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Orientation effect in poly (butylene succinate) fibers
(Polymers & Polymer Composites vol.11 no.1 51-56 2003, 2003)
Fibers of poly (butylene succinate) (PBS) were prepared using a single screw extruder at various take-up speeds. Changes in fiber structure, morphology and physical properties were investigated using sonic velocity ...
Polymer gel dosimeter based on itaconic acid
(2015-11)
A new polymeric dosimeter based on itaconic acid and N, N'-methylenebisacrylamide was studied. The preparation method, compositions of monomer and crosslinking agent and the presence of oxygen in the dosimetric system were ...
Biocomposites of Low-Density Polyethylene PlusWood Flour or Flax Straw: Biodegradation Kinetics across Three Environments
(MDPI journals, 2021-06-29)
The purpose of this study was to assess the potential for biocomposite films to biodegrade in diverse climatic environments. Biocomposite films based on polyethylene and 30 wt.% of two lignocellulosic fillers (wood flour ...
Bioprospección de bacterias obtenidas de suelo y su aplicación potencial en la producción de polihidroxialcanoatos (PHAs)
(Universidad Nacional (Costa Rica), 2019)
Los plásticos sintéticos ocasionan una grave problemática ambiental debido a que son muy resistentes y su degradación es muy lenta, por lo que se acumulan y persisten en el ambiente. Esto ocasiona la contaminación de cuerpos ...
Desarrollo de materiales poliméricos para dosimetría de rayos-x con sensibilidad óptica mejorada
(Centro de Investigaciones en Laseres y Aplicaciones, 2020-10)
En este trabajo se estudia el uso de un nuevo agente, capaz de formar complejos coloreados con iones metálicos, para su
uso en dosimetría de Rayos-X (RX), con el objetivo de evaluar su efecto sobre la sensibilidad a la ...
Exploration of Bioengineered Scaffolds Composed of Thermo-Responsive Polymers for Drug Delivery in Wound Healing
(MDPI AG, 2021-01-30)
Innate and adaptive immune responses lead to wound healing by regulating a complex series of events promoting cellular cross-talk. An inflammatory response is presented with its characteristic clinical symptoms: heat, pain, ...
Synthesis of a metal chelating monomer for radiation polymer dosimetry
(Elsevier Ltd, 2021-03)
To enhance the performance of polymeric dosimeters it is necessary to design novel formulations considering the mechanisms that register the absorbed dose (e.g. induced polymerization) and the readout method. The combination ...
Producción de un biocompuesto a base de almidón termoplástico de yuca amarga (Manihot esculenta crantz) y nanocelulosa obtenida de rastrojo de piña (Ananas comosus)
(Universidad Nacional (Costa Rica), 2021)
En este estudio se produjo un biocompuesto a base de almidón termoplástico de yuca (Manihot esculenta Crantz) y nanocelulosa obtenida de rastrojo de piña (Ananas comosus), la elaboración de este bioplástico se presenta ...
On the comparison between diafiltration and isothermal titration calorimetry: Determination of the amount of analytes bound to watersoluble polymers
(Elsevier Ltd, 2019)
Aqueous systems composed of low molecular-weight species (LMWS) and water-soluble polymers (WSP) present
important technological applications. Therefore, continuous advances on characterization techniques are crucial
to ...
Electrospun nanofibers: A nanotechnological approach for drug delivery and dissolution optimization in poorly water-soluble drugs
(International Association of Physical Chemists, 2020)
Electrospinning is a novel and sophisticated technique for the production of nanofiberswithhigh surface area, extreme porous structure, small pore size, and surface morphologies that make them suitable ...