Exploració per tema "Polièsters"

Ara es mostren els items 21-40 de 56

    • Electrospray loading and release of hydrophobic gramicidin in polyester microparticles 

      Maione, Silvana; Valle Mendoza, Luis Javier del; Pérez Madrigal, Mª del Mar; Cativiela, Carlos; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2016)
      Article
      Accés restringit per política de l'editorial
      Gramicidin (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 ...

    • Extrusion foaming of PHB-copolymer: effect of chain extender and cooling system on the cellular structure and properties 

      Ventura Casellas, Heura; Rodríguez-Pérez, Miguel Ángel; Ardanuy Raso, Mònica (2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In 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 

      Morales Huerta, Juan Carlos; Batista Ciulik, Claudio; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (2017-01-28)
      Article
      Accés obert
      Poly(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 

      Lavilla Aguilar, Cristina; Alla Bedahnane, Abdelilah; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (2013-03-11)
      Article
      Accés restringit per política de l'editorial
      The 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 ...

    • Hydrolizable aromatic copolyesters of p-dioxanone 

      Giammanco, Giuseppe; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Alla Bedahnane, Abdelilah; Muñoz Guerra, Sebastián (2010-09-13)
      Article
      Accés restringit per política de l'editorial
      Entropically driven ring-opening copolymerization of mixtures of a fraction of cyclic oligo(hexamethylene terephthalate)s composed of cycle sizes from 2 to 5 and p-dioxanone was used to prepare random copolyesters covering ...

    • Hydroxyl-functionalized amphiphilic triblock copolyesters made of tartaric and lactic acids: Synthesis and nanoparticle formation 

      Zakharova, Elena; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; León Cavanillas, Salvador; Muñoz Guerra, Sebastián (2018-05-01)
      Article
      Accés obert
      Bio-based triblock copolyesters were synthesized by ring-opening polymerization of l-lactide in solution using a hydroxyl-ended polytartrate as di-functional macroinitiator. This telechelic polyester with a Mn about ...

    • Isohexide and sorbitol-derived, enzymatically synthesized renewable polyesters with enhanced Tg 

      Gustini, Liliane; Lavilla, Cristina; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián; Koning, Cor (2016-10-10)
      Article
      Accés obert
      Sugar-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 

      Morales Huerta, Juan Carlos; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; León Cavanillas, Salvador; Muñoz Guerra, Sebastián (American Chemical Society (ACS), 2018-05-08)
      Article
      Accés obert
      Cyclic 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 ...

    • Isothermal crystallization study on a biodegradable segmented copolymer constituted by glycolide and trimethylene carbonate units 

      Diaz Celorio, Elena; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2010-04-05)
      Article
      Accés restringit per política de l'editorial
      The isothermal crystallization behavior of a segmented copolymer constituted by hard blocks of polyglycolide and soft segments derived from the copolymerization of glycolide and trimethylene carbonate was investigated. ...

    • Modificació de la superfície de teixits de polièster per obtenir el confort permanent 

      Guirado Rovira, Yolanda (Universitat Politècnica de Catalunya, 2020-07-14)
      Treball Final de Grau
      Accés obert
      Un 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 ...

    • Modification of properties of poly(butylene succinate) by copolymerization with tartaric acid-based monomers 

      Zakharova, Elena; Lavilla, Cristina; Alla Bedahnane, Abdelilah; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (2014-12-01)
      Article
      Accés restringit per política de l'editorial
      The two cyclic acetals, 2,3-di-O-methylene-l-threitol and dimethyl 2,3-di-O-methylene-l-threarate, were used for the synthesis of two series of PBS copolyesters differing in which unit, butylene or succinate, was replaced, ...

    • Multifunctional ternary drug-loaded electrospun scaffolds 

      Llorens Domenjó, Elena; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi (2016-02-20)
      Article
      Accés obert
      Multifunctional electrospun scaffolds were prepared from two polylactide (PLA) grades having slightly different d-lactide content (4.2 wt % and 2.0 wt %). Triclosan (TCS), ketoprofen (KTP), and p-coumaric acid (CUM) were ...

