Grafting of polyester chains onto C-60 is thus a suitable strategy for producing easily processable C-60 and attractive building blocks for incorporation of C-60 in nanomaterials. [less ▲]

Detailed reference viewed: 50 (4 ULg)
Full Text
See detailCobalt-mediated radical polymerization of vinyl acetate: a new tool for macromolecular engineering
Debuigne, Antoine ULg; Detrembleur, Christophe ULg; Bryaskova, Rayna et al

in Matyjaszewski, Krzysztof (Ed.) Controlled/living radical polymerization: from synthesis to materials (2006)

Detailed reference viewed: 16 (3 ULg)
Peer Reviewed
See detailNew functional polyvinylacetate and polyvinylalcohol architectures
Detrembleur, Christophe ULg

Conference (2006, September 04)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailUltrathin transparent conductive films of polymer-modified multiwalled carbon nanotubes
Bocharova, Vera; Kiriy, Anton; Oertel, Ulrich et al

in Journal of Physical Chemistry B (2006), 110(30), 14640-14644

Deposition of multiwalled carbon nanotubes modified by poly(2-vinylpyridine) (CNT-g-P2VP) from aqueous dispersions at low pH is an effective method to prepare homogeneous ultrathin films with a tunable ... [more ▼]

Deposition of multiwalled carbon nanotubes modified by poly(2-vinylpyridine) (CNT-g-P2VP) from aqueous dispersions at low pH is an effective method to prepare homogeneous ultrathin films with a tunable CNTs density. A percolation threshold of 0.25 mu g/cm(2) and a critical exponent alpha = 1.24 have been found from dc conductivity measurements. The sheet resistance value agrees with the percolation theory for 2D films. According to AFM and electrical measurements, even when only 5% of the surface is covered by CNT-g-P2VPs, the sheet resistance is of the order of 1 M Omega/sq, which indicates that conductivity is imparted by a network of an ultralow density. When the film transmittance decreases down to similar to 70% at 550 nm, the occupied surface area is similar to 15% and sheet resistance falls down to similar to 90 k Omega/sq. These data show that undesired in-plane clustering does not occur upon the dispersion casting of the films and that high-quality networks of CNT-g-P2VPs are built up. The electrosteric stabilization of the CNT-g-P2VP dispersions in water at low pH is at the origin of this desired behavior. Although the multiwalled CNT films prepared in this work are less conductive and less transparent than the SWNTs films, they could find applications, e. g., in touch screens, reflective displays, EMI shielding, and static charge dissipation. [less ▲]

Detailed reference viewed: 45 (4 ULg)
Full Text
Peer Reviewed
See detailPolyolefin matrixes with permanent antibacterial activity : preparation, antibacterial activity, and action mode of the active species
Lenoir, Sandrine ULg; Pagnoulle, Christophe; Galleni, Moreno ULg et al

in Biomacromolecules (2006), 7(8), 2291-2296

Poly[2-(tert-butylamino)ethyl methacrylate] (PTBAEMA) belongs to a novel class of water-insoluble biocides. Dispersion of a poly(ethylene-co-butylene)-b-poly[2-(tert-butylamino)ethyl methacrylate] diblock ... [more ▼]

Poly[2-(tert-butylamino)ethyl methacrylate] (PTBAEMA) belongs to a novel class of water-insoluble biocides. Dispersion of a poly(ethylene-co-butylene)-b-poly[2-(tert-butylamino)ethyl methacrylate] diblock copolymer (PEB-b-PTBAEMA) within low-density polyethylene (LDPE) imparts antimicrobial properties to the polyolefin as assessed by the viable cell counting method against Escherichia coli (E. coli). This diblock copolymer has been synthesized by atom transfer radical polymerization (ATRP) with a poly(ethylene-co-butylene) (PEB) oligomer end-capped by an activated bromide as a macroinitiator for the polymerization of 2-(tert-butylamino)ethyl methacrylate (TBAEMA). Morphological changes of E. coli bacteria in contact with modified LDPE have been observed by transmission and scanning electron microscopy and indicate that the diblock copolymer is bactericide rather than bacteriostatic. Finally, the action mode of the PEB-b-PTBAEMA copolymer more likely relies on the displacement of the Ca2+ and/or Mg2+ ions of the outer membrane of the bacteria, which is disorganized and finally disrupted. [less ▲]

Detailed reference viewed: 57 (7 ULg)
Full Text
Peer Reviewed
See detailSimple method for the stretching and alignment of single adsorbed synthetic polycations
Bocharova, Vera; Kiriy, Anton; Stamm, Manfred et al

in Small : Nano Micro (2006), 2(7), 910-916

Spin-coating of isolated positively charged macromolecules onto mica in the presence of octylamine was found to be a simple and general method of stretching and aligning the macromolecular chains. The ... [more ▼]

