Browsing by Author "Oliver Ortega, Helena"
Now showing items 1-20 of 21
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A comprehensive study on the effect of plasticizers on the characteristics of Polymer Inclusion Membranes (PIMs): exploring butyl stearate as a promising alternative
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-09)
Article
Open AccessThis study investigated the influence of various plasticizers commonly used in the manufacture of polymer inclusion membranes (PIMs), such as 2-nitrophenyl octyl ether (NPOE), phthalates, adipates, and sebacates on the ... -
Bacterial cellulose network from kombucha fermentation impregnated with emulsion-polymerized poly(methyl methacrylate) to form nanocomposite
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-02-23)
Article
Open AccessThe use of bio-based residues is one of the key indicators towards sustainable development goals. In this work, bacterial cellulose, a residue from the fermentation of kombucha tea, was tested as a reinforcing nanofiber ... -
Determination of mean intrinsic flexural strength and coupling factor of natural fiber reinforcement in polylactic acid biocomposites
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-10-23)
Article
Open AccessThis paper is focused on the flexural properties of bleached kraft softwood fibers, bio-based, biodegradable, and a globally available reinforcement commonly used in papermaking, of reinforced polylactic acid (PLA) composites. ... -
Effect of extruder type in the interface of PLA layers in FDM printers: filament extruder versus direct pellet extruder
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-04-24)
Article
Open AccessFDM (Fused Deposition Modeling) is one of the most used and industrially applied additive manufacturing processes due to its fast prototyping and manufacturing, simplicity, and low cost of the equipment. However, the ... -
Enhancing the mechanical performance of bleached hemp fibers reinforced polyamide 6 composites: a competitive alternative to commodity composites
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-02)
Article
Open AccessAutomotive and industrial design companies have profusely used commodity materials like glass fiber-reinforced polypropylene. These materials show advantageous ratios between cost and mechanical properties, but poor ... -
Flexural properties and mean intrinsic flexural strength of old newspaper reinforced polypropylene composites
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-26)
Article
Open AccessNewspapers have a limited lifespan, and therefore represent a focus of used and disposed paper. While these refuses have a considerable value and can be easily recycled, a considerable fraction ends in landfill. The authors ... -
HACKTEX MOOC on smart textiles tested on practical experience: a workshop about raw materials for the development of smart textiles
(International Association of Technology, Education and Development (IATED), 2024)
Conference lecture
Restricted access - publisher's policySmart textiles have gathered an increasing interest in the industry in recent years. Nevertheless, due to its uneven development and its novelty, the presence of this topic in the educational curricula is scarce and mainly ... -
Impact strength and water uptake behavior of bleached kraft softwood-reinforced PLA composites as alternative to PP-based materials
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-09-20)
Article
Open AccessThe research toward environmentally friendly materials has devoted a great effort on composites based on natural fiber-reinforced biopolymers. These materials have shown noticeable mechanical properties, mainly tensile and ... -
Improved process to obtain nanofibrillated cellulose (CNF) reinforced starch films with upgraded mechanical properties and barrier character
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-07)
Article
Open AccessNowadays, the interest on nanofibrillated cellulose (CNF) has increased owing to its sustainability and its capacity to improve mechanical and barrier properties of polymeric films. Moreover, this filler shows some drawbacks ... -
Life cycle assessment of PE and PP multi film compared with PLA and PLA reinforced with nanoclays film
(Elsevier, 2022-12-20)
Article
Open AccessPlastic has become essential for our economy and the packaging industry. However, plastic use is linked to environmental problems such as waste generation and loss of resources, since only 42% of the plastic used for ... -
Maleic anhydride polylactic acid coupling agent prepared from solvent reaction: synthesis, characterization and composite performance
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-02-02)
Article
Open AccessIn the present work, a functionalization of polylactic acid (PLA) has been carried out to anchor maleic anhydride onto the main polymer chain to promote improvement in the compatibility of this polymer matrix with cellulose ... -
Nanoclay effect into the biodegradation and processability of poly(lactic acid) nanocomposites for food packaging
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-08-16)
Article
Open AccessOne of the most promising expectations in the design of new materials for food packaging is focused on the development of biodegradable systems with improved barrier character. In this sense PLA reinforced with nanoclay ... -
Nanocomposites materials of PLA reinforced with nanoclays using a masterbatch technology: a study of the mechanical performance and its sustainability
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-06-29)
Article
Open AccessPackaging consumes around 40% of the total plastic production. One of the most important fields with high requirements is food packaging. Food packaging products have been commonly produced with petrol polymers, but due ... -
Nuevo material de construcción a partir de residuos de ropa usada
(2024-07)
Article
Open AccessEl nuevo material creado por el grupo de investigación TECTEX, del Campus de Terrassa, mejora las propiedades del fibrocemento, es muy resistente, más flexible que otros materiales de construcción, es ignífugo y contribuye ... -
Polyhydroxy-3-Butyrate (PHB)-based composite materials reinforced with cellulosic fibers, obtained from barley waste straw, to produce pieces for agriculture applications: production, characterization and scale-up analysis
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-04-19)
Article
Open AccessCellulosic fibers obtained from Barley straw were utilized to reinforce PHB. Four different processed fibers were employed as reinforcing material: sawdust (SW), defibered (DFBF), delignified (DBF), and bleached (BBF) ... -
Reducing the amount of catalyst in TEMPO-oxidized cellulose nanofibers: effect on properties and cost
(Multidisciplinary Digital Publishing Institute (MDPI), 2017-10-26)
Article
Open AccessCellulose nanofibers (CNF) are interesting biopolymers that find numerous applications in different scientific and technological fields. However, manufacturing costs are still one of the main drawbacks for the industrial ... -
Research on the strengthening advantages on using cellulose nanofibers as polyvinyl alcohol reinforcement
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-22)
Article
Open AccessThe present work aims to combine the unique properties of cellulose nanofibers (CNF) with polyvinyl alcohol (PVA) to obtain high-performance nanocomposites. CNF were obtained by means of TEMPO-mediated ((2,2,6,6-Tetramet ... -
Research on the use of lignocellulosic fibers reinforced bio-polyamide 11 with composites for automotive parts: car door handle case study
(2019-04-15)
Article
Open Access -
Simulated environmental conditioning of PHB composites reinforced with barley fibres to determine the viability of their use as plastics for the agriculture sector
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-22)
Article
Open AccessNowadays, the search for new materials with a sustainable character to reduce the production of residues is under continuous research. In this sense, fully biodegradable composites based on polyhydroxybutyrate and different ... -
TECTEX-Grupo de investigación en tecnología textil: investigación para contribuir a la transición verde y digital de la industria textil
(Asociación Española de Químicos y Coloristas Textiles, 2024-01-08)
Article
Open AccessEl grupo de investigación de ingeniería textil (TECTEX) INTEXTER y del Departamento de Ciencia e Ingeniería de Materiales de la Universitat Politècnica de Catalunya tiene como principal objetivo el desarrollo y optimización ...
