Exploració per tema "Copolymers"
Ara es mostren els items 1-20 de 73
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2,7-Linked N-methylcarbazole copolymers by combining the macromonomer approach and the oxidative electrochemical polymerization
(2019-05-03)
Article
Accés obertThe preparation of copolymers bearing N-methylcarbazole and 2,7-linked 3,4-ethylenedioxythiophene units has been carried out using the N-methyl-2,7-di(2-(3,4-ethylenedioxythienyl))carbazole monomer, which has been chemically ... -
A biodegradable copolyester, poly(Butylene succinate-co-e-caprolactone), as a high efficiency matrix former for controlled release of drugs
(2021-07-01)
Article
Accés obertA biodegradable copolyester, poly(butylene succinate-co-e-caprolactone) (PBS_CL), was used for first time as an excipient for pharmaceutical dosage forms using direct compression and hot processing techniques (ultrasound-assisted ... -
Anhydric maleic functionalization and polyethylene glycol grafting of lactide-co-trimethylene carbonate copolymers
(2014-09-01)
Article
Accés restringit per política de l'editorialLactide 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 ... -
Atomistic organization and characterization of tube-like assemblies comprising peptide-polymer conjugates: computer simulation studies
(2013)
Article
Accés obertThe structure and stability of the nanotube obtained by assembling peptide-polymer conjugates consisting of two poly(n-butyl acrylate) blocks coupled to the cyclic (D-alt-L)-octapeptide cyc[(L-Gln-D-Ala-L-Lys-D-Ala)(2)], ... -
Bio-based aromatic polyesters and copolyesters by ring opening polymerization
(2016)
Comunicació de congrés
Accés obertIn this work, the synthesis of both c(BF)n and c(BT)n has been performed using the high dilution cyclization technique and these cycles have been then used for the preparation of the homopolyesters PBF and PBT, as well as ... -
Bio-based poly(butylene terephthalate) copolyesters containing bicyclic diacetalized galactitol and galactaric acid: Influence of composition on properties
(Elsevier, 2012-07-19)
Article
Accés restringit per política de l'editorialCopolyesters from 1,4-butanediol, dimethyl terephthalate and either 2,3:4,5-di-O-methylene-galactitol or dimethyl 2,3:4,5-di-O-methylene-galactarate with compositions of 10, 20, 30, 40 and 50% of either galactitol or ... -
Bio-based poly(ethylene terephthalate) copolyesters made from cyclic monomers derived from tartaric acid
(Elsevier, 2014-05-13)
Article
Accés restringit per política de l'editorialTwo cyclic acetal compounds, 2,3-O-methylene L-threitol and dimethyl 2,3-O-methylene L-threarate, both coming from naturally-occurring tartaric acid, were used as comonomers to replace ethylene glycol and dimethyl terephthalate ... -
Biodegradability and biocompatibility of copoly(butylene sebacate-co-terephthalate)s
(2017-01-01)
Article
Accés obertIn 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 ... -
Block and graft copolymers made of 16-membered macrolactones and l-Alanine: a comparative study
(2019-08-01)
Article
Accés obertBlock and graft poly(macrolactone)-poly(a-amino acid) copolymers made of l-alanine and pentadecalactone or globalide respectively, are prepared. A sequential ring-opening polymerization (ROP) copolymerization route consisting ... -
Caracterización del comportamiento a fractura de un polipropileno copolímero espumado
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialEn el presente trabajo se ha aplicado el concepto de Trabajo Esencial de Fractura (EWF) a un copolímero etilenopropileno en bloque (EPBC) espumado, cuyas características morfológicas y mecánicas eran conocidas. Las ... -
Carbohydrate-based PBT copolyesters from a cyclic diol derived from naturally occurring tartaric acid: a comparative study regarding melt polycondensation and solid-state modification
(2014-04-01)
Article
Accés restringit per política de l'editorial2,3-O-Methylene-L-threitol (Thx) is a cyclic carbohydrate-based diol prepared by acetalization and subsequent reduction of the naturally occurring tartaric acid. The structure of Thx consists of a 1,3-dioxolane ring with ... -
Cell responses to electrical pulse stimulation for anticancer drug release
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
Article
Accés obertElectrical stimulation is an attractive approach to tune on-demand drug release in the body as it relies on simple setups and requires typically 1 V or less. Although many studies have been focused on the development of ... -
Challenging isodimorphism concepts: formation of three crystalline phases in poly(hexamethylene-ran-octamethylene carbonate) copolymers
(American Chemical Society (ACS), 2023-10-11)
Article
Accés obertIn this work, poly(hexamethylene-ran-octamethylene carbonate) copolycarbonates were synthesized by melt polycondensation in a wide range of compositions. The copolymers displayed some of the characteristic isodimorphic ... -
Chemical structure and microstructure of poly(alkylene terephthalate)s, their copolyesters, and their blends as studied by NMR
(2014-11-17)
Article
Accés restringit per política de l'editorialThe use of NMR spectroscopy in solution to investigate the chemical structure of engineering poly(alkylene terephthalate)s such as poly(ethylene terephthalate) (PET), poly(trimethylene terephthalate) (PTT), and poly(butylene ... -
Controlling the isothermal crystallization of isodimorphic PBS-ran-PCL random copolymers by varying composition and supercooling
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-01)
Article
Accés obertIn this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(e-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us. We perform ... -
Copolymacrolactones grafted with L-glutamic acid: Synthesis, structure, and nanocarrier properties
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-24)
Article
Accés obertThe enzymatic ring-opening copolymerization (eROP) of globalide (Gl) and pentadecalactone (PDL) was performed in solution from mixtures of the two macrolactones at ratios covering the whole range of comonomeric compositions. ... -
Crystalline structures and structural transitions of copolyamides derived from 1,4-diaminobutane and different ratios of glutaric and azelaic acids
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-01)
Article
Accés obertCopolyamides derived from even 1,4-butanediamine and different mixtures of odd dicarboxylic acids with a great difference in the number of methylene groups (i.e., glutaric and azelaic acids with 3 and 7 groups, respectively) ... -
Desenvolupament de sutures monofilars bioabsorbibles de naturalesa segmentada amb activitat farmacològica
(Universitat Politècnica de Catalunya, 2014-03)
Projecte/Treball Final de Carrera
Accés obertEn les últimes dècades, l’estudi en el desenvolupament de sutures absorbibles ha portat a la creació de fils de sutura amb característiques diverses i focalitzades a usos concrets. La incorporació de compostos actius en ... -
Effect of a dithiobenzoate as a RAFT agent on aqueous radical polymerization and analysis by GPC
(Universitat Politècnica de Catalunya, 2014-02)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThis work has been made in a company named DERYPOL SA for the purpose of obtaining narrow polydispersity index and high molecular weight MAAc/Na-AMPS copolymers. As the molecular weight is a very important parameter for ... -
Effect of hydroxyapatite nanoparticles on the degradability of random poly(butylene terephthalate-co-aliphatic dicarboxylate)s having a high content of terephthalic units
(2016-07-06)
Article
Accés obertCopolyesters derived from 1,4-butanediol and constituted also of aliphatic and aromatic dicarboxylate units in a molar ratio of 3:7 were synthesized by a two-step polycondensation procedure. Succinic, adipic, and sebacic ...