Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates

Chiacchiarelli, Leonel Matías; Cerrutti, Patricia; Flores-Johnson, Emmanuel A.

Artículo de Publicación Periódica:
Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates

dc.contributor.author	Chiacchiarelli, Leonel Matías
dc.contributor.author	Cerrutti, Patricia
dc.contributor.author	Flores-Johnson, Emmanuel A.
dc.date	info:eu-repo/date/embargoEnd/2020-11-11
dc.date.accessioned	2020-03-04T14:40:46Z
dc.date.available	2020-03-04T14:40:46Z
dc.date.issued	2019-05
dc.description.abstract	"Nanocellulose reinforced foams are lightweight with improved mechanical properties; however, the strain-rate effect on their mechanical response is not yet fully understood. In this work, rigid polyurethane foams (PUFs) nanostructured with bacterial nanocellulose at 0.2 wt % (BNCF) and without it (PUF) are synthesized and subjected to compression tests at different strain rates. The BNC acts as a nucleation agent, reducing the cell size but maintaining a similar apparent density of 40.4 3.3 kg m −3 Both BNCF and PUF exhibit strain-rate effect on yield stress and densification strain. The BNCF exhibits localized progressive crushing and reduced friability, causing a remarkable recovery in the transverse direction. Numerical simulations show that functionally graded foams subjected to impact could be designed using different layers of PUF and BNCF to vary energy absorption and acceleration rate. The results presented herein warrant further research of the mechanical properties of nanostructured foams for impact applications."	en
dc.identifier.issn	0021-8995
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1896
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1002/app.48701
dc.relation	info:eu-repo/grantAgreement/ANPCyT/PICT/2015‐N0475/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/CONACYT/Catédras/1241/MX.Yucatán
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	BIOPOLIMEROS	es
dc.subject	ESPUMAS	es
dc.subject	CELULOSA BACTERIANA	es
dc.title	Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates	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. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Cerrutti, Patricia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Flores-Johnson, Emmanuel A. Centro de Investigación Científica de Yucatán; México.