Ara es mostren els items 21-37 de 37

    • Kinetics analysis and simulation of sequential epoxy dual-curing systems with independent thermal activation 

      Santín Serrano, David; Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier (2019-03-01)
      Article
      Accés obert
      The curing kinetics of a sequential dual-curing system based on an off-stoichiometric amine-epoxy formulation with intermediate latent reactivity has been analyzed. The first curing stage is an epoxy-amine polycondensation ...
    • Latent curing of epoxy-thiol thermosets 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier (Elsevier, 2017-05-05)
      Article
      Accés obert
      Epoxy-thiol curing is a click reaction which allows quantitative yield of the end products. The base-catalyzed reaction is rapid at low temperatures so it is most often desirable to harness reactivity by using latent ...
    • New allyl-functional catalytic comonomers for sequential thiol-Michael and radical thiol-ene reactions 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (Elsevier, 2018-02-28)
      Article
      Accés obert
      Soft poly(thioether) thermosets have been synthesized by employing a two-step curing procedure based on click chemistry. The first stage of curing is a thiol-Michael addition between acrylates (or methacrylates) and thiols ...
    • Optimization and testing of hybrid 3D printing vitrimer resins 

      Casado Gómez, Jaime; Konuray, Ali Osman; Benet, Gerard; Fernández Francos, Xavier; Morancho Llena, José María; Ramis Juan, Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-24)
      Article
      Accés obert
      The quality of photocure-based 3D printing greatly depends on the properties of the photoresin. There are still many challenges to be overcome at the material level before such additive manufacturing methods dominate the ...
    • Preparation and characterization of dual-curable off-stoichiometric amine-epoxy thermosets with latent reactivity 

      Konuray, Ali Osman; Areny, Núria; Morancho Llena, José María; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ramis Juan, Xavier (Elsevier, 2018-06-20)
      Article
      Accés obert
      A new family of dual-curable poly(hydroxyamine)-poly(ether) thermosets based on off-stoichiometric amine-epoxy formulations has been prepared and characterized. The first curing stage was a selflimiting click epoxy-amine ...
    • Recyclable dual-curing thiol-isocyanate-epoxy vitrimers with sequential relaxation profiles 

      Moradi, Sasan; Fernández Francos, Xavier; Konuray, Ali Osman; Ramis Juan, Xavier (Elsevier, 2023-09-11)
      Article
      Accés obert
      Two series of poly(thiourethane)s-poly(thiol-epoxy) hybrids were prepared from dual-curing, stoichiometric thiol:isocyanate:epoxy mixtures. 1-methylimidazole (MI) was used as initiator for the thiol-isocyanate and thiol-epoxy ...
    • Sequential curing of amine-acrylate-methacrylate mixtures based on selective aza-Michael addition followed by radical photopolymerization 

      Konuray, Ali Osman; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ramis Juan, Xavier (2016-11)
      Article
      Accés obert
      Dual curing systems find various uses in industry with the process flexibility they provide which allows tailoring properties at different curing stages in accordance with application requirements. A safe and efficient ...
    • Sequential curing of off-stoichiometric thiol-epoxy thermosets with a custom-tailored structure 

      Fernández Francos, Xavier; Konuray, Ali Osman; Belmonte, Alberto; de la Flor López, Silvia; Serra Albet, Maria Àngels; Ramis Juan, Xavier (2016-01-01)
      Article
      Accés obert
      A new dual-curing system based on sequential thiol-epoxy click polycondensation and epoxy anionic homopolymerization was studied. Formulations of diglycidyl ether of bisphenol A and trimethylolpropane tris(3-mercaptopropionate) ...
    • Sequential curing of thiol-acetoacetate-acrylate thermosets by latent Michael addition reactions 

