Browsing by Subject "Polymers--Biodegradation"
Now showing items 1-20 of 27
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Anhydric maleic functionalization and polyethylene glycol grafting of lactide-co-trimethylene carbonate copolymers
(2014-09-01)
Article
Restricted access - publisher's policyLactide and trimethylene carbonate copolymers were successfully grafted with polyethylene glycol via previous functionalization with maleic anhydride and using N,N'-diisopropylcarbodiimide as condensing agent. Maleinization ... -
Biodegradability and biocompatibility of copoly(butylene sebacate-co-terephthalate)s
(2017-01-01)
Article
Open AccessIn the present study poly (butylene sebacate-co-terephthalate)s having different compositions were synthesized with a high yield and a random distribution by thermal transesterification of poly (butylene sebacate) and poly ... -
Biodegradable copolyesters of poly(hexamethylene terephthalate) containing bicyclic 2,4:3,5-di-O-methylene-D-glucarate units
(2014-11-01)
Article
Restricted access - publisher's policyA set of copolyesters (PHTxGluxy) with compositions ranging between 90/10 and 50/50 in addition to the parent homopolyesters poly(hexamethylene terephthalate) (PHT) and PHGlux, are prepared by the melt polycondensation of ... -
Biodegradable nanofibrous scaffolds as smart delivery vehicles for amino acids
(2017)
Article
Open AccessThe encapsulation of amino acids (AAs) and their correct preservation before they are ingested are challenging tasks. Nonpolar (l-alanine and l-phenylalanine), polar (l-cysteine hydrochloride and l-asparagine), and charged ... -
Disseny d'un embolcall auto-refredant
(Universitat Politècnica de Catalunya, 2016-09-05)
Master thesis
Open Access -
Electrospun scaffolds from low molecular weight poly(ester amide)s based on glycolic acid, adipic acid and odd or even diamines
(2015-05-12)
Article
Open AccessElectrospinning of regular poly(ester amide)s (PEAs) constituted by glycolic acid, adipic acid and diamines with five and six carbon atoms has been carried out. Selected PEAs were constituted by natural origin products and ... -
Evaluation of the influence of the addition of biodegradable polymer matrices in the formulation of self-curing polymer systems for biomedical purposes
(2009-10)
Article
Restricted access - publisher's policyThe solid phase of self-curing formulations of poly(methyl methacrylate) was modified by different biodegradable polymer matrices, such as poly(L-lactic acid), poly(b-hydroxybutyrate) and thermoplastic starches (TPSs). ... -
Hybrid polypeptide/polylactide copolymers with short phenylalanine blocks
(2018-07-29)
Article
Open AccessHybrid copolymers constituted by short l-phenylalanine (Phe) blocks (i.e., Phen with n ranging from 2 to 25) and l-lactide blocks of different length are synthesized and characterized. The diblock structure is obtained by ... -
Hydrolytic and enzymatic degradation of biobased poly(4-hydroxybutyrate) films. Selective etching of spherulites
(2021-01)
Article
Open AccessHydrolytic degradation of poly(4-hydroxybutyrate) (P4HB) films has been studied considering media of different pH values (i.e., 3, 7 and 10) and temperatures (i.e., 37 and 55 °C). Enzymatic degradation has also been evaluated ... -
Incorporació d'un anàleg sintètic al factor de creixement de fibroblasts (FGF) en sutura quirúrgica monofilar
(Universitat Politècnica de Catalunya, 2018-05)
Bachelor thesis
Open AccessTant en Medicina com Farmàcia les sutures sintètiques reabsorbibles formen una de les aplicacions més importants dels polímers biodegradables. Avui dia es segueixen desenvolupant noves sutures amb un valor afegit, normalment ... -
Incorporación de bacteriófagos en fibras de polietilenglicol (PEG) envueltas en fibras de mezclas de ácido polilácticopolietilenglicol (PLA/PEG) por electrohilado coaxial
(Universitat Politècnica de Catalunya, 2018-05)
Bachelor thesis
Open AccessEn este proyecto se ha estudiado el encapsulamiento de bacteriófagos específicos del Staphylococcus aureus en scaffolds constituidos por microfibras coaxiales de dos polímeros biodegradables de diferentes hidrofobicidades: ... -
Influence of temperature on high molecular weight poly(lactic acid) stereocomplex formation
(2019-02-01)
Article
Open AccessThe influence of temperature on the formation of high molecular weight poly(lactic acid) (PLA) stereocomplex was studied by evaluation of the precipitates from dioxane solutions of PLA enantiomers (PLLA and PDLA). The ... -
Isothermal and non-isothermal crystallization kinetics of a polyglycolide copolymer having a tricomponent middle soft segment
(2014-06-10)
Article
Restricted access - publisher's policyKinetics of isothermal and non-isothermal crystallization studies of a biodegradable monofilament suture constituted by polyglycolide hard blocks and soft segments derived from glycolide, epsilon-caprolactone and trimethylene ... -
Isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
Article
Open AccessThermal properties and crystallization kinetics of poly(4-hydroxybutyrate) (P4HB) have been studied. The polymer shows the typical complex melting behavior associated to different lamellar populations. Annealing processes ... -
Matriu de multicapes d'edot elecropolimeritzat i micro/nanofibres biodegradables d'àcid polilàctic
(Universitat Politècnica de Catalunya, 2018-05)
Bachelor thesis
Open AccessAl projecte s’ha realitzat un estudi de la preparació de sistemes de tres i cinc capes d’un biopolímer com és l’àcid polilàctic (PLA) i un polímer conductor, el Poly(3,4-ethylenedioxythiophene) (PEDOT) intercalats, per ... -
Microfibres of conducting polythiophene and biodegradable poly(ester urea) for scaffolds
(2015-01-01)
Article
Open AccessHybrid scaffolds constituted of a mixture of conducting and biodegradable polymers are obtained by the electrospinning technique. Specifically, poly(3-thiophene methyl acetate) (P3TMA) and a copolymer derived from L-leucine, ... -
New poly(ester urea) derived from L-leucine: Electrospun scaffolds loaded with antibacterial drugs and enzymes
(Elsevier, 2015-01-01)
Article
Open AccessElectrospun scaffolds from an amino acid containing poly(ester urea) (PEU) were developed as promising materials in the biomedical field and specifically in tissue engineering applications. The selected poly(ester urea) ... -
Poly(butylene succinate-ran-epsilon-caprolactone) copolyesters: Enzymatic synthesis and crystalline isodimorphic character
(2017-10-01)
Article
Open AccessIn this paper, the preparation of PBS-ran-PCL copolyesters by enzymatic ring opening polymerization is presented for the first time. The copolyesters were produced in a wide composition range and free of metallic contaminants, ... -
Scaffolds with tunable properties constituted by electrospun nanofibers of polyglycolide and poly(e-caprolactone)
(2018-01-01)
Article
Open AccessElectrospun 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 ... -
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement
(2014-07-14)
Article
Open AccessBiodegradable polymers are starting to be introduced as raw materials in the food-packaging market. Nevertheless, their price is very high. Starch, a fully biodegradable and bioderived polymer is a very interesting alternative ...