Spin-coating of isolated positively charged macromolecules onto mica in the presence of octylamine was found to be a simple and general method of stretching and aligning the macromolecular chains. The contour length and molar mass for the stretched macromolecules can be directly measured by atomic force microscopy, which makes this method a very useful analytical tool. Moreover, the molecular height is increased by codeposition with octylamine, which drastically improves the molecular resolution and allows even ultrathin polycations to be visualized. The reason for the key role of the octylamine is found in the formation of an ultrathin liquidlike alkylamine film, which reduces the surface energy of mica and weakens the interactions between the surface and the charged macromolecules. [less ▲]

Detailed reference viewed: 25 (7 ULg)
See detailEfficient controlled radical polymerization of vinyl acetate based on cobast complexes
Debuigne, Antoine ULg; Detrembleur, Christophe ULg; Bryaskova, Rayna et al

Conference (2006, May 18)

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailRadiation-curing binders and a process for their preparation
Detrembleur, Christophe ULg

Patent (2006)

The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic ... [more ▼]

The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures <=130 DEG C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of >=2, in the presence of D) a catalyst containing one or more zinc compounds, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups. The present invention also relates to the binders obtained by the pro cess of the invention. [less ▲]

Detailed reference viewed: 22 (5 ULg)
Full Text
See detailLow viscosity allophanates containing actinically curable groups
Weikard, Jan; Detrembleur, Christophe ULg; Greszta-Frank, Dorota et al

Patent (2006)

PROBLEM TO BE SOLVED: To provide a process for producing a radiation-curing binder containing an allophanate group; and to provide the binder obtained by the process, and a coating composition containing ... [more ▼]

PROBLEM TO BE SOLVED: To provide a process for producing a radiation-curing binder containing an allophanate group; and to provide the binder obtained by the process, and a coating composition containing the binder. ; SOLUTION: The process comprises reacting at a temperature of <=130[deg.]C (A) one or more compounds containing uretdione groups with (B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), (C) optionally NCO-reactive compounds other than (B) in the presence of (D) a catalyst containing at least one zinc compound to form allophanate groups by opening the uretdione ring. [less ▲]

Detailed reference viewed: 21 (2 ULg)
Full Text
See detailRadiation-curing binders and a process for their preparation
Weikard, Jan; Greszta-Franz, Dorota; Fischer, Wolfgang et al

Patent (2006)

PROBLEM TO BE SOLVED: To provide a process for preparing a binder which contains (1) an allophanate group, (2) a group that reacts with an ethylenically unsaturated compound with polymerization on ... [more ▼]

PROBLEM TO BE SOLVED: To provide a process for preparing a binder which contains (1) an allophanate group, (2) a group that reacts with an ethylenically unsaturated compound with polymerization on exposure to actinic radiation (radiation-curing group) and (3) optionally an NCO-reactive group; and to provide the binder obtained by the process. ; SOLUTION: The process comprises reacting at a temperature <=130[deg.]C, (A) one or more NCO-functional compounds containing uretdione groups with (B) one or more compounds that contain isocyanate-reactive groups and radiation-curing groups and then (C) with one or more saturated hydroxy-containing compounds other than (B), at least one of these compounds having an OH functionality of >=2, in the presence of (D) a catalyst containing one or more zinc compounds, the reaction with compounds (C) taking place at least proportionally with the formation of allophanate groups. [less ▲]

Detailed reference viewed: 12 (4 ULg)
Full Text
Peer Reviewed
See detailPreparation of well-defined PVOH/C60 nanohybrids by cobalt-mediated radical polymerization of vinyl acetate
Detrembleur, Christophe ULg; Stoilova, Olya; Bryaskova, Rayna ULg et al

in Macromolecular Rapid Communications (2006), 27(7), 498-504

Poly(vinyl acetate) chains end-capped by a Co(acac)(2) complex [PVAc-Co(acac)(2)] were prepared by bulk cobalt-mediated radical polymerization (CMRP) of vinyl acetate and used for grafting fullerene (C60 ... [more ▼]

Poly(vinyl acetate) chains end-capped by a Co(acac)(2) complex [PVAc-Co(acac)(2)] were prepared by bulk cobalt-mediated radical polymerization (CMRP) of vinyl acetate and used for grafting fullerene (C60) with four PVAc arms at low temperature (30 degrees C). A photoactive water-soluble poly(vinyl alcohol)/C60 nanohybrid was then prepared by hydrolysis of the PVAc arms of the nanohybrid. Because of photoactivity and very low cytotoxicity, this type of water-soluble nanohybrid is very promising for the photodynamic cancer therapy. [less ▲]

Detailed reference viewed: 51 (5 ULg)
See detailVinyl acetate: a challenge for living radical polymerisation
Detrembleur, Christophe ULg

Scientific conference (2006, March 24)

Detailed reference viewed: 3 (1 ULg)
Full Text
See detailThe in situ polymerization of monoethylenically unsaturated monomers with oligomeric or polymeric secondary amines
Detrembleur, Christophe ULg; Rüdiger, Claus; Meyer, Rolf-Volker

Patent (2006)

A process for the preparation of (co)oligomers or (co)polymers is disclosed. The process entails first the preparation of a mixture that contains a monoethylenically unsaturated monomer conforming to HR<1 ... [more ▼]

