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Ara es mostren els items 92-111 de 170

    • Nanocomposites based on chain extended poly(l-lactic acid)/carboxylated carbon nanotubes: crystallization kinetics and lamellar morphology 

      Yousefzade, Omid; Franco García, María Lourdes; Nami, Mahsa; Puiggalí Bellalta, Jordi; Garmabi, Hamid (2019-06-01)
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      Accés obert
      Isothermal and nonisothermal crystallization kinetics of poly(l-lactide) and its nanocomposites with different multiwalled carbon nanotubes (i.e., pristine and functionalized) were investigated. The effects of chain extension ...

    • Nanocomposites of new biodegradable poliesters and polyesteramides 

      Puiggalí Bellalta, Jordi; Morales Gámez, Laura Teresa; Franco García, María Lourdes; Casas Becerra, María Teresa; Valle Mendoza, Luis Javier del; Rodríguez Galán, Rafael Alfonso (2011-03-16)
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      Accés obert
      Polymers are easily prepared by bulk polycondensation based on metal-halide salt formation, while crystallization is strongly influenced by incorporation and distribution of silicate nanoparticles.

    • Nanofeatures affect the thermal transitions of polymer thin films: a microcantilever-based investigation 

      Puiggalí Bellalta, Jordi; Pérez Madrigal, Maria del Mar; Alemán Llansó, Carlos (Royal Society of Chemistry (RSC), 2020)
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      Accés obert
      Nanotechnology is regarded as a promising tool to advance science for a wide range of applications, ranging from nanomedicine, nanoelectronics, imaging and diagnosis. Whilst the unique surface properties of nanostructured ...

    • Nanomembranes and nanofibers from biodegradable conducting polymers 

      Llorens Domenjó, Elena; Armelín Diggroc, Elaine Aparecida; Pérez Madrigal, Maria del Mar; Valle Mendoza, Luis Javier del; Alemán Llansó, Carlos; Puiggalí Bellalta, Jordi (2013-09-01)
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      Accés obert
      This review provides a current status report of the field concerning preparation of fibrous mats based on biodegradable (e. g., aliphatic polyesters such as polylactide or polycaprolactone) and conducting polymers (e. g., ...

    • Nanoparticle-driven self-assembling injectable hydrogels provide a multi-factorial approach for chronic wound treatment 

      Pérez Rafael, Silvia; Ivanova, Kristina Dimitrova; Stefanov, Ivaylo; Puiggalí Bellalta, Jordi; Valle Mendoza, Luis Javier del; Todorova, Katerina; Dimitrov, Petar; Hinojosa Caballero, Dolores; Tzanov, Tzanko (Elsevier, 2021-07-14)
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      Accés obert
      Chronic wounds represent a major health burden and drain on medical system. Efficient wound repair is only possible if the dressing materials target simultaneously multiple factors involved in wound chronicity, such as ...

    • New amino acid based biodegradable poly(ester amide)s via bis-azlactone chemistry 

      Kobauri, Sophio; Otinashvili, Giuli; Kantaria, Tengiz; Tugushi, David; Kharadze, Darejan; Kutsiava, Nazi; Puiggalí Bellalta, Jordi; Katsarava, Ramaz (2018-11-08)
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      Accés obert
      Three new classes of the amino acid based biodegradable (AABB) polymers were synthesized via step growth polymerization of bis-azlactones and amino acid based diamine-diesters with activated fatty diester and alkylenediamine: ...

    • 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)
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      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) ...

    • Non-isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer 

      Keridou, Ina; Valle Mendoza, Luis Javier del; Funk, Lutz; Turon, Pau; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2019-08-05)
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      Accés obert
      The non-isothermal crystallization of the biodegradable poly(4-hydroxybutyrate) (P4HB) has been studied by means of differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). In the first case, Avrami, ...

    • Novel biobased epoxy thermosets and coatings from poly(limonene carbonate) oxide and synthetic hardeners 

      Bonamigo Moreira, Vitor; Rintjema, Jeroen; Bravo Lara, Fernando; Kleij, Arjan W.; Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos; Armelín Diggroc, Elaine Aparecida (American Chemical Society (ACS), 2022-02-18)
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      Accés obert
      In the area of coating development, it is extremely difficult to find a substitute for bisphenol A diglycidyl ether (DGEBA), the classical petroleum-based raw material used for the formulation of epoxy thermosets. This ...

    • Nucleating and retarding effects of nanohydroxyapatite on the crystallization of poly(butylene terephthalate-co-alkylene dicarboxylate)s with different lengths 

      Heidarzadeh, Nina; Rafizadeh, Mehdi; Faramarz Afshar Taromi, Faramarz Afshar; Puiggalí Bellalta, Jordi; Valle Mendoza, Luis Javier del (Springer, 2019)
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      Accés obert
      New biodegradable and biocompatible composites are continuously developed for biomedical applications (e.g., from drug delivery devices to tissue engineering scaffolds). Properties of such systems may depend on their ...

