Articles producció científica> Química Analítica i Química Orgànica

Novel hybrid organic/inorganic poly(thiourethane) covalent adaptable networks

  • Identification data

    Identifier: imarina:9280531
    Authors:
    Guerrero, FedericoDe la Flor, SilviaRamis, XavierSantos, Jose-IgnacioSerra, Angels
    Abstract:
    Organic-inorganic hybrid materials combine the advantages of both phases: hardness and strength of inorganic phase and elasticity and toughness of the organic matrix. In the present study, we have prepared nanocomposites with a poly(thiourethane) polymeric matrix and silsesquioxane-type structures, with thiols as reactive groups (POSS-A or POSS-B, synthesized in different pressure conditions), looking for a covalent interaction between both phases, and good dispersion. Due to the click behavior of the reaction between the isocyanate and the thiol groups, highly homogeneous materials are obtained. Both monomers, catalyst (dibutyltin dilaurate, DBTDL), and the POSS precursor (3-mercaptopropyl trimethoxysilane, MPTMS), are commercially available, which present the advantage of being industrially scalable. The incorporation of POSS leads to an increase in glassy and rubbery storage moduli and the temperature of the maximum of tan delta curve. The vitrimeric behavior of the poly(thiourethanes) improved with the POSS incorporation, getting lower relaxation times. With a higher proportion of closed cages, POSS-B leads to the most significant improvements. All the materials prepared showed high transparency and the fracture of POSS modified materials indicates an improved toughness.
  • Others:

    Author, as appears in the article.: Guerrero, Federico; De la Flor, Silvia; Ramis, Xavier; Santos, Jose-Ignacio; Serra, Angels
    Department: Enginyeria Mecànica Química Analítica i Química Orgànica
    URV's Author/s: De la Flor Lopez, Silvia / Guerrero Ruiz, Federico / Serra Albet, Maria Angels
    Keywords: Vitrimers Thermosets Poss Polyurethane Poly(thiourethane) Oligomeric silsesquioxane poss Nanocomposites Kinetics Epoxy Dielectric-properties Click reaction Chemistry
    Abstract: Organic-inorganic hybrid materials combine the advantages of both phases: hardness and strength of inorganic phase and elasticity and toughness of the organic matrix. In the present study, we have prepared nanocomposites with a poly(thiourethane) polymeric matrix and silsesquioxane-type structures, with thiols as reactive groups (POSS-A or POSS-B, synthesized in different pressure conditions), looking for a covalent interaction between both phases, and good dispersion. Due to the click behavior of the reaction between the isocyanate and the thiol groups, highly homogeneous materials are obtained. Both monomers, catalyst (dibutyltin dilaurate, DBTDL), and the POSS precursor (3-mercaptopropyl trimethoxysilane, MPTMS), are commercially available, which present the advantage of being industrially scalable. The incorporation of POSS leads to an increase in glassy and rubbery storage moduli and the temperature of the maximum of tan delta curve. The vitrimeric behavior of the poly(thiourethanes) improved with the POSS incorporation, getting lower relaxation times. With a higher proportion of closed cages, POSS-B leads to the most significant improvements. All the materials prepared showed high transparency and the fracture of POSS modified materials indicates an improved toughness.
    Thematic Areas: Química Polymers and plastics Polymer science Physics and astronomy (miscellaneous) Physics and astronomy (all) Organic chemistry Odontología Materials chemistry Materiais Interdisciplinar General physics and astronomy Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências ambientais Ciência de alimentos Ciência da computação Biotecnología Astronomia / física Arquitetura, urbanismo e design
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: angels.serra@urv.cat federico.guerrero@estudiants.urv.cat federico.guerrero@estudiants.urv.cat silvia.delaflor@urv.cat
    Author identifier: 0000-0003-1387-0358 0000-0001-7163-4068 0000-0001-7163-4068 0000-0002-6851-1371
    Record's date: 2024-11-02
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S001430572200341X
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: European Polymer Journal. 174 111337-
    APA: Guerrero, Federico; De la Flor, Silvia; Ramis, Xavier; Santos, Jose-Ignacio; Serra, Angels (2022). Novel hybrid organic/inorganic poly(thiourethane) covalent adaptable networks. European Polymer Journal, 174(), 111337-. DOI: 10.1016/j.eurpolymj.2022.111337
    Article's DOI: 10.1016/j.eurpolymj.2022.111337
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Materials Chemistry,Organic Chemistry,Physics and Astronomy (Miscellaneous),Polymer Science,Polymers and Plastics
    Vitrimers
    Thermosets
    Poss
    Polyurethane
    Poly(thiourethane)
    Oligomeric silsesquioxane poss
    Nanocomposites
    Kinetics
    Epoxy
    Dielectric-properties
    Click reaction
    Chemistry
    Química
    Polymers and plastics
    Polymer science
    Physics and astronomy (miscellaneous)
    Physics and astronomy (all)
    Organic chemistry
    Odontología
    Materials chemistry
    Materiais
    Interdisciplinar
    General physics and astronomy
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências ambientais
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Astronomia / física
    Arquitetura, urbanismo e design
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