A process for the preparation of (co)oligomers or (co)polymers is disclosed. The process entails first the preparation of a mixture that contains a monoethylenically unsaturated monomer conforming to HR<1>C = CR<2>R<3> an oxidizing agent and at least one polymer or oligomer conforming to formula (I), <CHEM> and an optional free radical initiator and then heating the mixture at a temperature in the range of 0 DEG C to 220 DEG C. [less ▲]

Detailed reference viewed: 19 (5 ULg)
Full Text
See detailRadiation-curing binders and a process for their preparation
Weikard, Jan; Detrembleur, Christophe ULg; Greszta-Franz, Dorota et al

Patent (2006)

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically ... [more ▼]

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds; saturated, hydroxyl-containing compound(s); and a catalyst containing ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids. Preparation of a binder containing allophanate groups, groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and optionally isocyanate (NCO)-reactive groups, which comprises reacting at 130[deg]C NCO-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups); saturated, hydroxyl-containing compound(s), at least one of these compounds having an OH functionality of 2; and a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction hydroxyl-containing compounds taking place at least proportionally with the formation of allophanate groups. An independent claim is also included for a coating composition comprising: (1) binders; (2) optionally polyisocyanate(s) which contain free or blocked isocyanate groups and optionally contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; (3) optionally compounds other than the polyisocyanate(s) which contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation and optionally contain NCO-reactive groups; (4) optionally isocyanate-reactive compound(s) which are free from groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; and (5) initiators. [less ▲]

Detailed reference viewed: 6 (3 ULg)
Full Text
See detailLow-viscosity allophanates having actinically hardenable groups
Weikard, Jan; Detrembleur, Christophe ULg; Grestza-Franz, Dorota et al

Patent (2006)

A radiation-curing binder containing allophanate groups is prepared by reacting at =130[deg]C compound(s) containing uretdione groups with OH-functional compounds containing groups reacting with ... [more ▼]

A radiation-curing binder containing allophanate groups is prepared by reacting at =130[deg]C compound(s) containing uretdione groups with OH-functional compounds containing groups reacting with polymerization with ethylenically unsaturated compounds on exposure to actinic radiation, optionally other NCO-reactive compounds, in the presence of a catalyst comprising at least one zinc compound to form allophanate groups by opening the uretdione ring. Independent claims are also included for: (A) a coating composition comprising the radiation-curing binder(s) containing allophanate groups, optionally polyisocyanate(s) containing free or blocked isocyanate groups, which are free from groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation, optionally other compounds containing groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation, and optionally contain free or blocked NCO groups, optionally one or more isocyanate-reactive compounds, initiator(s), and optionally solvents; and (B) a substrate coated with a coating obtained from the radiation-curing binder containing allophanate groups. [less ▲]

Detailed reference viewed: 40 (3 ULg)
Full Text
See detailRadiation-curing binders and a process for their preparation
Weikard, Jan; Detrembleur, Christophe ULg

Patent (2006)

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically ... [more ▼]

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds; saturated, hydroxyl-containing compound(s); and a catalyst containing ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids. Preparation of a binder containing allophanate groups, groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and optionally isocyanate (NCO)-reactive groups, which comprises reacting at 130[deg]C NCO-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups); saturated, hydroxyl-containing compound(s), at least one of these compounds having an OH functionality of 2; and a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction hydroxyl-containing compounds taking place at least proportionally with the formation of allophanate groups. An independent claim is also included for a coating composition comprising: (1) binders; (2) optionally polyisocyanate(s) which contain free or blocked isocyanate groups and optionally contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; (3) optionally compounds other than the polyisocyanate(s) which contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation and optionally contain NCO-reactive groups; (4) optionally isocyanate-reactive compound(s) which are free from groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; and (5) initiators. [less ▲]

Detailed reference viewed: 5 (3 ULg)
Full Text
See detailHerstellung von neuen strahlenhärtbarenden Bindemitteln
Weikard, Jan; Greszta-Franz, Dorota; Fischer, Wolfgang et al

Patent (2006)

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically ... [more ▼]

A binder is prepared by reacting isocyanate-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds; saturated, hydroxyl-containing compound(s); and a catalyst containing ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids. Preparation of a binder containing allophanate groups, groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and optionally isocyanate (NCO)-reactive groups, which comprises reacting at 130[deg]C NCO-functional compound(s) containing uretdione groups; compounds that contain isocyanate-reactive groups and contain groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups); saturated, hydroxyl-containing compound(s), at least one of these compounds having an OH functionality of 2; and a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction hydroxyl-containing compounds taking place at least proportionally with the formation of allophanate groups. An independent claim is also included for a coating composition comprising: (1) binders; (2) optionally polyisocyanate(s) which contain free or blocked isocyanate groups and optionally contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; (3) optionally compounds other than the polyisocyanate(s) which contain groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation and optionally contain NCO-reactive groups; (4) optionally isocyanate-reactive compound(s) which are free from groups which react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation; and (5) initiators. [less ▲]

Detailed reference viewed: 29 (3 ULg)