Browsing by Subject "Polyesters"
Now showing items 21-40 of 78
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Copoliésteres alifáticos derivados del ácido galactárico diacetalizado
(2012)
Conference lecture
Open Access -
Copolyesters made from 1,4-butanediol, sebacic acid, and D-glucose by melt and enzymatic polycondensation
(2015-03-09)
Article
Open AccessBiotechnologically accessible 1,4-butanediol and vegetal oil-based diethyl sebacate were copolymerized with bicyclic acetalized d-glucose derivatives (Glux) by polycondensation both in the melt at high temperature and in ... -
Development and characterization of multilayer films based on polyhydroxyalkanoates and hydrocolloids
(Wiley, 2016-11-07)
Article
Open AccessNew biodegradable polymeric materials have been developed in order to minimize the environmental impact caused bythe traditional packaging found in the market. Polyhydroxyalkanoates (PHAs) are biopolymers with important ... -
Efectes del plasma corona sobre la tintura de polièster amb colorants catiònics
(Universitat Politècnica de Catalunya, 2014-06-10)
Bachelor thesis
Restricted access - author's decision -
Effect of chain extender and water-quenching on the properties of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) foams for its production by extrusion foaming
(2016-10-01)
Article
Open AccessBacterial polyesters such as polyhydroxyalkanoates (PHAs) are of great interest for a large number of applications both because of their properties and because they come from renewable resources, despite having a higher ... -
Effect of hydroxyapatite nanoparticles on the degradability of random poly(butylene terephthalate-co-aliphatic dicarboxylate)s having a high content of terephthalic units
(2016-07-06)
Article
Open AccessCopolyesters derived from 1,4-butanediol and constituted also of aliphatic and aromatic dicarboxylate units in a molar ratio of 3:7 were synthesized by a two-step polycondensation procedure. Succinic, adipic, and sebacic ... -
Electrohilado de microfibras de poli(éster amida) y poli(éster urea) derivadas de la L-leucina
(Universitat Politècnica de Catalunya, 2018-10-24)
Master thesis
Restricted access - author's decisionMicrofibras de poli(éster amida) y poli(éster urea) – biodegradables y derivadas de αaminoácidos – fueron preparadas e investigadas para contribuir en la investigación de polímeros para biomedicina. Las fibras electrohiladas ... -
Electrospinning de poliesteramidas biodegradables
(Universitat Politècnica de Catalunya, 2010-01-11)
Master thesis (pre-Bologna period)
Open AccessL’electrospinning és una técnica que permet obtener fibres de diàmetres de nanometres fins a micres. Consteix en aplicar una diferencia de potencial en una gota de dissolució de polímer que flueix al llarg del injector. En ... -
"Electrospinning" de mezclas de polilactida y policaprolactona. Control de la liberación de triclosán y de su efecto biocida.
(Universitat Politècnica de Catalunya, 2010-10)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEn este estudio, se prepararon microfibras de los polímeros polilactida y policaprolactona, y también de mezclas de ambos en distintas proporciones. Se determinaron las condiciones óptimas (solvente, potencial, flujo, ... -
Electrospray loading and release of hydrophobic gramicidin in polyester microparticles
(2016)
Article
Restricted access - publisher's policyGramicidin (GA), a very hydrophobic pentadecapeptide with important biological activities (i.e. in addition to its well-known antimicrobial and antibiotic activities, GA has been recently identified as a potent therapeutic ... -
Estudi i desenvolupament d’una plataforma informàtica per l’ anàlisi dels assaigs d'envoltants elèctriques pel departament de qualitat.
(Universitat Politècnica de Catalunya, 2019-06-10)
Bachelor thesis
Restricted access - author's decision
Covenantee: Schneider Electric -
Estudio de la cristalización de copoliésteres derivados de los ácidos azelaico y pimélico
(Universitat Politècnica de Catalunya, 2011-06)
Master thesis (pre-Bologna period)
Open AccessEn este Proyecto de Final de Carrera se aborda el estudio de la síntesis y la cristalización de los poliésteres derivados del 1,9-nonanodiol y de los ácidos azelaicos y/o pimélicos. También se ha estudiado la policondensación ... -
Extrusion foaming of PHB-copolymer: effect of chain extender and cooling system on the cellular structure and properties
(2015)
Conference report
Restricted access - publisher's policyIn this study, we analyse the extrusion foaming capabilities of polyhydroxyalkanoates (PHAs) with endothermic chemical blowing agents (CBAs) based on sodium bicarbonate and citric acid. An epoxy functionalized chain extender ... -
Fully bio-based aromatic–aliphatic copolyesters: poly(butylene furandicarboxylate-co-succinate)s obtained by ring opening polymerization
(2017-01-28)
Article
Open AccessPoly(butylene 2,5-furandicarboxylate-co-succinate) copolyesters (coPBFxSy) have been synthesized by ring opening polymerization (ROP). Cyclic butylene 2,5-furandicarboxylate and butylene succinate oligomer mixtures, to ... -
High Tg bio-based aliphatic polyesters from bicyclic D-mannitol
(2013-03-11)
Article
Restricted access - publisher's policyThe carbohydrate-based diol 2,4:3,5-di- O -methylene- D -mannitol (Manx) has been used to obtain aliphatic polyesters. Manx is a symmetric bicyclic compound consisting of two fused 1,3-dioxane rings and bearing ... -
Isohexide and sorbitol-derived, enzymatically synthesized renewable polyesters with enhanced Tg
(2016-10-10)
Article
Open AccessSugar-based polyesters derived from sorbitol and isohexides were obtained via solvent-free enzymatic catalysis. Pendant hydroxyl groups, coming from the sorbitol units, were present along the polyester backbone, whereas ... -
Isomannide-containing poly(butylene 2,5-furandicarboxylate) copolyesters via ring opening polymerization
(American Chemical Society (ACS), 2018-05-08)
Article
Open AccessCyclic oligomers of isomannide 2,5-furandicarboxylate were synthesized using the high dilution condensation method. A mixture of dimer, trimer, and tetramer species largely enriched in dimer was obtained. These cyclic ... -
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 ... -
Modelización de la situación actual y posibles situaciones futuras del proceso productivo de impresión y laminación de un film de poliéster
(Universitat Politècnica de Catalunya, 2015-04)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEste proyecto estudia el actual sistema productivo de impresión y laminación de un film de poliéster destinado al sector de la alimentación. La finalidad es determinar aspectos como la viabilidad, capacidad de producción, ... -
Modificació de la superfície de teixits de polièster per obtenir el confort permanent
(Universitat Politècnica de Catalunya, 2020-07-14)
Bachelor thesis
Open AccessUn dels teixits actuals més utilitzats en la indústria tèxtil és el polièster (PET), tant per les seves propietats físiques i químiques, com pel seu cost assequible per a tothom. No obstant, és un material hidròfob, per ...
