In-situ thermal aging of biobased and conventional rigid polyurethane foams nanostructured with bacterial nanocellulose

Diaz, Tomás Joaquin; Cerrutti, Patricia; Chiacchiarelli, Leonel Matías

artículo de publicación periódica.page.titleprefix
In-situ thermal aging of biobased and conventional rigid polyurethane foams nanostructured with bacterial nanocellulose

dc.contributor.author	Diaz, Tomás Joaquin
dc.contributor.author	Cerrutti, Patricia
dc.contributor.author	Chiacchiarelli, Leonel Matías
dc.date	info:eu-repo/date/embargoEnd/2022-11-02
dc.date.accessioned	2022-05-10T17:55:20Z
dc.date.available	2022-05-10T17:55:20Z
dc.date.issued	2021-11-02
dc.description.abstract	"The incorporation of nanofillers and the use of biobased polyols might have a deleterious effect on the aging performance of rigid polyurethane foams (RPUFs) applied in the insulation and marine industries. To study this, RPUFs obtained from petroleum based (RPUF) and castor oil (RPUFRIC) polyols were nanostructured with bacterial nanocellulose (BNC) up to 0.3 wt%. Water immersion experiments revealed that the normalized water absorption (NWA) at the steady state was not affected by lower BNC contents (<0.2 wt%). Higher BNC contents caused a complex effect on post-cure and foaming, generating cell size expansion as well as shrinkage. In-situ DMA aging analysis revealed that the specific storage modulus (E'sp) under flexural conditions of the RPUFRIC and RPUF decreased by a maximum amount of 7.27% and 6.19%, respectively. The effect of BNC on the E'sp was negligible, expect for the case of the RPUF, where higher BNC concentrations (>0.2 wt%) caused a decrease of up to 13.69%. The previous results reinforce the hypothesis that the incorporation of BNC in both conventional and biobased polyurethane systems do not cause significant changes on the aging performance of the resulting foams, provided that low BNC concentrations are employed."	en
dc.identifier.issn	1097-4628
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/3875
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1002/app.51824
dc.relation	info:eu-repo/grantAgreement/CONICET/PIP/N0425/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/ANPCyT/PICT/2015-N0475/AR. Ciudad Autónoma de Buenos Aires
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	BIOPOLIMEROS	es
dc.subject	ESPUMAS	es
dc.subject	CELULOSA BACTERIANA	es
dc.subject	POLIURETANOS	es
dc.title	In-situ thermal aging of biobased and conventional rigid polyurethane foams nanostructured with bacterial nanocellulose	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: Diaz, Tomás Joaquin. 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: Chiacchiarelli, Leonel Matías. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Instituto Tecnológico de Buenos Aires; Argentina.