A5103271819- Polymer Nanocomposites and Properties
- Polymer composites and self-healing
- Occupational Health and Safety in Workplaces
- Polymer crystallization and properties
- Dielectric materials and actuators
- Polymer Nanocomposite Synthesis and Irradiation
- Tribology and Wear Analysis
- Synthesis and properties of polymers
- NMR spectroscopy and applications
- Silicone and Siloxane Chemistry
- Carbon Nanotubes in Composites
- Science, Technology, and Education in Latin America
- Tree Root and Stability Studies
- Soil erosion and sediment transport
- Supramolecular Self-Assembly in Materials
- Material Properties and Applications
- Adsorption, diffusion, and thermodynamic properties of materials
- Photopolymerization techniques and applications
- Law, Ethics, and AI Impact
- Polymer Synthesis and Characterization
- Engineering and Information Technology
- Additive Manufacturing and 3D Printing Technologies
- Landslides and related hazards
- Nuclear Issues and Defense
- Business, Education, Mathematics Research
Asociacion de Investigacion de Materiales Plasticos y Conexas
2023-2025
Universidad Internacional De La Rioja
2025
Universidad Rey Juan Carlos
2020-2022
Instituto de Ciencia y Tecnología de Polímeros
2014-2022
National Research Council
2014
The network structure and chain dynamics of ionic elastomers based on carboxylated nitrile rubber (XNBR) cross-linked with different content magnesium oxide (MgO) have been studied by low-field time-domain NMR experiments. Ionic contacts created during the vulcanization tend to aggregate trapping some polymer segments that show restricted mobility as it was quantified analyses refocused free induction decays. Increasing MgO above stoichiometric fraction has no effect amount trapped segments,...
Shape-memory elastomers based on a commercial rubber cross-linked by both ionic and covalent bonds have been developed. The elastomeric matrix was carboxylated nitrile (XNBR) vulcanized with magnesium oxide (MgO) providing interactions that form hierarchical structures. so-named transition is used as the unique thermal responsible for shape-memory effect (SME) in these elastomers. These fix temporary shape due to their behavior dynamic cross-links temperature changes. Covalent were...
Abstract The present paper explores the development of novel recyclable and reprocessable nanocomposites with enhanced shape memory (SM) capability Digital Light Processing 3D printing technology. More specifically, developed Covalent Adaptable Network is based on polyurethane containing Diels Alder bonds reinforced carbon nanotubes (CNTs), where dynamic enable recyclability reprocessability, whereas CNT addition allows obtaining electrically conductive nanocomposites. In this sense,...
The importance of sustainable polymers has increased greatly in the last years since most are derived from non-renewable sources. Sustainable (i.e., biopolymers) such as natural rubber (NR) proposed a solution for this concern. A comparative study between NR and deproteinized (DPNR) was carried out to elucidate role proteins on network formation degradation peroxide cross-linked using time-domain NMR experiments. 1H multiple-quantum (MQ) experiments provided information cross-link density...
This study demonstrates that the curing reaction of thermosetting polymers, in particular, epoxy resins cured with aliphatic amines, can be characterized by different multiple-quantum (MQ) NMR experiments performed low-field spectrometers. Measurements at 40 °C, 70 and 100 °C are carried out to obtain kinetic parameters like induction time, vitrification polymerization rate, activation energy being consistent data obtained other traditional complementary techniques. Besides, it is...
This study evaluates the formation of radical species in natural rubber (NR) and poly-isoprene (IR) during vulcanization process uniaxial deformation formed networks by means Electron Spin Resonance (ESR).Vulcanization NR IR always shows a pathway, where different systems dictate concentration course this complex process.The greatest radicals were detected with sulfur/accelerator based on efficient (EV), followed conventional (CV) sulfur donor systems, whereas azide organic peroxide agents...
The major controlling factors that determine the various mechanical properties of an elastomer system are type chemical crosslinking and crosslink density polymer network. In this study, a catalytic amount acrylonitrile butadiene copolymer (NBR) was used as co-accelerator for curing polybutadiene (BR) elastomer. After addition along with other conventional sulphur ingredients in compounds, clear distinct effect on physical characteristics noticed. BR increased, evidenced by rheometric...
Shape-memory polymers tend to present rigid behavior at ambient temperature, being unable deform in this state. To obtain soft shape-memory elastomers, composites based on a commercial rubber crosslinked by both ionic and covalent bonds were developed, as these materials do not lose their elastomeric below transition (or activation) temperature (using for such purpose). The introduction of fillers, carbon black multiwalled nanotubes (MWCNTs), was studied compared with the unfilled matrix. By...
The outstanding properties of carbon nanotubes (CNTs) present some limitations when introduced into rubber matrices, especially these nano-particles are applied in high-performance tire tread compounds. Their tendency to agglomerate bundles due van der Waals interactions, the strong influence CNT on vulcanization process, and adsorptive nature filler–rubber interactions contribute increase energy dissipation phenomena rubber–CNT Consequently, their expected performance terms rolling...
<abstract> <p>In this work, a novel method for more sustainable recycling and cost-efficient manufacturing technique of polyether ketone (PEKK) based thermoplastic composite materials is proposed to recover reprocess waste end-of-life in the aerospace industry. For carbon fiber reinforced thermoplastics (CFrTP), an innovative scrapping process on mechanical cutting was developed properties obtained scrap recycled panel were analyzed. Thus, tool delamination input material so that...