Exploració per autor "Franco García, María Lourdes"
Ara es mostren els items 35-54 de 76
-
Micro-molding with ultrasonic vibration energy: New method to disperse nanoclays in polymer matrices
(2014-07)
Article
Accés restringit per política de l'editorialUltrasound technology was proved as an efficient processing technique to obtain micro-molded specimens of polylactide (PLA) and polybutylene succinate (PBS), which were selected as examples of biodegradable polyesters ... -
Microstructural changes during degradation of biobased poly(4-hydroxybutyrate) sutures
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-09-01)
Article
Accés obertFibers of poly(4-hydroxybutyrate) (P4HB) have been submitted to both hydrolytic and enzymatic degradation media in order to generate samples with different types and degrees of chain breakage. Random chain hydrolysis is ... -
Nanocomposites based on chain extended poly(l-lactic acid)/carboxylated carbon nanotubes: crystallization kinetics and lamellar morphology
(2019-06-01)
Article
Accés obertIsothermal 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
(2011-03-16)
Article
Accés obertPolymers are easily prepared by bulk polycondensation based on metal-halide salt formation, while crystallization is strongly influenced by incorporation and distribution of silicate nanoparticles. -
Non-isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer
(2019-08-05)
Article
Accés obertThe 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
(American Chemical Society (ACS), 2022-02-18)
Article
Accés obertIn 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 ... -
Optimization of the sintering thermal treatment and the ceramic ink used in direct ink writing of a-Al2O3: Characterization and catalytic application
(Elsevier, 2022-06-01)
Article
Accés restringit per política de l'editorialUnlike other engineered ceramic products, alumina (Al2O3) displays interesting mechanical and physical properties, which makes it an ideal candidate for a wide range of uses in different fields and in particular for catalytic ... -
Performance-enhancing materials in medical gloves
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-06-30)
Article
Accés obertMedical 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 ... -
Poly(butylene azelate-co-butylene succinate) copolymers: Crystalline morphologies and degradation
(2014-01)
Article
Accés restringit per política de l'editorialRandom 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(butylene succinate) matrices obtained by thermally-induced phase separation: Pore shape and orientation affect drug release
(Elsevier, 2022-06-14)
Article
Accés obertPoly(butylene succinate) (PBS) scaffolds with 3D microporous interconnected architecture and crystallized PBS substructures have been prepared by thermally-induced phase separation (TIPS). Curcumin (CUR) and piperine (PIP) ... -
Preparation and release study of ibuprofen-loaded porous matrices of a biodegradable poly(ester amide) derived from L -alanine units
(2011-11)
Article
Accés restringit per política de l'editorialScaffolds of a biodegradable poly(ester amide)constituted of L-alanine, sebacic acid, and 1,12-dodecanediol units (abbreviated as PADAS) were prepared by the compression-molding/particulate-leaching method. The influence ... -
Preparation of medicated polylactide micropieces by means of ultrasonic technology
(Multidisciplinary Digital Publishing Institute, 2019-06-01)
Article
Accés obertA technology based on the application of ultrasound as an energy source was applied to get polylactide (PLA) micropieces with minimum degradation and processing time. This requirement could be even shorter than 1.5 s. The ... -
Preparation of micro-molded exfoliated clay nanocomposites by means of ultrasonic technology
(2014-10-15)
Article
Accés restringit per política de l'editorialUltrasound 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 ... -
Preparation of nanocomposites of poly(epsilon-caprolactone) and multi-walled carbon nanotubes by ultrasound micro-molding. Influence of nanotubes on melting and crystallization
(2017-08-01)
Article
Accés obertUltrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(e-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e. ... -
Preparation of random poly(butylene alkylate-co-terephthalate)s with different methylene group contents: crystallization and degradation kinetics
(2017-10)
Article
Accés restringit per política de l'editorialRandom copolyesters having 1,4-butanediol units were synthesized from a transesterification process between homopolymers constituted by aliphatic dicarboxylates (i.e. succinate, adipate or sebacate) and the aromatic ... -
Reversible changes induced by temperature in the spherulitic birefringence of nylon 6 9
(Elsevier, 2015-10-12)
Article
Accés obertSpherulitic morphologies of nylon 6 9 as an example of an even-odd nylon were studied by optical microscopy. A well-defined dependence on crystallization temperature was found. In particular, positively birefringent ... -
Scaffolds with tunable properties constituted by electrospun nanofibers of polyglycolide and poly(e-caprolactone)
(2018-01-01)
Article
Accés obertElectrospun scaffolds constituted by different mixtures of two biodegradable polyesters are prepared. Specifically, materials with well differentiated properties can be derived from the blending of hydrophilic polyglycolide ... -
Sequence analysis of glycolide and p-dioxanone copolymers
(2009-11)
Article
Accés restringit per política de l'editorialLow and medium molecular weight copolymers constituted by glycolide and p-dioxanone units have been synthesized by a ring-opening polymerization. The p-dioxanone monomer was obtained from (2-hydroxyethoxy)acetate or by ... -
Síntesis y caracterización estructural de nuevas poliamidas con unidades monometilénicas. Aplicaciones potenciales en el campo de la biomedicina
(Universitat Politècnica de Catalunya, 1994-10-14)
Tesi
Accés obertSe han sintetizado nylons 1,n (n=5,6,7,8,10 y 12); nylons 2/n estadísticos con distintas proporciones de glicina (n=6, 11 y 12) y nylons m,n (m=6,12; n=6) con glicina incorporada secuencialmente y al azar. Los productos ... -
Smart design for a flexible, functionalized and electroresponsive hybrid platform based on poly(3,4-ethylenedioxythiophene) derivatives to improve cell viability
(Royal Society of Chemistry, 2020-10-14)
Article
Accés obertDevelopment of smart functionalized materials for tissue engineering has attracted significant attention in recent years. In this work we have functionalized a free-standing film of isotactic polypropylene (i-PP), a synthetic ...
