Browsing by Subject "Polylactic acid"
Now showing items 1-20 of 52
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3D printed probe for simultaneous E and H fields measurements
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessAdditive manufacturing using conductive polylactic acid (PLA) is an emerging technology. This work presents a double-loaded loop probe made of conductive PLA and evaluates its performance compared to a previous design built ... -
A study on hybrid nanofiber and lanolin structures
(Universitat Politècnica de Catalunya, 2022-07-13)
Bachelor thesis
Open AccessThe scientific and medical communities are showing a growing interest in tissue engineering as a means to solve issues regarding donor tissues, wound healing and drug delivery systems. Nanofibers are gaining quite a lot ... -
Amorphous binary dispersions of chloramphenicol in enantiomeric pure and racemic poly-lactic acid: morphology, molecular relaxations, and controlled drug release
(2019-09-10)
Article
Open AccessWe 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 ... -
Armario cápsula 'streetwear' diseñado con fibras sostenibles
(Universitat Politècnica de Catalunya, 2021-04)
Master thesis
Open AccessLa tendencia de los últimos años está siendo construir de una manera sostenibilista todo lo que nos rodea, incluso nuestra forma de vestir. Cada vez nos inclinamos más a cambiar el concepto “fast fashion” y optar por ... -
Biodegradació de diversos graus d'àcid polilàctic per compostatge
(Universitat Politècnica de Catalunya, 2016-03)
Master thesis (pre-Bologna period)
Open AccessL’acumulació de plàstics causada per la societat al llarg de les últimes dècades i els problemes mediambientals que poden comportar, inicià un corrent de recerca en el camps dels plàstics biodegradables a principis del ... -
Biomezclas de materiales compuestos PLA/PA microfibrilados in situ
(Universitat Politècnica de Catalunya, 2021-02-15)
Master thesis
Open AccessEl ácido poliláctico (PLA) es un material prometedor por su carácter biobasado y biodegradable, no obstante, sus bajas prestaciones en el estado fundido junto con su fragilidad impiden usarlo en aplicaciones de alto valor ... -
Caracterización mecánica, microestructural y a fractura de un material compuesto nanoestructurado de matriz PLA y refuerzo monmorillonita.
(Universitat Politècnica de Catalunya, 2012-10)
Master thesis (pre-Bologna period)
Open AccessEn este trabajo se evaluó la influencia de la morfología de los compuestos (PLA-oMMT) sobre el comportamiento mecánico y a fractura en láminas calandradas. Se realizó un análisis de imagen utilizando micrografías TEM, ... -
Characterization and treatments of oil palm frond fibers and its suitability for technical applications
(2014-09-29)
Article
Restricted access - publisher's policyThe aim of this paper is to explore the potential of oil palm frond fibers (OPFf) for technical applications such as composite reinforcement. For this purpose, fibers obtained from frond wastes were subjected to various ... -
Cheaper membrane materials for microalgae dewatering
(Springer, 2014-10-01)
Article
Open AccessAmong different strategies to reduce costs in microalgae dewatering process via cross-flow filtration, the one related to membrane material was investigated in order to be decreased. Several materials were tested, starting ... -
Comportamiento y propiedades de las fibras de polilactida (PLA) durante su procesado y uso
(Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa. Universitat Politècnica de Catalunya (UPC), 2010)
Article
Open AccessDurante los últimos años los investigadores involucrados en el proyecto “Microestructura, caracterización, propiedades y aplicaciones de las fibras de polilactida” subvencionado por el Ministerio de Ciencia e Innovación ... -
Crystal polymorphism of polylactides and poly(Pro-alt-CO): The metastable beta and gamma phases. Formation of homochiral PLLA phases in the PLLA/PDLA blends
(Elsevier, 2017-04-21)
Article
Restricted access - publisher's policyAmong the various crystalline phases of polylactides, an elusive orthorhombic gamma phase (¿PLLA) had been obtained so far only by epitaxial crystallization on hexamethylbenzene. A recent work by J. Shao et al. (Macromolecules, ... -
Crystallization kinetics of chain extended poly(L-lactide)s having different molecular structures
(2020-01-15)
Article
Open AccessPoly(L-lactide)s (PLLAs) with different chain structures were prepared by reactive melt processing and using Joncryl ADR as chain extender. Results of gel permeation chromatography (GPC) revealed that chain extended PLLAs ... -
Determinació del número de ramificacions segons % d’extensor de cadena en PLA
(Universitat Politècnica de Catalunya, 2015-06)
Master thesis (pre-Bologna period)
Open AccessL’àcid polilàctic (PLA) és un polímer biodegradable que està convertint-se en una alternativa als combustibles fòssils. No obstant, presenta males prestacions a altes temperatures. Des de l’UPC en col·laboració amb el ... -
Diffusional approach on electrospun PLLA membranes for caffeine delivery
(Book publisher international, 2021-05-07)
Part of book or chapter of book
Restricted access - publisher's policyOne of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ... -
Drug release from electrospun poly(lactic acid) membranes and their cell viability in vitro test
(2012-01-11)
Article
Open Access -
Effect of oxidized wood flour as functional filler on the mechanical, thermal and flame-retardant properties of polylactide biocomposites
(2019-04-01)
Article
Open AccessBased on the biodegradable material-polyethylene glycol (PEG)-as the plasticizer, oxidized wood flour (OWF) as the charring agent for polylactide (PLA), a series flame-retardant PLA biocomposites were prepared via ... -
Effect of processing and wearing on viscoelastic modeling of polylactide/wool and polyester/wool woven fabrics subjected to bursting
(2014-11-01)
Article
Restricted access - publisher's policyPolyester fibers (PET) are greatly used in textiles but depend on fossil fuel resources. Poly-(lactic acid) (PLA) is an aliphatic polyester that can be derived from 100% renewable resources. The load-extension plot of a ... -
Effect of the annealing procedure and the molecular weight on the crystalline phase morphology and thermal properties of polylactide
(2019-01-01)
Article
Open AccessThe thermomechanical properties of poly(lactide) (PLA) are strongly related to its semicrystalline microstructure and morphology. Thermal annealing is a strategy to improve the crystallinity of PLA. However, the different ... -
Elaboración y estudio de dispersiones de ácido poliláctico
(Universitat Politècnica de Catalunya, 2016-01)
Bachelor thesis
Restricted access - confidentiality agreement -
Electrospun scaffolds of polylactide with a different enantiomeric content and loaded with anti-inflammatory and antibacterial drugs
(2015-07-01)
Article
Open AccessPolylactide (PLA) electrospun microfibers were prepared and loaded with triclosan (TCS), ketoprofen (KTP), or their combination to obtain multifunctional scaffolds with bactericide and anti-inflammatory properties. Continuous ...
