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  1. Article ; Online: Cascade Exotherms for Rapidly Producing Hybrid Nonisocyanate Polyurethane Foams from Room Temperature Formulations.

    Bourguignon, Maxime / Grignard, Bruno / Detrembleur, Christophe

    Journal of the American Chemical Society

    2023  Volume 146, Issue 1, Page(s) 988–1000

    Abstract: For decades, self-blown polyurethane foams─found in an impressive range of materials─are produced by the toxic isocyanate chemistry and are difficult to recycle. Producing them in existing production plants by a rapid isocyanate-free self-blowing process ...

    Abstract For decades, self-blown polyurethane foams─found in an impressive range of materials─are produced by the toxic isocyanate chemistry and are difficult to recycle. Producing them in existing production plants by a rapid isocyanate-free self-blowing process from room temperature (RT) formulations is a long-lasting challenge. The recent water-induced self-blowing of nonisocyanate polyurethane (NIPU) formulations composed of a CO
    Language English
    Publishing date 2023-12-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.3c11637
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Intensified Continuous Flow Process for the Scalable Production of Bio-Based Glycerol Carbonate.

    Muzyka, Claire / Renson, Sébastien / Grignard, Bruno / Detrembleur, Christophe / Monbaliu, Jean-Christophe M

    Angewandte Chemie (International ed. in English)

    2024  Volume 63, Issue 10, Page(s) e202319060

    Abstract: A subtle combination of fundamental and applied organic chemistry toward process intensification is demonstrated for the large-scale production of bio-based glycerol carbonate under flow conditions. The direct carbonation of bio-based glycidol with ... ...

    Abstract A subtle combination of fundamental and applied organic chemistry toward process intensification is demonstrated for the large-scale production of bio-based glycerol carbonate under flow conditions. The direct carbonation of bio-based glycidol with CO
    Language English
    Publishing date 2024-01-24
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202319060
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  3. Article ; Online: Divergent Aminolysis Approach for Constructing Recyclable Self-Blown Nonisocyanate Polyurethane Foams.

    Monie, Florent / Grignard, Bruno / Detrembleur, Christophe

    ACS macro letters

    2022  Volume 11, Issue 2, Page(s) 236–242

    Abstract: We report an approach to fabricate self-blown nonisocyanate polyurethane (NIPU) foams by capitalizing on the divergent chemistries of amines with cyclic carbonates─creating the polymer network─and thiolactone─ ... ...

    Abstract We report an approach to fabricate self-blown nonisocyanate polyurethane (NIPU) foams by capitalizing on the divergent chemistries of amines with cyclic carbonates─creating the polymer network─and thiolactone─delivering
    Language English
    Publishing date 2022-01-20
    Publishing country United States
    Document type Journal Article
    ISSN 2161-1653
    ISSN (online) 2161-1653
    DOI 10.1021/acsmacrolett.1c00793
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  4. Article ; Online: Exovinylene Cyclic Carbonates: Multifaceted CO

    Ngassam Tounzoua, Charlène / Grignard, Bruno / Detrembleur, Christophe

    Angewandte Chemie (International ed. in English)

    2022  Volume 61, Issue 22, Page(s) e202116066

    Abstract: Carbon dioxide is a renewable, inexhaustible, and cheap alternative to fossil resources for the production of fine chemicals and plastics. It can notably be converted into exovinylene cyclic carbonates, unique synthons gaining momentum for the ... ...

    Abstract Carbon dioxide is a renewable, inexhaustible, and cheap alternative to fossil resources for the production of fine chemicals and plastics. It can notably be converted into exovinylene cyclic carbonates, unique synthons gaining momentum for the preparation of an impressive range of important organic molecules and functional polymers, in reactions proceeding with 100 % atom economy under mild operating conditions in most cases. This Review summarizes the recent advances in their synthesis with particular attention on describing the catalysts needed for their preparation and discussing the unique reactivity of these CO
    Language English
    Publishing date 2022-04-05
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202116066
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  5. Article ; Online: Water-Induced Self-Blown Non-Isocyanate Polyurethane Foams.

    Bourguignon, Maxime / Grignard, Bruno / Detrembleur, Christophe

    Angewandte Chemie (International ed. in English)

    2022  Volume 61, Issue 51, Page(s) e202213422

    Abstract: For 80 years, polyisocyanates and polyols were central building blocks for the industrial fabrication of polyurethane (PU) foams. By their partial hydrolysis, isocyanates release ... ...

    Abstract For 80 years, polyisocyanates and polyols were central building blocks for the industrial fabrication of polyurethane (PU) foams. By their partial hydrolysis, isocyanates release CO
    Language English
    Publishing date 2022-11-17
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202213422
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Introducing Polyhydroxyurethane Hydrogels and Coatings for Formaldehyde Capture.

