A5081005158- Polymer composites and self-healing
- Carbon dioxide utilization in catalysis
- biodegradable polymer synthesis and properties
- Silicone and Siloxane Chemistry
- Synthesis and properties of polymers
- Advanced Polymer Synthesis and Characterization
- Polymer crystallization and properties
- Surface Modification and Superhydrophobicity
- Photopolymerization techniques and applications
- Flame retardant materials and properties
- Electrospun Nanofibers in Biomedical Applications
- Microplastics and Plastic Pollution
- Advanced Sensor and Energy Harvesting Materials
- Synthetic Organic Chemistry Methods
- Polymer Nanocomposites and Properties
- Conducting polymers and applications
- Marine Biology and Environmental Chemistry
- Surfactants and Colloidal Systems
- Photochromic and Fluorescence Chemistry
- Lignin and Wood Chemistry
- Block Copolymer Self-Assembly
- Marine Sponges and Natural Products
- Polymer Foaming and Composites
- Antimicrobial agents and applications
- Chemical Thermodynamics and Molecular Structure
Polymat
2016-2025
University of the Basque Country
2016-2025
Ayuntamiento de San Sebastián
2017-2019
We explore the utilization of aromatic diselenides as new low temperature exchangeable monomers for their in thermosets.
A complete study of the effect different organocatalysts on step-growth polyaddition a five-membered dicyclic carbonate, namely diglycerol dicarbonate, with poly(ethylene glycol)-based diamine in bulk at 120 °C was first carried out. The reaction found to be dramatically catalyst-dependent, higher rates being observed presence strong bases, such as phosphazenes (t-Bu-P4 or P4) and 5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). Unexpectedly, as-formed urethane linkages entirely vanished time,...
Various bases (DMAP, DBU, TBD, t -BuOK), acid ( p -TSA), thiourea (TU) and organometallic Lewis (DBTDL) were investigated as potential catalysts for the preparation of polyhydroxyurethane covalent adaptable networks.
Wood has limited fire-retardant properties but this can be improved by using coatings with sustainable and cost-effective flame retardants. For purpose, lignin is a potential candidate due to its highly aromatic structure low cost. However, should modified achieve good fire behaviour. Thus, phosphorus was incorporated into kraft the compounds obtained were used for synthesis of two types wood coatings: Polyurethanes Polyacrylates. Phosphorus nuclear magnetic resonance characterize lignin,...
Escalating environmental concerns driven by continuous demand for fossil-based materials have sparked a growing interest in designing biobased polymeric high-added-value applications. A novel series of self-blowing polycarbonate foams...
Abstract Waterborne polyurethane (PU) dispersions were prepared from isophorone diisocyanate (IPDI), 2‐ bis (hydroxymethyl) propionic acid (DMPA), 1,4‐butane diol (BD), poly(propylene glycol) (PPG), and triethylamine (TEA) by means of phase inversion through the acetone process. Changes in DMPA content, initial PU content acetone, phase‐inversion temperature, evaporation conditions, solvent nature found to have a great impact on dispersion properties. Using concentration 0.30 mmol/g pol ,...
Aromatic disulfide dynamic structures were incorporated as chain extenders in waterborne organic-inorganic polyurethane hybrids order to provide autonomic healable characteristics.The synthesis was carried out following the acetone process methodology and influence of introduction healing agents polymer dispersion stability analyzed.After crosslinking at room temperature, hybrid films, which presented characteristics, obtained.These features evaluated by means stress-strain tests films...
A novel synthetic strategy to isocyanate-free supramolecular polyhydroxyurethanes based on ionic interactions is described.
Novel supramolecular ionic networks were obtained by reacting citric acid and aliphatic diamines. A proton transfer reaction takes place between the carboxylic of amine group leading to corresponding carboxylate quaternary ammonium groups. By this method, a series due multiple interactions citrate diammonium molecules as observed FTIR spectroscopy. Rheological analysis was carried out considering frequency temperature sweeps in small-amplitude oscillatory flow viscous measurements continuous...
Polyethylene terephthalate (PET) is a nonbiodegradable polymer whose hydrolytic degradation can take decades. Intensive research has been performed to accelerate its without significantly affecting properties. In this work, PET was combined with poly(lactic acid) (PLA), well-known biodegradable polymer, and the effect of PLA content in crystallization component investigated detail. To make process sustainable, polymerized using monomers that be derived from chemical recycling (dimethyl...
Poly(hydroxy urethane)s (PHUs) based on 5-membered cyclic carbonates have emerged as sustainable alternatives to conventional isocyanate-based polyurethanes. However, while from the point of view sustainability they represent an improvement, their properties are still not competitive with In this work, potential PHUs reversible hot-melt adhesives is discussed. We found that a judicious choice reagents (i.e., dicyclic carbonate and diamine), detrimental hydrogen bonding between soft segment...
ABSTRACT Crosslinked self‐healing polyurethanes based on Diels–Alder (DA) reaction were synthesized from a trifunctionalized isophorone diisocyanate (IPDI) and polypropyleneglycol prepolymer with furfuryl alcohol commercial bismaleimide. The DA was followed by FTIR spectroscopy at different temperatures. From the infrared results kinetic rate constants as well reversibility established. retro (rDA) its monitored DSC according to enthalpy involved in process. obtained polymers exhibited...