Nanostructured rigid polyurethane foams with improved specific thermo-mechanical properties using bacterial nanocellulose as a hard Segment

Chiacchiarelli, Leonel Matías; Benavides, Sara; Armanasco, Franco; Cerrutti, Patricia

Artículo de Publicación Periódica:
Nanostructured rigid polyurethane foams with improved specific thermo-mechanical properties using bacterial nanocellulose as a hard Segment

dc.contributor.author	Chiacchiarelli, Leonel Matías
dc.contributor.author	Benavides, Sara
dc.contributor.author	Armanasco, Franco
dc.contributor.author	Cerrutti, Patricia
dc.date	info:eu-repo/date/embargoEnd/2022-01-27
dc.date.accessioned	2020-10-28T21:53:29Z
dc.date.available	2020-10-28T21:53:29Z
dc.date.issued	2021-01
dc.description.abstract	"Bacterial nanocellulose (BNC) was used to synthesize rigid polyurethane foams (RPUFs) based on its reaction with the isocyanate precursor (ISO route) and also by using the conventional procedure (POL route). The results indicated that at only 0.1 wt. % of BNC, drastic improvements of specific elastic compressive modulus (+244.2 %) and strength (+77.5 %) were found. The reaction of BNC with the precursor was corroborated through the measurement of isocyanate number and the BNC caused a significant nucleation effect, decreasing the cell size up to 39.7%. DSC analysis revealed that the BNC had a strong effect on post-cure enthalpy, decreasing its value when the ISO route was implemented. DMA analysis revealed that the RPUFs developed using the ISO route proved to have an improved damping factor, regardless of BNC concentration. These results emphasize the importance of using the ISO route to achieve foamed nanocomposites with improved specific mechanical properties."	en
dc.identifier.issn	1097-4628
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/3221
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1002/app.50520
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	CELULOSA BACTERIANA	es
dc.subject	BIOPOLIMEROS	es
dc.subject	ESPUMAS	es
dc.title	Nanostructured rigid polyurethane foams with improved specific thermo-mechanical properties using bacterial nanocellulose as a hard Segment	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Benavides, Sara. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Benavides, Sara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Armanasco, Franco. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Armanasco, Franco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Cerrutti, Patricia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Cerrutti, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.