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Now showing items 1-20 of 34

    • 3D printable hybrid acrylate-epoxy dynamic networks 

      Casado Gómez, Jaime; Konuray, Ali Osman; Roig Gibert, Adriá; Fernández Francos, Xavier; Ramis Juan, Xavier (Elsevier, 2022-06)
      Article
      Open Access
      Polymer networks with dynamic bonds, also known as covalent adaptable networks (CANs) combine the superior mechanical properties and chemical resistance of thermosets with the ability to be reprocessed, a feat formerly ...

    • Acetoacetate based thermosets prepared by dual-Michael addition reactions 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-01)
      Article
      Open Access
      A novel set of dual-curable multiacetoacetate-multiacrylate-divinyl sulfone ternary materials with versatile and manipulable properties are presented. In contrast to common dual-curing systems, the first stage polymer ...

    • Cost-effectively 3d-printed rigid and versatile interpenetrating polymer networks 

      Konuray, Ali Osman; Bonada Bo, Jordi; Tercjak, Agnieszka; Fabregat Sanjuan, Albert; Fernández Francos, Xavier; Ramis Juan, Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2021-08-02)
      Article
      Open Access
      Versatile acrylate–epoxy hybrid formulations are becoming widespread in photo/thermal dual-processing scenarios, especially in 3D printing applications. Usually, parts are printed in a stereolithography or digital light ...

    • Curado “Click” secuencial de mezclas tiol-acetoacetato-acrilato, catalizada por una fotobase latente 

      Ramis Juan, Xavier; Konuray, Ali Osman; Liendo Castillo, Freddy Jesus; Fernández Francos, Xavier; Morancho Llena, José María; Salla Tarragó, José María; Serra Albet, Maria Àngels (2016)
      Conference lecture
      Restricted access - publisher's policy

    • Curing and thermomechanical properties of off-stoichiometric anhydride-epoxy thermosets 

      Morancho Llena, José María; Ramis Juan, Xavier; Fernández Francos, Xavier; Salla Tarragó, José María; Konuray, Ali Osman; Serra Albet, Maria Àngels (Springer, 2019-11)
      Article
      Open Access
      n the present work, we report the preparation and characterization of a new family of thermosets based on off-stoichiometric anhydride–epoxy formulations in the presence of an anionic initiator. Diglycidyl ether of bisphenol ...

    • Curing kinetics and characterization of dual-curable thiol-acrylate-epoxy thermosets with latent reactivity 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier (2018-01)
      Article
      Open Access
      A new dual-curing scheme was developed for thiol-acrylate-epoxy mixtures. A photo-initiated latent catalytic system was used to carry out thiol-acrylate Michael addition at 35 °C (Stage 1) followed by thiol-epoxy click ...

    • Curing kinetics of acrylate-based and 3D printable IPNs 

      Konuray, Ali Osman; Salla Tarragó, José María; Morancho Llena, José María; Fernández Francos, Xavier; García Álvarez, Montserrat; Ramis Juan, Xavier (2020-10-01)
      Article
      Open Access
      In this work, the kinetics of curing of a new family of interpenetrating polymer networks (IPNs) obtained by co-formulation of a photocurable acrylic resin with a thermocurable epoxy/anhydride mixture is studied. The first ...

    • Curing kinetics of dually-processed acrylate-epoxy 3D printing resins 

      Konuray, Ali Osman; Morancho Llena, José María; Fernández Francos, Xavier; García Álvarez, Montserrat; Ramis Juan, Xavier (2021-07-01)
      Article
      Open Access
      In this work, the curing kinetics of a new ternary acrylate/epoxy/anhydride thermoset system which is used for dual-curing 3D-printing applications is studied. The first curing stage is an acrylate free-radical photopolymerization ...

    • Curing of off-stoichiometric amine–epoxy thermosets 

      Morancho Llena, José María; Ramis Juan, Xavier; Fernández Francos, Xavier; Salla Tarragó, José María; Konuray, Ali Osman; Serra Albet, Maria Àngels (Springer, 2018-07)
      Article
      Open Access
      The kinetics of the epoxy–amine polycondensation and the epoxy homopolymerization in off-stoichiometric epoxy/amine formulations with excess of epoxy groups, and in the presence of an anionic initiator have been investigated. ...

