Exploració per autor "Díaz Andrade, Angélica María"

Ara es mostren els items 1-19 de 19

    • Amorphous binary dispersions of chloramphenicol in enantiomeric pure and racemic poly-lactic acid: morphology, molecular relaxations, and controlled drug release 

      Valenti, Sofia; Díaz Andrade, Angélica María; Romanini, Michela; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi; Tamarit Mur, José Luis; Macovez, Roberto (2019-09-10)
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      Accés obert
      We study amorphous solid dispersions (ASDs) of the chloramphenicol antibiotic in two biodegradable polylactic acid polymers, namely a commercial sample of enantiomeric pure PLLA and a home-synthesized PDLLA copolymer, to ...

    • Amyloid fibrils from organic solutions of an amphiphilic dipeptide 

      Casanovas Salas, Jordi; Mayans Tayadella, Enric; Díaz Andrade, Angélica María; Martínez Gil, Ana; Jimenez Sanz, Ana Isabel; Cativiela, Carlos; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2019-01-01)
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      Accés obert
      Non-hydrated organic solutions of a diphenylalanine amphiphile blocked at the C-terminus with a fluorenylmethyl ester and stabilized at the N-terminus with a trifluoroacetate have been used to prepare amyloid fibrils. The ...

    • Amyloid-like fibrils from a diphenylalanine capped with an aromatic fluorenyl 

      Martí Ballesté, Dídac; Mayans Tayadella, Enric; Gil, Ana M.; Díaz Andrade, Angélica María; Jimenez Sanz, Ana Isabel; Yousef, Ibraheem; Keridou, Ina; Cativiela, Carlos; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2018-11-19)
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      Accés obert
      The self-assembly behavior of a diphenylalanine amphiphile blocked at the C-terminus with a 9-fluorenylmethyl ester and stabilized at the N-terminus with a trifluoroacetate (TFA) anion, TFA·FF-OFm, has been examined. At ...

    • Anhydric maleic functionalization and polyethylene glycol grafting of lactide-co-trimethylene carbonate copolymers 

      Díaz Andrade, Angélica María; Valle Mendoza, Luis Javier del; Franco García, María Lourdes; Sarasua, Jose-Ramon; Estrany Coda, Francesc; Puiggalí Bellalta, Jordi (2014-09-01)
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      Accés restringit per política de l'editorial
      Lactide and trimethylene carbonate copolymers were successfully grafted with polyethylene glycol via previous functionalization with maleic anhydride and using N,N'-diisopropylcarbodiimide as condensing agent. Maleinization ...

    • Antimicrobial activity of poly(ester urea) electrospun fibers loaded with bacteriophages 

      Díaz Andrade, Angélica María; Valle Mendoza, Luis Javier del; Rodrigo Arcay, Noel; Casas Becerra, María Teresa; Chumburizge, G; Katsarava, Ramaz; Puiggalí Bellalta, Jordi (2018-06-01)
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      Accés obert
      The capacity to load bacteriophages into electrospun nanofibers of two representative biocompatible polymers has been evaluated, paying special attention to the possibility of preserving their antibacterial activity. ...

    • Biodegradable nanofibrous scaffolds as smart delivery vehicles for amino acids 

      Maione, Silvana; Pérez Madrigal, Maria del Mar; Valle Mendoza, Luis Javier del; Díaz Andrade, Angélica María; Catiavela, Carlos; Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2017)
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      The encapsulation of amino acids (AAs) and their correct preservation before they are ingested are challenging tasks. Nonpolar (l-alanine and l-phenylalanine), polar (l-cysteine hydrochloride and l-asparagine), and charged ...

    • Biohydrogel from unsaturated polyesteramide: Synthesis, properties and utilization as electrolytic medium for electrochemical supercapacitors 

      Ruano Torres, Guillem; Díaz Andrade, Angélica María; Tononi García, Jordi; Torras Costa, Juan; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (Elsevier, 2020-02-01)
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      Accés obert
      The utilization of hydrogels derived from biopolymers as solid electrolyte (SE) of electrochemical supercapacitors (ESCs) is a topic of increasing interest because of their promising applications in biomedicine (e.g. for ...

    • Dual-functionalization device for therapy through dopamine release and monitoring 

      Fabregat Jové, Georgina; Giménez, Alessia; Díaz Andrade, Angélica María; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2018-01-01)
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      Accés obert
      A dual-functional device is fabricated to release progressively dopamine (DA) from a biohydrogel under real-time monitoring via electrochemical detection. For this purpose, a poly-¿-glutamic acid biohydrogel is assembled ...

    • 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) ...