    • New poly(ester urea) derived from L-leucine: Electrospun scaffolds loaded with antibacterial drugs and enzymes 

      Díaz Andrade, Angélica María; Valle Mendoza, Luis Javier del; Tugushi, David; Katsarava, Ramaz; Puiggalí Bellalta, Jordi (Elsevier, 2015-01-01)
      Article
      Accés obert
      Electrospun scaffolds from an amino acid containing poly(ester urea) (PEU) were developed as promising materials in the biomedical field and specifically in tissue engineering applications. The selected poly(ester urea) ...

    • Partially renewable copolyesters prepared from acetalized d-glucitol by solid-state modification of poly(butylene terephthalate) 

      Gubbels, Erik; Lavilla, Cristina; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Noordover, Bart A. J.; Koning, Cor E.; Muñoz Guerra, Sebastián (2014-01-15)
      Article
      Accés restringit per política de l'editorial
      The backbone of poly(butylene terephthalate) (PBT) was modified with 2,4:3,5-di- O -methylene- D -glucitol (Glux) using solid-state modification (SSM). The obtained copolyest- ers proved to have a non-random overall ...

    • Partially renewable poly(butylene 2,5-furandicarboxylate-co-isophthalate) copolyesters obtained by ROP 

      Morales Huerta, Juan Carlos; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (Multidisciplinary Digital Publishing Institute (MDPI), 2018-12-01)
      Capítol de llibre
      Accés obert
      Cyclic butylene furandicarboxylate (c(BF)n) and butylene isophthalate (c(BI)n) oligomers obtained by high dilution condensation reaction were polymerized in bulk at 200 ¿C with Sn(Oct)2 catalyst via ring opening polymerization ...

    • Partially renewable poly(butylene 2,5-furandicarboxylate-co-isophthalate) copolyesters obtained by ROP 

      Morales Huerta, Juan Carlos; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (Multidisciplinary Digital Publishing Institute (MDPI), 2018-04-28)
      Article
      Accés obert
      Cyclic butylene furandicarboxylate (c(BF)n) and butylene isophthalate (c(BI)n) oligomers obtained by high dilution condensation reaction were polymerized in bulk at 200 °C with Sn(Oct)2 catalyst via ring opening polymerization ...

    • Perforated polyester nanomebranes as templates of electroactive and robust free-standing films 

      Molina García, Brenda Guadalupe; Cuesta, Sergi; Puiggalí Jou, Anna; Valle Mendoza, Luis Javier del; Armelín Diggroc, Elaine Aparecida; Alemán Llansó, Carlos (Elsevier, 2019-05-01)
      Article
      Accés obert
      Robust and flexible free-standing films made of spin-coated poly(lactic acid) (PLA) and poly(3,4-ethylenedioxythiophene) (PEDOT) nanolayers have been prepared. A steel sheet coated with a sacrificial layer of PEDOT:poly( ...

    • Performance of polyester-based electrospun scaffolds under in vitro hydrolytic conditions: From short-term to long-term applications 

      Gil Castell, Oscarº; Badía Valiente, José David; Bou Serra, Jordi; Ribes Greus, Amparo (2019-05-01)
      Article
      Accés obert
      The evaluation of the performance of polyesters under in vitro physiologic conditions is essential to design scaffolds with an adequate lifespan for a given application. In this line, the degradation-durability patterns ...

    • Poly(alkylene 2,5-furandicarboxylate)s (PEF and PBF) by ring opening polymerization 

      Morales Huerta, Juan Carlos; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (Elsevier, 2016-03-22)
      Article
      Accés obert
      The preparation of cyclic ethylene and butylene 2,5-furandicarboxylate oligoesters and their conversion to furan-based polyesters poly(ethylene furanoate) (PEF) and poly(butylene furanoate) (PBF) by ring-opening polymerization ...

    • Poly(butylene 2,5-furan dicarboxylate-co-butylene succinate) via ring opening polymerization 

      Morales Huerta, Juan Carlos; Ciulik, Claudio; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Muñoz Guerra, Sebastián (2016)
      Text en actes de congrés
      Accés obert
      In this communication we wish to report on the synthesis of PBFxSy copolyesters by ring opening polymerization (ROP) using either organometallic catalysts or enzymes. The ROP of macrocyclic oligomers (MCOs) has been ...