    Bourguignon, Maxime / Grignard, Bruno / Detrembleur, Christophe

    ACS applied materials & interfaces

    2021  Volume 13, Issue 45, Page(s) 54396–54408

    Abstract: Formaldehyde (FA) is a harmful chemical product largely used for producing resins found in our living spaces. Residual FA that leaches out the resin contributes to our indoor air pollution and causes some important health issues. Systems able to capture ... ...

    Abstract Formaldehyde (FA) is a harmful chemical product largely used for producing resins found in our living spaces. Residual FA that leaches out the resin contributes to our indoor air pollution and causes some important health issues. Systems able to capture this volatile organic compound are highly desirable; however, traditional adsorbents are most often restricted to air filtration systems. Herein, we report novel waterborne coatings that are acting as a FA sponge for indoor air decontamination. These coatings, of the poly(hydroxyurethane) (PHU) type, rich in primary amine groups, are prepared by the polyaddition of a hydrosoluble dicyclic carbonate to a polyamine in water at room temperature under catalyst-free conditions. We highlight the importance of the choice of the polyamine on the curing rate of the formulation and on the FA capture ability of PHU. The excellent FA capturing ability of the best candidate is rationalized by investigating the action mode of the polyamine used to construct PHUs. With poly(vinyl amine), FA is covalently and permanently bound to PHU, with no release over time. The performance of the coating in FA abatement is impressive, with more than 90% of captured FA after one day of contact. The facility to prepare these transparent and colorless coatings from waterborne formulations gives access to new efficient indoor air depolluting solutions, potentially applicable to various surfaces of our living spaces (wall, ceiling, etc.).
    Language English
    Publishing date 2021-11-06
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.1c16917
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Introducing Polyhydroxyurethane Hydrogels and Coatings for Formaldehyde Capture

    Bourguignon, Maxime / Grignard, Bruno / Detrembleur, Christophe

    ACS applied materials & interfaces. 2021 Nov. 06, v. 13, no. 45

    2021  

    Abstract: Formaldehyde (FA) is a harmful chemical product largely used for producing resins found in our living spaces. Residual FA that leaches out the resin contributes to our indoor air pollution and causes some important health issues. Systems able to capture ... ...

    Abstract Formaldehyde (FA) is a harmful chemical product largely used for producing resins found in our living spaces. Residual FA that leaches out the resin contributes to our indoor air pollution and causes some important health issues. Systems able to capture this volatile organic compound are highly desirable; however, traditional adsorbents are most often restricted to air filtration systems. Herein, we report novel waterborne coatings that are acting as a FA sponge for indoor air decontamination. These coatings, of the poly(hydroxyurethane) (PHU) type, rich in primary amine groups, are prepared by the polyaddition of a hydrosoluble dicyclic carbonate to a polyamine in water at room temperature under catalyst-free conditions. We highlight the importance of the choice of the polyamine on the curing rate of the formulation and on the FA capture ability of PHU. The excellent FA capturing ability of the best candidate is rationalized by investigating the action mode of the polyamine used to construct PHUs. With poly(vinyl amine), FA is covalently and permanently bound to PHU, with no release over time. The performance of the coating in FA abatement is impressive, with more than 90% of captured FA after one day of contact. The facility to prepare these transparent and colorless coatings from waterborne formulations gives access to new efficient indoor air depolluting solutions, potentially applicable to various surfaces of our living spaces (wall, ceiling, etc.).
    Keywords adsorbents ; air ; ambient temperature ; carbonates ; chemical bonding ; decontamination ; filtration ; formaldehyde ; hydrogels ; indoor air pollution ; polyamines ; volatile organic compounds
    Language English
    Dates of publication 2021-1106
    Size p. 54396-54408.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1944-8252
    DOI 10.1021/acsami.1c16917
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Catalyst-Free Approach for the Degradation of Bio- and CO₂-Sourced Polycarbonates: A Step toward a Circular Plastic Economy

    Siragusa, Fabiana / Habets, Thomas / Méreau, Raphael / Evano, Gwilherm / Grignard, Bruno / Detrembleur, Christophe

    ACS sustainable chemistry & engineering. 2022 June 24, v. 10, no. 27

    2022  

    Abstract: Designing easily degradable polymers has become a new challenge to overcome the post-consumer plastic waste accumulation in the environment. Polycarbonates are important polymers that can be chemically recycled; however, most often, their degradation ... ...

