Browsing by Subject "Polymerization"
Now showing items 21-40 of 72
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Development of an innovative UV polymerization process for glass/polyester composite and process monitoring by embedding of piezoelectric transducers
(Universitat Politècnica de Catalunya, 2021-10-14)
Master thesis
Restricted access - author's decisionFibre-reinforced polymer matrix composites (GFRP, CFRP, etc.) are becoming increasingly important in many manufacturing processes. In this regard and considering that one of the essential elements to control in any production ... -
Differentiation between copal and amber by their structure and thermal behaviour
(Springer, 2023-12)
Article
Open AccessThe relationships between the polymerization related to structure and the composition of different types of natural resins were determined. Analyses were carried out by Fourier transform infrared spectroscopy (FTIR), ... -
Disseny d'un minireactor de policondensació
(Universitat Politècnica de Catalunya, 2014-09)
Master thesis (pre-Bologna period)
Open AccessLa problemàtica en les reaccions de policondensació, és que l'equilibri entre els reactius i els productes és establert ràpidament, i per tant, la producció del producte desitjat , un polièster, s'atura. Es planteja la ... -
Dual curing of an epoxy resin with dicarboxylic acids
(Springer, 2020-03-18)
Article
Restricted access - publisher's policyIn 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
(2020-09-01)
Article
Open AccessStereolithography (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 ... -
Effect of surface charge on surface-initiated atom transfer radical polymerization from cellulose nanocrystals in aqueous media
(2016-04-11)
Article
Open AccessCellulose nanocrystals (CNCs) with different charge densities were utilized to examine the role of electrostatic interactions on surface-initiated atom transfer radical polymerization (SI-ATRP) in aqueous media. To this ... -
Epoxidació de productes naturals
(Universitat Politècnica de Catalunya, 2015-05)
Bachelor thesis
Open AccessL'esgotament del petroli ha generat un gran interès científic i econòmic en l'industria petroquímica per disminuir la dependència dels productes obtinguts a partir d'aquesta matèria primera. Els recursos naturals renovables, ... -
Estudio experimental para la obtención y caracterización de compuestos formados por polímero conductor y óxido metálico para aplicaciones eléctricas
(Universitat Politècnica de Catalunya, 2017-01-10)
Bachelor thesis
Restricted access - author's decisionEste proyecto estudia las propiedades eléctricas de las películas de materiales compuestos a partir de la electropolimerización de soluciones formadas a partir del monómero EDOT (3,4-etilendioxitiofeno) con adición de ... -
Ethylene polymerization and polyethylene functionalization
(Universitat Politècnica de Catalunya / Centre National de la Recherche Scientifique, 2010)
Master thesis (pre-Bologna period)
Open AccessPolyolefins have become ubiquitous and are large volume commodity materials. Of current interest is the preparation of speciality polymers incorporating polyethylene (PE), which often requires polymer chain-end manipulation. ... -
Explorant noves vies per a la polimerització d'àcids grassos: Tiolactones
(Universitat Politècnica de Catalunya, 2012-02)
Master thesis
Open AccessEn la societat actual hi ha un interès creixent en buscar alternatives al petroli, centrantse en les fonts renovables com a productes de partida per a la síntesi de polímers. Però en la consciència actual de química verda ... -
Green and selective polycondensation methods toward linear sorbitol-based polyesters: enzymatic versus organic and metal-based catalysis
(2016-08-23)
Article
Open AccessRenewable polyesters derived from a sugar alcohol (i.e., sorbitol) were synthesized by solvent-free polycondensation. The aim was to prepare linear polyesters with pendant hydroxyl groups along the polymer backbone. The ... -
Harnessing disulfide and transesterification bond exchange reactions for recyclable and reprocessable 3D-printed vitrimers
(2024-02-01)
Article
Open AccessTwo new vitrimeric materials have been studied for potential additive manufacturing applications such as 3D- printing. A monomer containing disulfide bonds and ß-hydroxyesters was easily synthesized from two low- cost and ... -
Hydrogels for flexible and compressible free standing cellulose supercapacitors
(Elsevier, 2019-09-01)
Article
Open AccessCellulose-based supercapacitors display important advantages in comparison with devices fabricated with other materials, regarding environmental friendliness, flexibility, cost and versatility. Recent progress in the field ... -
ICTAC Kinetics Committee recommendations for analysis of thermal polymerization kinetics
(Elsevier, 2022-08-01)
Article
Open AccessThe present recommendations have been developed by the Kinetics Committee of the International Confederation for Thermal Analysis and Calorimetry (ICTAC). The recommendations provide guidance on kinetic analysis of thermal ... -
Ionic liquid/ZnO assisted preparation of high barrier cellulose nanocomposite films by in situ ring-opening polymerization of lactide monomers
(Springer, 2023-01-03)
Article
Open AccessCellulose-based composites have aroused increasing interest as potential replacements for fossil fuel-based plastics. In this work, transparent cellulose-grafted-PLA nanocomposite films were prepared by grafting polylactide ... -
Isocyanate toughened pCBT: reactive blending and tensile properties
(2013-02-01)
Article
Open AccessCyclic butylene terephthalate oligomers (CBT) were reacted in a ring-opening polymerization with three types of isocyanates: a bifunctional aromatic type, a bifunctional aliphatic type and a polymeric aromatic isocyanate. ... -
Low-temperature plasma treatments in the design of polypropylene surgical meshes for hernia repair
(2016)
Conference report
Restricted access - publisher's policyOne of the new trends in textile biomaterials research is to deliver active compounds locally in the surgical site from the medical device. One way to manage post-operatory infections associated with mesh implants in ... -
Metal-free catalyzed ring-opening polymerization and block copolymerization of ¿-pentadecalactone using amino-ended initiators
(Elsevier, 2018-11-01)
Article
Open AccessMetal-free catalysis was successfully applied to polymerize ¿-pentadecalactone (PDL) by ring-opening polymerization (ROP) using several amino-ended initiators, namely hexylamine, allylamine and O,O'-bis(3-aminopropyl)diethylene ... -
Modelado matemático del proceso de polimerización en masa de metacrilato de metilo utilizando iniciadores multifuncionales cíclicos
(Universitat Politècnica de Catalunya, 2017-07-10)
Master thesis
Restricted access - author's decision -
Modificación de resinas epoxi con estructuras dendríticas de tipo polímeros estrella
(Universitat Politècnica de Catalunya, 2012-07)
Master thesis
Restricted access - author's decisionLas resinas epoxi se encuentran entre los materiales termoestables más importantes que se utilizan en una gran variedad de aplicaciones tales como adhesivos, matrices para materiales compuestos, recubrimientos de superficies ...
