INTEMA

Nanostructured Polymers

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1. Nanostructured Polymers Division (PolNano) Description

PolNano group emerges from reorganization of the research groups of the ex Polymer Division that share objectives, techniques and analysis methods related with NANOSTRUCTURED FUNCTIONAL MATERIALS. The more relevant aspect of these materials is the presence of a nanostructure (1-100 nm) whose characteristics determine its functional properties. The base material (matrix) can belong to any materials family but, with the present group conformation, we are dealing with polymer matrix materials or hybrid organic-inorganic ones. The nanodomains can be formed by an organization of the matrix (for example, segregating hydrophobic domains from hydrophilic ones or ordered structures from disordered ones) or by addition of nanoparticles of different composition and structure to the matrix or to their precursors. The structuration can be produced into different hierarchical levels (nanoscopic, microscopic, mesoscopic) to give the desired material functionality. The kind of functionality shearched is reflected in properties of different types: opticals, electricals, magnetics, biologicals, structurals, etc., derived from the nanostructure generated.

 

Lines of work

Theoretical and computacional modeling

  • Thermodynamic modeling of phase behaviour in liquid-crystalline materials: a) nanoparticle-filled liquid crystals, b) bi-dimensional liquid crystals, c) foto-resposive liquid crystals (azobenzene).
  • Multi-scale thermodynamic modeling of nano-structured polymeric materials: polymer-coated nanoparticles - block copolymers.
  • Theory and simulation of hard spheres mixtures as models of micro- and nano- colloidal systems.

Synthesis of inorganic nanostructures

  • Synthesis of metallic and semiconductor functional nanostructures.
  • In situ generation of metal nanoparticles by photochemical approach.
  • Thermocromic and metallic nanostructures for modulation of light transmittance in smart windows.
  • Determination of growing mechanisms in metallic anisotropic nanostructures obtained from organic complexes.
  • Synthesis of nanocomposites of graphene and graphene oxide from graphite obtained in situ. Production of nanoporous graphene-membrane.
  • Development of polymeric nanocomposites with specific opticals properties based on chromophores and metal nanoparticles.
  • Design of ferrogels based on amphiphilic polymeric gels and functionalized magnetic nanoparticles

Design and synthesis of polymer networks

  •  Modified polymeric networks for the generation of variable transmitance windows.
  • Amphiphilic gels based on PDMS networks and/or monomers bearing alkyl chains. Micro and nanogels with photoinduced response.
  • Self-healing materials based on polymeric networks with interchangeable covalent bonds.
  • Chemically crosslinked networks with shape-memory ability.
  • Development of polymeric systems exhibiting photo-controlable hydrophobicity by the synthesis of azopolymers with fluorinated chains.
  • Polymeric materials produced by photopolymerization reactions (free radical, cationic vinylether, cationic ring-opening and thiol-ene polymerizations). UV and visible photoinitiating systems for different applications such as dental materials, thin films and coatings.
  • Light-cured organic–inorganic hybrid films prepared through the simultaneous polymerization of methacrylate monomers and tetraethoxysilane
  • Silsesquioxanes in crosslinked matrices obtained by photopolymerization: development of novel light-cured dental restorative materials modified. Visible photoinitiator systems based on polyhedral silsesquioxanes bearing side-chain amines.
  • Electrically conducting polymers obtained by photopolymerization of different monomers.

Materials obtained by assembly (building blocks micro, nano and sub-nanometers)

  • Block copolymer self-assembly. Micellar aggregates with potencial use in controlled drug delivery. In situ synthesis of nanoparticles using block copolymer as templates. Nanoparticles embedded in self-assembled block copolymers. Templates for block copolymer lithography. Nanostructured networks modified with amphiphilic block copolymers.
  • Assembly of inorganic nanostructures and poly(silsesquioxanes) for the development of electrocatalysts, hydrophobic films and SERS substrates.
  • Materials for electromagnetic shielding based on polymeric networks modified with carbon nanostructures (graphene, carbon nanotubes)

Structuring by freezing-based processing

  • Development of porous meso/macrostructured bio-hybrid electrodes for unconventional energy generation. Development of meso/macroporous matrices modified by biological components for oxidation of organic matter in waste water. Development of functional materials based on biocompatible hydrogels modified by inorganic nanoparticles. Development of electrically conducting films for in vitro cellular stimulation.

 Nanofabrication

  • Development of surface relief gratings by photoinduction en azobenzene modified polymeric films.
  • Development and characterization of novel conducting inks and coatings based on conductive polymeric matrixes modified with nanosized silver particles.
  • Nanostructured TiO2/Polypyrrole for visible light photocatalysis.
  • Nanocapacitors based on Ag nanoparticles/methacrylate monomers.
  • Developing nanofiber polymer/graphene obtained for electrospinning for application in screening.
  • Synthesis of nanostructured materials with remote actuation capacity based on thermal effects (photothermal, hyperthermal).

Materials and colloid systems optical characterization

  • Optical properties (transmittance, reflectance, thermochromic properties, photochromic properties) of methamaterials based on metallic nanoparticles. Characterization of photothermal effects in nanocomposite materials. Applications of the photothermic effect in novel metals in hyperthermia therapies for medical treatments. Nanoparticle characterization by optical methods: transmittance and light scattering.

Contactos:

Ezequiel Soulé: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Walter Schroeder: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Cristina Hoppe: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Ignacio dell´ Erba: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Claudia Vallo: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Silvana Asmussen: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Ileana Zucchi: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Roberto Williams: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Hernán Romeo: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Elicabe : This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Carmen Riccardi: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Maria J. Galante: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Patricia Oyanguren: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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