Exploració per autor "Ramis Juan, Xavier"
Ara es mostren els items 135-154 de 154
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Tailor-made thermosets obtained by sequential dual-curing combining isocyanate-thiol and epoxy-thiol click reactions
Gamardella, Francesco; Sabatini, Valentina; Ramis Juan, Xavier; Serra Albet, Maria Àngels (Elsevier, 2019-06-12)
Article
Accés obertIn this work, a new family of thermosets based on thiol-isocyanate-epoxy networks has been prepared via sequential dual-curing methodology where both reactions are activated by temperature. The sequential dual behaviour ... -
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 obertClick 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 ... -
The use of dihydrazides as latent curing agents in diglycidyl ether of bisphenol A coatings
Tomuta, Adrian; Ramis Juan, Xavier; Ferrando Piera, Francesc; Serra Albet, Maria Àngels (2012-05)
Article
Accés restringit per política de l'editorialDihydrazides of different structure were synthesized and tested as curing agents for DGEBA epoxy coatings. By calorimetric studies their latent characteristics were proved and the kinetics of the curing studied. The ... -
The use of lanthanide triflates in the preparation of poly(thiourethane) covalent adaptable networks
Guerrero Ruiz, Federico; Gamardella, Francesco; Ramis Juan, Xavier; De la Flor López, Silvia; Serra Albet, Maria Àngels (Elsevier, 2023-09-22)
Article
Accés obertCovalent adaptable networks (CANs) are new polymeric materials with the mechanical properties of thermosets and the possibility of being recycled like thermoplastics. Poly(thiourethane) networks have demonstrated vitrimeric-like ... -
Thermal curing and photocuring of a DGEBA modified with multiarm star poly(glycidol)-b-poly(e-caprolactone) polymers of different arm lengths
Morancho Llena, José María; Cadenato Matia, Ana María; Ramis Juan, Xavier; Morell, Mireia; Fernández Francos, Xavier; Salla Tarragó, José María; Serra Albet, Maria Àngels (2013-10)
Article
Accés restringit per política de l'editorialThe influence of two multiarm star polymers, hyperbranched poly(glycidol)-b-poly(e-caprolactone) of different arm lengths, on the thermal curing and the photocuring of a diglycidyl ether of bisphenol A epoxy resin ... -
Thermal curing and photocuring of an epoxy resin modified with a hyperbranched polymer
Morancho Llena, José María; Cadenato Matia, Ana María; Ramis Juan, Xavier; Fernández Francos, Xavier; Salla Tarragó, José María (2010-06-01)
Article
Accés restringit per política de l'editorialIn this work we study the influence of a hyperbranched polymer (BOLTORN® H20) on the thermal curing and photocuring of DGEBA. Addition of low amounts of H20 slowed down dynamic thermal curing but further addition accelerated ... -
Thermal curing of an epoxy-anhydride system modified with hyperbranched poly(ethylene imine)s with different terminal groups
Morancho Llena, José María; Fernández Francos, Xavier; Acebo Gorostiza, Cristina; Ramis Juan, Xavier; Salla Tarragó, José María; Serra Albet, Maria Àngels (Springer, 2017-01)
Article
Accés obertNew hyperbranched polymers (HBP) have been synthesized by reaction of a poly(ethylene imine) with phenyl and t-butyl isocyanates. These HBPs have been characterized by 1H-NMR (nuclear magnetic resonance of hydrogen) and ... -
Thermal curing of an epoxy-anhydride system modified with hyperbranched poly(ethylene imine)s with different terminal groups
Morancho Llena, José María; Fernández Francos, Xavier; Acebo Gorostiza, Cristina; Ramis Juan, Xavier; Salla Tarragó, José María; Serra Albet, Maria Àngels (2015)
Comunicació de congrés
Accés restringit per política de l'editorialEpoxy resins are widely used in applications such as adhesives, coatings, electric laminates, encapsulation of semiconductor devices, matrix material for composites, structural components and cryogenic engineering because ... -
Thermoconductive thermosetting composites based on boron nitride fillers and thiol-epoxy matrices
Isarn, Isaac; Ramis Juan, Xavier; Ferrando Piera, Francesc; Serra Albet, Maria Àngels (2018-03-07)
Article
Accés obertIn this work, the effect of the addition of boron nitride (BN) fillers in a thiol-cycloaliphatic epoxy formulation has been investigated. Calorimetric studies put into evidence that the kinetics of the curing has been ... -
