Browsing by Subject "Polímers"
Now showing items 1-20 of 446
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3D Printing of bioresorbable polymeric cardiovascular stents
(Universitat Politècnica de Catalunya, 2022-10-25)
Bachelor thesis
Open AccessLes malalties cardiovasculars són un dels principals problemes de salut a tot el món. Per això, la utilització d'stents com una de les solucions mèdiques per tractar l’oclusió de l’arteria, aterosclerosis, deguda a depòsit ... -
3D-printed polymer-infiltrated ceramic network with biocompatible adhesive to potentiate dental implant applications
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-09-23)
Article
Open AccessThe aim of this work was to prepare and characterize polymer–ceramic composite material for dental applications, which must resist fracture and wear under extreme forces. It must also be compatible with the hostile environment ... -
A green strategy for the synthesis of poly(ethylene succinate) and its copolyesters via enzymatic ring opening polymerization
(2017-10)
Article
Open AccessPoly(ethylene succinate) (PES) with weight-average molecular weight above 60,000 g mol-1 was efficiently obtained by enzymatic ring opening polymerization of cyclic oligo(ethylene succinate)s c(ES)n, which in turn were ... -
A multi-step template-assisted approach for the formation of conducting polymer nanotubes onto conducting polymer films
(2016-04-25)
Article
Open AccessAfter exhibiting the important limitations of the template-assisted approach when electropolymerization on simple stainless steel electrodes and electrospinning of insulating polymeric templates are combined, hollow ... -
A new method to obtain information about the pore size distribution in microporous polymeric membranes
(2008-03)
Article
Restricted access - publisher's policyTransport measurements of selected fluids through porous membranes provide information on precise statistical moments of the membrane pore-size distribution (PSD). It is assumed that membrane porosity, ~T,is distributed ... -
A phenomenological-based dynamic model for a polymer electrolyte membrane fuel-cell humidifier assembly
(2022-11-01)
Article
Open AccessThis paper presents the deduction of a phenomenological-based semi-physical model (PBSM) for the gas humidification in a fuel-cell assembly. Unlike previously published models, the one proposed here includes the momentum ... -
A phosphonated poly(ethylenedioxythiophene) derivative with low oxidation Potential for energy-efficient bioelectronic devices
(American Chemical Society, 2021-12-28)
Article
Open AccessOrganic electrochemical transistors (OECTs) for bioelectronic applications require the design of conjugated polymers that are stable in aqueous environments and afford high energy efficiency and good performance in OECTs. ... -
A simple treatment for the irreversible optimization of the electrical conductivity of Poly(3,4-ethylenedioxythiophene)
(2017-04)
Article
Open AccessCompact and porous films of poly(3,4-ethylenedioxythiophene) (PEDOT), which were prepared in aqueous and acetonitrile solutions, have been submitted to a simple thermal treatment that provokes irreversible changes in the ... -
A study of etching conditions and resolution power of plastic detector CR-39
(Pergamon Press, 1984)
Article
Open AccessTwo Pershore Stacks (32 h cure cycle and 1% DOP and 96 h cure cycle and no additive) have been exposed to the Berkeley Bevalac Argon beam at 285 MeV/nuc and 425 MeV/nuc, respectively. Optimum previous termetching conditionsnext ... -
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 ... -
A sustainable approach to produce stiff, super-tough, and heat-resistant poly(lactic acid)-based green materials
(American Chemical Society (ACS), 2019-04-15)
Article
Open AccessCircumventing inherent embrittlement, poor heat resistance, and melt elasticity of poly(lactic acid) (PLA) without compromising its remarkable stiffness and strength has become a particular challenge in polymer science due ... -
Acción de los polímeros de carboxilato en el lavado sin fosfatos de tejido de algodón aprestado.
(Instituto de Investigación Textil y Cooperación Industrial, 1998-07)
Article
Open AccessA partir de un tejido de algodón sin apresto y aprestado con la resina DMDHEU, se evaluó la eficiencia detersiva a 25°HF obtenida con la inclusión de los copolímeros de ácido acrílico/ácido maléico (sal de sodio) y zeolita ... -
Acetoacetate based thermosets prepared by dual-Michael addition reactions
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-01)
Article
Open AccessA novel set of dual-curable multiacetoacetate-multiacrylate-divinyl sulfone ternary materials with versatile and manipulable properties are presented. In contrast to common dual-curing systems, the first stage polymer ... -
Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-01)
Article
Open Accessn this work, a new family of poly(thiourethane) shape memory thermosetting actuators was developed and characterized. These materials can be easily prepared from mixtures of two different aliphatic diisocyanates and a ... -
Aliphatic polyamides (nylons): Interplay between hydrogen bonds and crystalline structures, polymorphic transitions and crystallization
(Wiley, 2021-08-13)
Article
Open AccessAliphatic polyamides (nylons) constitute a family of polymers with outstanding properties and multiple applications. Despite the intensive research studies carried out with nylons, there are still multiple unsolved questions ... -
Amorphous solid dispersions of curcumin in a poly(ester amide): antiplasticizing effect on the glass transition and macromolecular relaxation dynamics, and controlled release
(2023-09)
Article
Open AccessIn order to exploit the pharmacological potential of natural bioactive molecules with low water solubility, such as curcumin, it is necessary to develop formulations, such as amorphous polymer dispersions, which allow a ... -
Amphiphilic ionic complexes of hyaluronic acid with organophosphonium compounds and their antimicrobial activity
(2018-01-01)
Article
Open AccessAmphiphilic ionic complexes of hyaluronic acid and alkyltrimethylphosphonium soaps with alkyl chains containing even numbers of carbons from 12 to 22 have been produced. The complexes have a nearly stoichiometric composition, ... -
An amphiphilic, heterografted polythiophene copolymer containing biocompatible/biodegradable side chains for use as an (electro)active surface in biomedical applications
(2019-09-28)
Article
Open AccessGiven that the copolymers of complex topology and composition are at the forefront of multifunctional materials research, this work reports aboutan amphiphilic random, heterografted copolymer of ... -
An overview of the methods to characterise human bone tissue with particular reference to osteoporosis
(Universitat Politècnica de Catalunya, 2018-10-31)
Bachelor thesis
Open AccessThe goal of this work is to make an overview of the current methods that allow bone quality assessment, its advantages and drawbacks, as well as its application in the treatment of diseases such as osteoporosis. -
Anàlisi de la contribució a tallant dels reforços exteriors amb laminats de polímers reforçats amb fibres (FRP) en bigues de formigó armat
(Universitat Politècnica de Catalunya, 2012-07)
Minor thesis
Open Access[ANGLÈS] (...) Nowadays, the existing guides and recommendations propose calculating shear capacity by adding the contribution of the concrete and the passive reinforcement. In FRP reinforced elements, existing models ...
