Articles producció científica> Enginyeria Mecànica

Bio-based epoxy shape-memory thermosets from triglycidyl phloroglucinol

  • Dades identificatives

    Identificador: imarina:6232138
    Autors:
    Santiago, DavidGuzman, DailynFerrando, FrancescSerra, AngelsDe la Flor, Silvia
    Resum:
    © 2020 by the authors. A series of bio-based epoxy shape-memory thermosetting polymers were synthesized starting from a triglycidyl phloroglucinol (3EPOPh) and trimethylolpropane triglycidyl ether (TPTE) as epoxy monomers and a polyetheramine (JEF) as crosslinking agent. The evolution of the curing process was studied by differential scanning calorimetry (DSC) and the materials obtained were characterized by means of DSC, thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), stress-strain tests, and microindentation. Shape-memory properties were evaluated under free and totally constrained conditions. All results were compared with an industrial epoxy thermoset prepared from standard diglycidyl ether of Bisphenol A (DGEBA). Results revealed that materials prepared from 3EPOPh were more reactive and showed a tighter network with higher crosslinking density and glass transition temperatures than the prepared from DGEBA. The partial substitution of 3EPOPh by TPTE as epoxy comonomer caused an increase in the molecular mobility of the materials but without worsening the thermal stability. The shape-memory polymers (SMPs) prepared from 3EPOPh showed good mechanical properties as well as an excellent shape-memory performance. They showed almost complete shape-recovery and shape-fixation, fast shape-recovery rates, and recovery stress up to 7 MPa. The results obtained in this study allow us to conclude that the triglycidyl phloroglucinol derivative of eugenol is a safe and environmentally friendly alternative to DGEBA for preparing thermosetting shape-memory polymers.
  • Altres:

    Autor segons l'article: Santiago, David; Guzman, Dailyn; Ferrando, Francesc; Serra, Angels; De la Flor, Silvia
    Departament: Enginyeria Mecànica
    Autor/s de la URV: De la Flor Lopez, Silvia / Ferrando Piera, Francesc / Serra Albet, Maria Angels / Serra Masdeu, Anna Isabel Maria
    Paraules clau: Temperature Shape-memory polymers Resin Renewable resources Progress Network structure Epoxy Bio-polymers renewable resources epoxy bio-polymers
    Resum: © 2020 by the authors. A series of bio-based epoxy shape-memory thermosetting polymers were synthesized starting from a triglycidyl phloroglucinol (3EPOPh) and trimethylolpropane triglycidyl ether (TPTE) as epoxy monomers and a polyetheramine (JEF) as crosslinking agent. The evolution of the curing process was studied by differential scanning calorimetry (DSC) and the materials obtained were characterized by means of DSC, thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), stress-strain tests, and microindentation. Shape-memory properties were evaluated under free and totally constrained conditions. All results were compared with an industrial epoxy thermoset prepared from standard diglycidyl ether of Bisphenol A (DGEBA). Results revealed that materials prepared from 3EPOPh were more reactive and showed a tighter network with higher crosslinking density and glass transition temperatures than the prepared from DGEBA. The partial substitution of 3EPOPh by TPTE as epoxy comonomer caused an increase in the molecular mobility of the materials but without worsening the thermal stability. The shape-memory polymers (SMPs) prepared from 3EPOPh showed good mechanical properties as well as an excellent shape-memory performance. They showed almost complete shape-recovery and shape-fixation, fast shape-recovery rates, and recovery stress up to 7 MPa. The results obtained in this study allow us to conclude that the triglycidyl phloroglucinol derivative of eugenol is a safe and environmentally friendly alternative to DGEBA for preparing thermosetting shape-memory polymers.
    Àrees temàtiques: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2073-4360
    Adreça de correu electrònic de l'autor: angels.serra@urv.cat annaisabel.serra@urv.cat f.ferrando@urv.cat silvia.delaflor@urv.cat
    Identificador de l'autor: 0000-0003-1387-0358 0000-0001-9353-7154 0000-0003-4450-2734 0000-0002-6851-1371
    Data d'alta del registre: 2024-11-02
    Volum de revista: 12
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2073-4360/12/3/542
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Polymers. 12 (3): 542-
    Referència de l'ítem segons les normes APA: Santiago, David; Guzman, Dailyn; Ferrando, Francesc; Serra, Angels; De la Flor, Silvia (2020). Bio-based epoxy shape-memory thermosets from triglycidyl phloroglucinol. Polymers, 12(3), 542-. DOI: 10.3390/polym12030542
    DOI de l'article: 10.3390/polym12030542
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2020
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Chemistry (Miscellaneous),Polymer Science,Polymers and Plastics
    Temperature
    Shape-memory polymers
    Resin
    Renewable resources
    Progress
    Network structure
    Epoxy
    Bio-polymers
    renewable resources
    epoxy
    bio-polymers
    Polymers and plastics
    Polymer science
    Odontología
    General chemistry
    Farmacia
    Engenharias ii
    Ciências biológicas ii
    Chemistry (miscellaneous)
    Chemistry (all)
    Biotecnología
    Astronomia / física
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