Thermomechanical properties and shape-memory behavior of bisphenol a diacrylate-based shape-memory polymers
Santiago Abraira, David Manuel; Flor López, Sílvia de la; Ferrando Piera, Francesc; Ramis Juan, Xavier; Sangermano, Marco (2016-01)
Article
Accés obertA series of acrylate-based shape-memory materials are synthesized from bisphenol A diacrylate monomers as crosslinking agents. Networks are synthesized by keeping constant the content of bisphenol A-based crosslinking agent ... -
Thermosetting materials from eugenol derivatives
Guzman, Dailyn; Serra Albet, Maria Àngels; Ramis Juan, Xavier (Nova Science Publisher, 2019-04)
Capítol de llibre
Accés restringit per política de l'editorialGreen chemistry explores safer ways to prepare new materials from renewable resources. Thermosets are generally prepared from a mixture of monomers, with at least one of them having three or more reactive functions. This ... -
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 obertTo 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 ... -
Thiol-yne/thiol-epoxy hybrid crosslinked materials based on propargyl modified hyperbranched poly(ethyleneimine) and diglycidylether of bisphenol A resins
Acebo Gorostiza, Cristina; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (2016-01-01)
Article
Accés obertA novel curing methodology based on the combination of thiol-yne and thiol-epoxy click reactions has been developed. The curing process consists of a first photoinitiated thiol-yne reaction, followed by a thermal thiol-epoxy ... -
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 obertThe 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 obertA 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 ... -
Toward the recyclability of thermosetting polymers
Gamardella, Francesco; Flor López, Sílvia de la; Ramis Juan, Xavier; Serra Albet, Maria Àngels (De Gruyter, 2022-11-07)
Capítol de llibre
Accés restringit per política de l'editorialPolymers, commonly known with the generic term “plastics,” are nowadays key materials in many industrial sectors and in our daily life. The word “polymer” is derived from the Greek words “polis” (many) and “meros” (part). ... -
Unexpected differences between thermal and photoinitiated cationic curing oa a diglycidyl ether of bisphenol. A modified with a multiarm star poly (styrene)-b-poly (e-caprolactone) polymer
Morancho Llena, José María; Cadenato Matia, Ana María; Ramis Juan, Xavier; Morell, Mireia; Fernández Francos, Xavier; Salla Tarragó, José María; Serra Albet, Maria Àngels (2013-03-18)
Article
Accés obertThe effect of adding a multiarm star poly(styrene)-b-poly("-caprolactone) polymer on the cationic thermal and photoinitiated curing of diglycidyl ether of bisphenol A was studied. This star-polymer decelerated the thermal ... -
UV generation of a muiltifunctional hyperbranched thermal crosslinker to cure epoxy resin
Foix, David; Ramis Juan, Xavier; Serra Albet, Maria Àngels; Sangermano, Marco (Elsevier, 2011-07-07)
Article
Accés restringit per política de l'editorialA new hyperbranched polymer (HBP) was obtained via an iterative synthetic procedure that consists of esterification and thiol-ene click reaction. This polymer was used as a latent multifunctional macroinitiator for the ... -
UV generation of a multifunctional hyperbranched thermal crosslinker to cure epoxy resins
Foix, David; Ramis Juan, Xavier; Serra Albet, Maria Àngels; Sangermano, Marco (Elsevier, 2011-07)
Article
Accés restringit per política de l'editorialA new hyperbranched polymer (HBP) was obtained via an iterative synthetic procedure that consists of esterification and thiol-ene click reaction. This polymer was used as a latent multifunctional macroinitiator for the ... -
Vitrimeric Epoxy-Amine Polyimine Networks Based on a Renewable Vanillin Derivative
Roig Gibert, Adriá; Hidalgo, Pere; Ramis Juan, Xavier; De la Flor López, Silvia; Serra Albet, Maria Àngels (American Chemical Society (ACS), 2022-01-01)
Article
Accés obertA series of bio-based polyimine vitrimers was obtained and characterized. A diimine-diglycidyl monomer (DIDG) was synthesized by condensing vanillin with 4,4'-oxydianiline (ODA) and further glycidylation with epichlorohydrin. ...