    • Design and analysis of dual-curing systems 

      Konuray, Ali Osman (Universitat Politècnica de Catalunya, 2018-09-17)
      Doctoral thesis
      Open Access
      Dual-curing processing is a method to prepare thermoset materials through two polymerization reactions carried out simultaneously or sequentially. In these processes, a firm understanding of reaction mechanisms enables ...

    • Determinació experimental de la calor específica d'un brou 

      Morancho Llena, José María; Ramis Juan, Xavier; Fernández Francos, Xavier; Konuray, Ali Osman (2021-10-04)
      Research report
      Restricted access - confidentiality agreement
      S'ha determinat la capacitat calorífica d'un brou demanat per LLUÍS JANÉ BUSQUETS LABORATORI D'ANÀLISI S.L. a les temperatures de 60, 65 i 70 ºC. L'assaig s'ha fet mitjançant un calorímetre DSC3+ de Mettler. La determinació ...

    • Dual curing of an epoxy resin with dicarboxylic acids 

      Morancho Llena, José María; Ramis Juan, Xavier; Fernández Francos, Xavier; Konuray, Ali Osman; Salla Tarragó, José María; Serra Albet, Maria Àngels (Springer, 2020-03-18)
      Article
      Restricted access - publisher's policy
      In this work, we have studied the preparation and characterization of a new family of thermosets based on off-stoichiometric diacid-epoxy formulations in the presence of 1-methylimidazole as initiator. Tri-glycidyl para-amino ...

    • Dual-curable stereolithography resins for superior thermomechanical properties 

      Konuray, Ali Osman; Di Donato, Fabio; Sangermano, Marco; Bonada Bo, Jordi; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ramis Juan, Xavier (2020-09-01)
      Article
      Open Access
      Stereolithography (SL) stands out as a relatively fast additive manufacturing method to produce thermoset components with high resolutions. The majority of SL resins consist of acrylate monomers which result in materials ...

    • Dual-curable vitrimers for 3d-printing 

      Romano, Angelo; Konuray, Ali Osman; Roppolo, Ignazio; Sangermano, Marco; Fernández-Francos, Xavier; Ramis Juan, Xavier (2021)
      Conference lecture
      Open Access
      3D-printed objects can greatly benefit from the introduction of molecular structure undergoing dynamic bond exchange [1] or the use dual-curing processing [2], leading to a significant enhancement of mechanical properties ...

    • Enhancement of 3D-printable materials by dual-curing procedures 

      Fernández Francos, Xavier; Konuray, Ali Osman; Ramis Juan, Xavier; Serra Albet, Maria Àngels; Flor López, Sílvia de la (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-01)
      Article
      Open Access
      Dual-curing thermosetting systems are recently being developed as an alternative to conventional curing systems due to their processing flexibility and the possibility of enhancing the properties of cured parts in single- ...

    • Epoxy Doped, Nano-scale Phase-separated Poly-Acrylates with Potential in 3D Printing 

      Konuray, Ali Osman; Bonada Bo, Jordi; Fernández Francos, Xavier; Ramis Juan, Xavier (2021-01-01)
      Article
      Open Access
      An efficient method to improve the mechanical performance of a commercially available photocure resin is described wherein the resin is modified with a mixture of a cycloaliphatic epoxy and an anhydride curing agent. ...

    • Hard epoxy thermosets obtained via two sequential epoxy-amine condensations 

      Konuray, Ali Osman; García, Aina; Morancho Llena, José María; Fernández Francos, Xavier; Serra Albet, Maria Àngels; Ferrando Piera, Francesc; García Álvarez, Montserrat; Ramis Juan, Xavier (Elsevier, 2019-07-01)
      Article
      Open Access
      A new family of dual-curable poly(ß-hydroxyamine ether) thermosets based on amine-epoxy formulations has been prepared and characterized. Both curing stages consist in an epoxy-amine polycondensation, each having different ...

    • 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
      Open Access
      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
      Open Access
      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
      Open Access
      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 ...