    Abstract Designing easily degradable polymers has become a new challenge to overcome the post-consumer plastic waste accumulation in the environment. Polycarbonates are important polymers that can be chemically recycled; however, most often, their degradation requires high temperatures and/or the use of catalysts. In this work, we report the facile chemical recycling of regioregular polycarbonates prepared by the organocatalyzed copolymerization of CO₂-sourced exovinylene biscyclic carbonates (BisαCC) with diols derived from biomass. These polymers, thanks to their pending ketone groups, are rapidly (<30 min) and totally deconstructed into the parent diol and a bis(oxazolidinone) by catalyst-free aminolysis at 25 °C. By using 3-propanolamine for the aminolysis, a hydroxy-functionalized bis(oxazolidinone) is recovered, which can be copolymerized with BisαCC to yield a polymer alternating carbonate and oxazolidinone linkages. Importantly, the same bis(oxazolidinone) scaffold is recovered as the main product by aminolysis of this copolymer, offering a close-loop recycling scenario for this polymer. This work illustrates that these polycarbonates are prone to facile and complete aminolysis under mild and catalyst-free conditions, but can also be exploited to prepare new building blocks for the synthesis of novel degradable polymers. The mechanism of formation of these heterocycles is studied by model reactions and rationalized by density functional theory (DFT) calculations.
    Keywords aminolysis ; biomass ; carbonates ; composite polymers ; copolymerization ; density functional theory ; glycols ; green chemistry ; heterocyclic compounds
    Language English
    Dates of publication 2022-0624
    Size p. 8863-8875.
    Publishing place American Chemical Society
    Document type Article
    ISSN 2168-0485
    DOI 10.1021/acssuschemeng.2c01891
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: A supercritical fluid technology for liposome production and comparison with the film hydration method.

    Penoy, Noémie / Grignard, Bruno / Evrard, Brigitte / Piel, Géraldine

    International journal of pharmaceutics

    2020  Volume 592, Page(s) 120093

    Abstract: Liposomes were produced by an innovative method using supercritical carbon dioxide as a dispersing agent. A quality by design strategy was used to find optimal production conditions with specific parameters (lipid concentration, dispersion volume, ... ...

    Abstract Liposomes were produced by an innovative method using supercritical carbon dioxide as a dispersing agent. A quality by design strategy was used to find optimal production conditions with specific parameters (lipid concentration, dispersion volume, agitation rate, temperature and pressure) allowing the production of liposomes with predicted physicochemical characteristics (particles size and PdI). Two conditions were determined with specific production parameters. It was shown that these two conditions allowed the production of liposomes of different compositions and that most of the liposome formulations had size and dispersity in accordance with the prediction values. The condition involving the higher lipid concentration showed a higher variability in terms of size and dispersity. However, this variability remained acceptable. This innovative supercritical method allowed the production of liposomes with physicochemical characteristics similar to those obtained by the conventional thin film hydration method. This new supercritical carbon dioxide method easily scalable in GMP conditions is a one-step production method contrarily to conventional methods which generally need an additional step as extrusion to homogenize the size of liposomes.
    MeSH term(s) Carbon Dioxide ; Drug Compounding ; Liposomes ; Particle Size ; Technology
    Chemical Substances Liposomes ; Carbon Dioxide (142M471B3J)
    Language English
    Publishing date 2020-11-16
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 428962-6
    ISSN 1873-3476 ; 0378-5173
    ISSN (online) 1873-3476
    ISSN 0378-5173
    DOI 10.1016/j.ijpharm.2020.120093
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  10. Article ; Online: An innovative one step green supercritical CO

    Penoy, Noémie / Delma, Kouka Luc / Tonakpon, Hermane Avohou / Grignard, Bruno / Evrard, Brigitte / Piel, Géraldine

    International journal of pharmaceutics

    2022  Volume 627, Page(s) 122212

    Abstract: Budesonide and salbutamol-loaded liposomes were prepared using an innovative one step supercritical ... ...

    Abstract Budesonide and salbutamol-loaded liposomes were prepared using an innovative one step supercritical CO
    MeSH term(s) Liposomes/chemistry ; Carbon Dioxide/chemistry ; Trehalose ; Budesonide ; Albuterol ; Phosphatidylcholines ; Cholesterol ; Solvents ; Polyethylene Glycols ; Particle Size
    Chemical Substances Liposomes ; Carbon Dioxide (142M471B3J) ; Trehalose (B8WCK70T7I) ; Budesonide (51333-22-3) ; Albuterol (QF8SVZ843E) ; Phosphatidylcholines ; Cholesterol (97C5T2UQ7J) ; Solvents ; Polyethylene Glycols (3WJQ0SDW1A)
    Language English
    Publishing date 2022-09-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 428962-6
    ISSN 1873-3476 ; 0378-5173
    ISSN (online) 1873-3476
    ISSN 0378-5173
    DOI 10.1016/j.ijpharm.2022.122212
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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