Search Results - "Martínez Urreaga, J."

Effect of simulated mechanical recycling processes on the structure and properties of poly(lactic acid) by Beltrán, F.R., Lorenzo, V., Acosta, J., de la Orden, M.U., Martínez Urreaga, J.

“…The aim of this work is to study the effects of different simulated mechanical recycling processes on the structure and properties of PLA. A commercial grade…”
Get full text

Water-induced structural changes in poly(lactic acid) and PLLA-clay nanocomposites by Beltrán, F.R., de la Orden, M.U., Lorenzo, V., Pérez, E., Cerrada, M.L., Martínez Urreaga, J.

“…The influence of nanoclays on the structural changes of hydrated poly(l-lactic acid) (PLLA) was investigated at two temperatures, above and below its Tg…”
Get full text

Valorization of poly(lactic acid) wastes via mechanical recycling: Improvement of the properties of the recycled polymer by Beltrán, F.R., Barrio, I., Lorenzo, V., del Río, B., Martínez Urreaga, J., de la Orden, M.U.

“…Poly(lactic acid) (PLA) is a biobased polymer that represents one of the most interesting alternatives to fossil-fuel based polymers in food packaging…”
Get full text

Amino-Modified Halloysite Nanotubes to Reduce Polymer Degradation and Improve the Performance of Mechanically Recycled Poly(lactic acid) by Beltrán, F. R., de la Orden, M. U., Martínez Urreaga, J.

“…From an environmental point of view, mechanical recycling is, in general, a good end-of-life option for poly(lactic acid) (PLA), one of the most important…”
Get full text

Effects of Aging and Different Mechanical Recycling Processes on the Structure and Properties of Poly(lactic acid)-clay Nanocomposites by Beltrán, F. R., Ortega, E., Solvoll, A. M., Lorenzo, V., de la Orden, M. U., Martínez Urreaga, J.

“…The growing use of poly(lactic acid) (PLA) and PLA-based nanocomposites in packaging has raised the interest of studying the mechanical recycling of the wastes…”
Get full text

Sustainable eco-composites obtained from agricultural and urban waste plastic blends and residual cellulose fibers by Martínez Urreaga, J., González-Sánchez, C., Martínez-Aguirre, A., Fonseca-Valero, C., Acosta, J., de la Orden, M.U.

“…The use of blends of recycled agricultural plastic and post-consumer high-density polyethylene from municipal solid wastes, as matrices for sustainable…”
Get full text

Polymer degradation during the melt processing of clay reinforced polycarbonate nanocomposites by de la Orden, M.U., Pascual, D., Antelo, A., Arranz-Andrés, J., Lorenzo, V., Martínez Urreaga, J.

“…During the melt processing of nanocomposites with layered silicates, polycarbonates (PC) suffer a severe degradation which causes a great reduction of the…”
Get full text

Enhancement of mechanical properties of waste-sourced biocomposites through peroxide induced crosslinking by González-Sánchez, C., Martínez-Aguirre, A., Pérez-García, B., Acosta, J., Fonseca-Valero, C., de la Orden, M.U., Sánchez, C., Martínez Urreaga, J.

“…The enhancement of mechanical performance of waste-sourced biocomposites through peroxide induced crosslinking was investigated in order to expand their range…”
Get full text

Fourier Transform Infrared Spectroscopy study of polymorphism in propylene-co-1-pentene copolymers: Trigonal form identification by Arranz-Andrés, J., de la Orden, M.U., Martínez Urreaga, J., Gómez-Elvira, J.M., Pérez, E., Cerrada, M.L.

“…[Display omitted] •The trigonal δ form in propylene-co-1-pentene copolymers is identified by FTIR.•The real time evolution of IR regularity bands during…”
Get full text

Chemical interactions and yellowing in chitosan-treated cellulose by Urreaga, J. Martínez, de la Orden, M.U.

“…The chemical interactions between cellulose and chitosan were studied in chitosan-treated celluloses using diffuse reflectance spectroscopic techniques (UV–Vis…”
Get full text

Polymorphism in a metallocenic isotactic polypropylene as revealed by means of FTIR spectroscopy: Influence of the processing conditions by Lorenzo, V., Polo-Corpa, M.J., Pérez, E., Benavente, R., de la Orden, M.U., Martínez-Urreaga, J.

“…The polymorphic structure in specimens of a metallocenic isotactic polypropylene, processed under different conditions, has been studied by means of wide‐angle…”
Get full text

Effect of different mechanical recycling processes on the hydrolytic degradation of poly(l-lactic acid) by Beltrán, F.R., Lorenzo, V., de la Orden, M.U., Martínez-Urreaga, J.

“…The growing production of poly(lactic acid) (PLA) has increased the interest for the mechanical recycling of this polymer. The main objective of this work is…”
Get full text

Tube shelters from agricultural plastic waste: An example of circular economy by Martínez Urreaga, J., Beltrán, F.R., Acosta, J., Aguinaco, T., Fonseca, C., Ochoa, A., Oliet Palá, J.A., González-Sánchez, C., de la Orden, M.U.

“…The use of recycled plastics in applications similar to those of the original plastic is of great interest for the fulfillment of the circular economy policies…”
Get full text

Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups by de la Orden, M.U., Montes, J.M., Martínez Urreaga, J., Bento, A., Ribeiro, M.R., Pérez, E., Cerrada, M.L.

“…Incorporation of a small content of undecenoic acid is proposed as an approach to introduce polar groups within the macromolecular architecture of high density…”
Get full text

Effects of coupling agents on the oxidation and darkening of cellulosic materials used as reinforcements for thermoplastic matrices in composites by Urreaga, J. Martínez, Matías, M. C., De La Orden, M. U., Munguía, M. A. Lechuga, Sánchez, C. González

“…Oxidation and darkening occur during the processing of composites made from thermoplastic matrices and cellulosic reinforcements. We have studied the effects…”
Get full text

Effect of different coupling agents on the browning of cellulose–polypropylene composites during melt processing by de la Orden, M.U., González Sánchez, C., González Quesada, M., Martínez Urreaga, J.

“…The effects of two coupling agents on the discoloration of cellulose/polypropylene composites during melt processing have been investigated. Composites of…”
Get full text

Mechanical characterisation of virgin and recovered polycarbonate based nanocomposites by means of Depth Sensing Indentation measurements by Lorenzo, V., de la Orden, M.U., Muñoz, C., Serrano, C., Martínez Urreaga, J.

“…[Display omitted] •Mechanical characterisation of nanoclay–polycarbonate nanocomposites by DSI.•Homogeneity of nanofiller distribution assessing by means of…”
Get full text

Study of the effects of the reaction conditions on the modification of clays with polyelectrolytes and silanes by de la Orden, M.U., Arranz, J., Lorenzo, V., Pérez, E., Martínez Urreaga, J.

“…New organically modified clays have been obtained using a polyelectrolyte and a novel bisphenol-A-containing silane as modifiers. The properties and…”
Get full text

Modification of cellulose with amino compounds: A fluorescence study by Martínez Urreaga, J., de la Orden, M.U.

“…Celluloses treated with amino compounds such as polyethylenimines and ethylenediamine show a noticeable fluorescence which depends on the thermal history of…”
Get full text

Novel polypropylene–cellulose composites using polyethylenimine as coupling agent by de la Orden, M.U., González Sánchez, C., González Quesada, M., Martínez Urreaga, J.

“…Novel cellulose reinforced polypropylene composites were obtained using polyethylenimine (PEI) as a coupling agent. Samples of bleached eucalyptus Kraft pulp…”
Get full text