Exploració per tema "Polymerization"
Ara es mostren els items 1-20 de 42
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A green strategy for the synthesis of poly(ethylene succinate) and its copolyesters via enzymatic ring opening polymerization
(2017-10)
Article
Accés restringit per política de l'editorialPoly(ethylene succinate) (PES) with weight-average molecular weight above 60,000 g mol-1 was efficiently obtained by enzymatic ring opening polymerization of cyclic oligo(ethylene succinate)s c(ES)n, which in turn were ... -
A novel contribution to the modeling of the matting efficiency of aqueous polyurethane dispersions
(2017-08-01)
Article
Accés restringit per política de l'editorialGloss is a critical issue in many applications in the coating industry. Gloss depends on optical and rheological properties of complex mixtures, and estimating gloss from basic properties is still a challenge. In order to ... -
Aplicación de la espectroscopía de infrarrojo para el estudio de procesos de cristalización y polimerización. Aplicación de nuevos materiales derivados de ácido glicólico
(Universitat Politècnica de Catalunya, 2009-11)
Projecte/Treball Final de Carrera
Accés obertEn el presente Proyecto Final de Carrera se realiza la síntesis de las sales de sodio, potasio y cesio del ácido N-cloroacetil-6-aminohexanoico y se estudia su reactividad mediante espectroscopia de infrarrojo de reflexión ... -
Aromatic ionene topology and counterion-tuned gelation of acidic aqueous solutions
(2017-04-28)
Article
Accés obertUnusual gelation of acidic solutions was achieved using polycations bearing quaternary ammonium moieties. These ionene polymers are based on a disubstituted phenylene dibenzamide core, which allows the construction of ... -
Bio-based aliphatic polyesters from aliphatic diacids and bicyclic alditols: A comparative study
(2016)
Comunicació de congrés
Accés obertIn this work we have prepared and compared the thermal and mechanical properties of aliphatic polyesters made from aliphatic diacids with different polymethylene chain lengths (2, 4, 6, 8) and three bicyclic sugar derived ... -
Blocky poly(epsilon-caprolactone-co-butylene 2,5-furandicarboxylate) copolyesters via enzymatic ring opening polymerization
(2018-02-01)
Article
Accés obertCyclic oligo(butylene 2,5-furandicarboxylate) and e-caprolactone were copolymerized in bulk at 130-150 ºC by enzymatic ring opening polymerization using CALB as catalyst. Copolyesters within a wide range of compositions ... -
Building an antifouling zwitterionic coating on urinary catheters using an enzymatically triggered bottom-up approach
(2014-06-23)
Article
Accés restringit per política de l'editorialCatheter associated urinary tract infections are common during hospitalization due to the formation of bacterial biofilms on the indwelling device. In this study, we report an innovative biotechnology-based approach for ... -
Cálculo y diseño de una columna de destilación fraccionada en continuo para un sistema multicomponente
(Universitat Politècnica de Catalunya, 2016-09-05)
Treball Final de Grau
Accés restringit per acord de confidencialitat -
Carbohydrate-based copolyesters made from bicyclic acetalized galactaric acid
(2012-04-15)
Article
Accés restringit per política de l'editorialMixtures of the dimethyl esters of adipic acid and 2,3:4,5-di-O-methylene-galactaric acid (Galx) were made to react in the melt with either 1,6-hexanediol or 1,12-dodecanediol to produce linear polycyclic copolyesters with ... -
Controlling the morphology of poly(N -cyanoethylpyrrole)
(2012-04-26)
Article
Accés restringit per política de l'editorialThe morphology of poly(N-cyanoethylpyrrole) has been controlled through the polymerization process. This polymer has been prepared by anodic polymerization, chemical oxidative polymerization in emulsion medium, and ... -
Copolyesters made from 1,4-butanediol, sebacic acid, and D-glucose by melt and enzymatic polycondensation
(2015-03-09)
Article
Accés obertBiotechnologically 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 ... -
Disseny d'un minireactor de policondensació
(Universitat Politècnica de Catalunya, 2014-09)
Projecte/Treball Final de Carrera
Accés obertLa 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 ... -
Epoxidació de productes naturals
(Universitat Politècnica de Catalunya, 2015-05)
Treball Final de Grau
Accés obertL'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)
Treball Final de Grau
Accés restringit per decisió de l'autorEste 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)
Projecte/Treball Final de Carrera
Accés obertPolyolefins 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)
Projecte Final de Màster Oficial
Accés obertEn 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
Accés obertRenewable 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 ... -
Isocyanate toughened pCBT: reactive blending and tensile properties
(2013-02-01)
Article
Accés obertCyclic 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)
Text en actes de congrés
Accés restringit per política de l'editorialOne 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
Accés restringit per política de l'editorialMetal-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 ...
