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

"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...

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Autores principales: Chiacchiarelli, Leonel Matías, Cerrutti, Patricia, Flores-Johnson, Emmanuel A.
Formato: Artículos de Publicaciones Periódicas acceptedVersion
Lenguaje:Inglés
Publicado: info
Materias:
BIOPOLIMEROS
ESPUMAS
CELULOSA BACTERIANA
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/1896
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Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-1896
record_format dspace
spelling I32-R138-123456789-18962022-12-07T13:06:54Z 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. BIOPOLIMEROS ESPUMAS CELULOSA BACTERIANA "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." info:eu-repo/date/embargoEnd/2020-11-11 2020-03-04T14:40:46Z 2020-03-04T14:40:46Z 2019-05 Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedVersion 0021-8995 http://ri.itba.edu.ar/handle/123456789/1896 en info:eu-repo/semantics/altIdentifier/doi/10.1002/app.48701 info:eu-repo/grantAgreement/ANPCyT/PICT/2015‐N0475/AR. Ciudad Autónoma de Buenos Aires info:eu-repo/grantAgreement/CONACYT/Catédras/1241/MX.Yucatán info:eu-repo/semantics/embargoedAccess application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic BIOPOLIMEROS
ESPUMAS
CELULOSA BACTERIANA
spellingShingle BIOPOLIMEROS
ESPUMAS
CELULOSA BACTERIANA
Chiacchiarelli, Leonel Matías
Cerrutti, Patricia
Flores-Johnson, Emmanuel A.
Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
topic_facet BIOPOLIMEROS
ESPUMAS
CELULOSA BACTERIANA
description "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."
format Artículos de Publicaciones Periódicas
acceptedVersion
author Chiacchiarelli, Leonel Matías
Cerrutti, Patricia
Flores-Johnson, Emmanuel A.
author_facet Chiacchiarelli, Leonel Matías
Cerrutti, Patricia
Flores-Johnson, Emmanuel A.
author_sort Chiacchiarelli, Leonel Matías
title Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
title_short Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
title_full Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
title_fullStr Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
title_full_unstemmed Compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
title_sort compressive behavior of rigid polyurethane foams nanostructured with bacterial nanocellulose at low and intermediate strain rates
publishDate info
url http://ri.itba.edu.ar/handle/123456789/1896
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AT cerruttipatricia compressivebehaviorofrigidpolyurethanefoamsnanostructuredwithbacterialnanocelluloseatlowandintermediatestrainrates
AT floresjohnsonemmanuela compressivebehaviorofrigidpolyurethanefoamsnanostructuredwithbacterialnanocelluloseatlowandintermediatestrainrates
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