    • 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-y-glutamic Acid Hydrogels as Electrolyte for Poly(3,4-ethylenedioxythiophene)-Based Supercapacitors 

      Pérez Madrigal, Mª del Mar; Edo, Miquel G.; Díaz Andrade, Angélica María; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos (2017-02-16)
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      Accés obert
      Biosynthetic poly-¿-glutamic acid (¿-PGA) has been used to produce hydrogels using cystamine as cross-linker and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide methiodide (EDC methiodide) as condensing agent. Eight different ...

    • Preferential incorporation of azelaic acid units into the crystalline phase of the copoly(alkylene dicarboxylate) derived from 1,9-nonanediol and an equimolar mixture of pimelic and azelaic acids 

      Díaz Andrade, Angélica María; Casas Becerra, María Teresa; Puiggalí Bellalta, Jordi (2015-09-01)
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      Accés obert
      The crystalline structure of two biodegradable odd-odd polyesters (i.e., poly(nonamethylene pimelate) (PES 9,7) and poly(nonamethylene azelate) (PES 9,9)) was investigated by means of electron and X-ray diffraction of ...

    • Preparation of micro-molded exfoliated clay nanocomposites by means of ultrasonic technology 

      Díaz Andrade, Angélica María; Franco García, María Lourdes; Casas Becerra, María Teresa; Valle Mendoza, Luis Javier del; Aymami Bofarull, Juan; Olmo Osuna, Cristian; Puiggalí Bellalta, Jordi (2014-10-15)
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      Accés restringit per política de l'editorial
      Ultrasound micro-molding technology has been tested as a new method to get polymer/clay nanocomposites. Biodegradable polylactide (PLA) and poly (nona-methylene azelate) (PE99) have been used as polymer matrices, whereas ...

    • Self-assembly of diphenylalanine with preclick components as capping groups 

      Gemma, Andrea; Mayans Tayadella, Enric; Ballano Ballano, María Gema; Torras Costa, Juan; Díaz Andrade, Angélica María; Jimenez Sanz, Ana Isabel; Puiggalí Bellalta, Jordi; Cativiela Marín, Carlos A.; Alemán Llansó, Carlos (2017-01-01)
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      Accés obert
      Alkyne and azide, which are commonly used in the cycloaddition reaction recognized as “click chemistry”, have been used as capping groups of two engineered diphenylalanine (FF) derivatives due to their ability to form weak ...

    • Self-assembly of tetraphenylalanine peptides 

      Mayans Tayadella, Enric; Ballano Ballano, María Gema; Casanovas Salas, Jordi; Díaz Andrade, Angélica María; Pérez Madrigal, Maria del Mar; Estrany Coda, Francesc; Puiggalí Bellalta, Jordi; Cativiela Marín, Carlos A.; Alemán Llansó, Carlos (2015-11-01)
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      Accés restringit per política de l'editorial
      Three different tetraphenylalanine (FFFF) based peptides that differ at the N- and C-termini have been synthesized by using standard procedures to study their ability to form different nanoassemblies under a variety of ...

    • Study on the crystallization of multiarm stars with a poly(ethyleneimine) core and poly(epsilon-caprolactone) arms of different length 

      Díaz Andrade, Angélica María; Bacaicoa, Anna; Casas, Maria Teresa; Franco García, María Lourdes; Serra Albet, Maria Àngels; Puiggalí Bellalta, Jordi (2015-05-10)
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      Accés obert
      Crystallization of multiarm star systems constituted by a core of poly(ethyleneimine) (PEI) and arms of poly(epsilon-caprolactone) (PCL) was studied by transmission electron microscopy, calorimetry and optical microscopy ...

    • Study on the crystallization of poly(alkylene dicarboxylate)s derived from 1,9-nonanediol and mixtures with different ratios of azelaic acid and pimelic acid units 

      Díaz Andrade, Angélica María; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2016-01)
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      Accés obert
      Polyalkylene dicarboxylates derived from 1,9-nonanediol and mixtures with different ratios of pimelic acid and azelaic acid were synthesized by thermal polycondensation. All samples had a high degree of crystallinity ...

    • Study on the crystallization of poly(butylene azelate-co-butylene succinate) copolymers 

      Díaz Andrade, Angélica María; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2014-01-10)
      Article
      Accés restringit per política de l'editorial
      Poly(butylene azelate-co-butylene succinate) samples with different azelate/succinate ratios were synthesized and characterized. Calorimetric data indicate a semicrystalline character for all copolyesters studied and a ...

    • Synthesis, properties and applications of biodegradable polymers derived from diols and dicarboxylic acids: from polyesters to poly(ester amide)s 

      Díaz Andrade, Angélica María; Katsarava, Ramaz; Puiggalí Bellalta, Jordi (2014-05-01)
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      Accés obert
      Poly(alkylene dicarboxylate)s constitute a family of biodegradable polymers with increasing interest for both commodity and speciality applications. Most of these polymers can be prepared from biobased diols and dicarboxylic ...