      Konuray, Ali Osman; Liendo Castillo, Freddy Jesus; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Sangermano, Marco; Ramis Juan, Xavier (Elsevier, 2017-03-24)
      Article
      Accés obert
      Thiol-acetoacetate-acrylate ternary dual-curing thermosets were prepared by a sequential process consisting of thiol-Michael addition to acrylates at room temperature followed by Michael addition of acetoacetates to acrylates ...
    • Sequential dual curing by selective Michael addition and free radical polymerization of acetoacetate-acrylate-methacrylate mixtures 

      Konuray, Ali Osman; Ruiz, Anna; Morancho Llena, José María; Salla Tarragó, José María; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ramis Juan, Xavier (2018-01)
      Article
      Accés obert
      A new family of poly(keto ester)-poly(methacrylate) thermosets based on off-stoichiometric acetoacetate-acrylate/methacrylate formulations has been prepared and characterized. The first stage of curing is a self-limiting ...
    • State of the art in dual-curing acrylate systems 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (2018-02-12)
      Article
      Accés obert
      Acrylate chemistry has found widespread use in dual-curing systems over the years. Acrylates are cheap, easily handled and versatile monomers that can undergo facile chain-wise or step-wise polymerization reactions that ...
    • Stress-relaxing thermosets with easily regulated bond exchange kinetics 

      Konuray, Ali Osman; Moradi, Sasan; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ramis Juan, Xavier; Morancho Llena, José María (2022)
      Comunicació de congrés
      Accés obert
      We have carried out stress-relaxation experiments on poly(acrylate) and poly(thiol-ene) based thermosets prepared from in-house synthesized epoxy-acid adducts with acrylate (for the former) and ene functionalities (for the ...
    • Structural design of CANs with fine-tunable relaxation properties: a theoretical framework based on network structure and kinetics modeling 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier (American Chemical Society, 2023-06-23)
      Article
      Accés obert
      In this work, we present a model capable of reproducing the stress relaxation dynamics of a wide range of relaxation processes in covalent adaptable networks (CANs) produced by stepwise polymerization. The proposed model ...
    • The use of click-type reactions in the preparation of thermosets 

      Konuray, Ali Osman; Fernández Francos, Xavier; Flor López, Sílvia de la; Ramis Juan, Xavier; Serra Albet, Maria Àngels (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-09)
      Article
      Accés obert
      Click chemistry has emerged as an effective polymerization method to obtain thermosets with enhanced properties for advanced applications. In this article, commonly used click reactions have been reviewed, highlighting ...
    • Thiol-Ene Networks with Tunable Dynamicity for Covalent Adaptation 

      Konuray, Ali Osman; Moradi, Sasan; Roig, Adrià; Fernández Francos, Xavier; Ramis Juan, Xavier (American Chemical Society (ACS), 2022-01-01)
      Article
      Accés obert
      To be fully recyclable, covalent adaptable networks must ultimately be able to overcome all topological restrictions and flow. By using a statistically based method, it was shown that the extent of stress relaxation in ...
    • Time-temperature-transformation (TTT) diagram of a dual-curable off-stoichiometric epoxy-amine system with latent reactivity 

      Areny, Núria; Konuray, Ali Osman; Fernández Francos, Xavier; Salla Tarragó, José María; Morancho Llena, José María; Ramis Juan, Xavier (2018-08-10)
      Article
      Accés obert
      The time-temperature-transformation (TTT) diagram of the curing an off-stoichiometric amine-epoxy formulation with intermediate latent reactivity has been elaborated. The first curing stage is an epoxy-amine polycondensation ...
    • Time-temperature-transformation (TTT) diagram of dual-curable epoxy thermosets obtained via two sequential epoxy-amine condensations 

      Konuray, Ali Osman; Salla Tarragó, José María; Morancho Llena, José María; Fernández Francos, Xavier; García Álvarez, Montserrat; Ramis Juan, Xavier (2019-08-01)
      Article
      Accés obert
      A simple and robust strategy to generate time-temperature-transformation (TTT) diagrams for dual-curable thermosets is presented. TTT diagram is built for a dual-curable amine-epoxy formulation. Both curing stages are ...