    • Nucleation and antinucleation effects of functionalized carbon nanotubes on cyclic and linear Poly(e-caprolactones) 

      Perez, Ricardo A.; Lopez, Juan V; Hoskins, Jessica N.; Zhang, Boyu; Grayson, Scott M.; Casas Becerra, María Teresa; Puiggalí Bellalta, Jordi; Muller, Alejandro J. (American Chemical Society (ACS), 2014-06-10)
      Article
      Accés restringit per política de l'editorial
      Novel nanocomposites were prepared by blending linear or cyclic poly(e-caprolactones) with two types of chemically modified carbon nanotubes (CNTs). The low-polydispersity cyclic PCL samples (C-PCLs) were synthesized by ...

    • Optimization of permanently polarized hydroxyapatite catalyst. Implications for the electrophotosynthesis of amino acids by nitrogen and carbon fixation 

      Sans Milà, Jordi; Sanz Beltran, Vanesa; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi; Turón, Pau; Alemán Llansó, Carlos (2021-05)
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      Accés obert
      The enhanced catalytic activity of permanently polarized hydroxyapatite, which is achieved using a thermally stimulated polarization process, largely depends on both the experimental conditions used to prepare crystalline ...

    • Performance-enhancing materials in medical gloves 

      Lovato Vélez, María José; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi; Franco García, María Lourdes (Multidisciplinary Digital Publishing Institute (MDPI), 2023-06-30)
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      Accés obert
      Medical gloves, along with masks and gowns, serve as the initial line of defense against potentially infectious microorganisms and hazardous substances in the health sector. During the COVID-19 pandemic, medical gloves ...

    • Permanently polarized hydroxyapatite for selective electrothermal catalytic conversion of carbon dioxide into ethanol 

      Sans Milà, Jordi; Revilla López, Guillermo; Sanz Beltran, Vanesa; Puiggalí Bellalta, Jordi; Turón, Pau; Alemán Llansó, Carlos (2021-05-25)
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      Accés obert
      Conversion of CO2 into valuable chemicals is not only a very challenging topic but also a socially demanding issue. In this work, permanently polarized hydroxyapatite obtained using a thermal stimulated polarization process ...

    • Phase-selective conductivity enhancement and cooperativity length in PLLA/TPU nanocomposite blends with carboxylated carbon nanotubes 

      Valenti, Sofia; Yousefzade, Omid; Puiggalí Bellalta, Jordi; Macovez, Roberto (Elsevier, 2020-03-16)
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      Accés obert
      Transmission electron microscopy, temperature-modulated differential scanning calorimetry, and broadband dielectric spectroscopy were employed to characterize ternary nanocomposites consisting of carboxylated carbon nanotubes ...

    • Poly(aspartic acid) biohydrogel as the base of a new hybrid conducting material 

      Fontana Escartín, Adrián; Ruano Torres, Guillem; Silva, Fiorella M.; Estrany Coda, Francesc; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos; Torras Costa, Juan (2021-12-06)
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      Accés obert
      In the present study, a composite made of conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), and a biodegradable hydrogel of poly(aspartic acid) (PASP) were electrochemically interpenetrated with poly(hydroxym ...

    • Poly(butylene azelate-co-butylene succinate) copolymers: Crystalline morphologies and degradation 

      Díaz Andrade, Angélica María; Franco García, María Lourdes; Estrany Coda, Francesc; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi (2014-01)
      Article
      Accés restringit per política de l'editorial
      Random copolymers derived from 1,4-butanediol and two dicarboxylic units differing in the parity of the number of methylene groups and length of the polymethylene sequence (i.e. succinic and azelaic acids) were studied in ...

    • Poly(e-caprolactone) films reinforced with chlorhexidine loaded electrospun polylactide microfibers 

      Márquez Lobato, Yolanda; Graupera, J.; Valle Mendoza, Luis Javier del; Turón Dols, Pau; Franco, L.; Puiggalí Bellalta, Jordi (2017)
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      Accés obert
      Poly(e-caprolactone) (PCL) films reinforced with polylactide (PLA) microfibers were prepared by two methodologies: a) melt pressing of an electrospun PLA mat between two PCL films, and b) melt pressing of a co-electrospun ...

    • Poly(epsilon-caprolactone) films reinforced with chlorhexidine loaded electrospun polylactide microfibers 

      Márquez Lobato, Yolanda; Graupera, J.; Valle Mendoza, Luis Javier del; Turón Dols, Pau; Franco, L.; Puiggalí Bellalta, Jordi (2017-09-01)
      Article
      Accés obert
      Poly(e-caprolactone) (PCL) films reinforced with polylactide (PLA) microfibers were prepared by two methodologies: a) melt pressing of an electrospun PLA mat between two PCL films, and b) melt pressing of a co-electrospun ...

    • Poly(hydroxybutyrate-co-hydroxyvalerate) porous matrices from thermally induced phase separation 

      Zeinali, Reza; Khorasani, Mohammad Taghi; Behnamghader, Aliasghar; Atai, Mohammad; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-01)
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      Accés obert
      Thermally induced phase separation followed by freeze drying has been used to prepare biodegradable and biocompatible scaffolds with interconnected 3D microporous structures from poly(hydroxybutyrate-co-hydroxyvalerate) ...