Mostrar el registro sencillo del ítem
dc.contributor.author
Chiacchiarelli, Leonel Matias
dc.contributor.author
Monsalve, Leandro Nicolas
dc.contributor.author
Vazquez, Analia
dc.contributor.author
Kenny, José M.
dc.contributor.author
Torre, Luigi
dc.date.available
2017-06-22T19:35:26Z
dc.date.issued
2014-08
dc.identifier.citation
Chiacchiarelli, Leonel Matias; Monsalve, Leandro Nicolas; Vazquez, Analia; Kenny, José M.; Torre, Luigi; A Polycaprolactone-Based Compatibilization Treatment to Improve Dispersion and Interphase Structure of Silica Polyurethane Composites; Wiley; Polymer Engineering And Science; 54; 8; 8-2014; 1817-1826
dc.identifier.issn
0032-3888
dc.identifier.uri
http://hdl.handle.net/11336/18702
dc.description.abstract
Silica nanoparticles (SNs) were grafted with ecaprolactone using an environmentally friendly approach. By using tartaric acid as a catalyst and the silanol groups as initiators, grafted nanoparticles (GNs) with organic weight fractions (wof) within the range 0–46 wt% were synthesized. Thermogravimetric (TGA) and infrared analysis were used to measure the wof and to corroborate the covalent bond between the SN and the caprolactone monomer. Transmission electron micrographs of the polyurethane (PU) nanocomposites based on the SN and the GN revealed that the interfacial area of the GNbased PU increased by the reduction of agglomerate dimensions from 10 mm to around 0.1 mm. Dynamic mechanical analysis showed that the GN nanocomposites improved the storage shear modulus from 616611 to 84968 MPa for a GN with wof5 16.7% and 3 wt% filler concentration. In addition, the GN particles prevented a relevant decrease of the transition temperature (Tg). Differential scanning calorimetry corroborated that GN increased the enthalpic energy associated to the physical crosslinking of the hard segments (HS). Wide-angle X-ray diffraction proved that the GN formed a HS structure with improved crystallinity. The thermal stability of the GN-based PU a nanocomposite was improved by an increase of the thermal stability of the castor oil soft segments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Polycaprolactone
dc.subject
Polyurethane
dc.subject
Silica
dc.subject
Nanocomposite
dc.subject.classification
Compuestos
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
A Polycaprolactone-Based Compatibilization Treatment to Improve Dispersion and Interphase Structure of Silica Polyurethane Composites
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-19T18:28:17Z
dc.journal.volume
54
dc.journal.number
8
dc.journal.pagination
1817-1826
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Chiacchiarelli, Leonel Matias. Universita Di Perugia; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Monsalve, Leandro Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
dc.description.fil
Fil: Vazquez, Analia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
dc.description.fil
Fil: Kenny, José M.. Universita Di Perugia; Italia. Consejo Superior de Investigaciones Cientificas; España
dc.description.fil
Fil: Torre, Luigi. Universita Di Perugia; Italia
dc.journal.title
Polymer Engineering And Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/pen.23723
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pen.23723/abstract
Archivos asociados