Highly functional lactic acid ring-opened soybean polyols applied to rigid polyurethane foams

Herrán, Rodrigo; Amalvy, Javier Ignacio; Chiacchiarelli, Leonel Matías

Artículo de Publicación Periódica:
Highly functional lactic acid ring-opened soybean polyols applied to rigid polyurethane foams

dc.contributor.author	Herrán, Rodrigo
dc.contributor.author	Amalvy, Javier Ignacio
dc.contributor.author	Chiacchiarelli, Leonel Matías
dc.date	info:eu-repo/date/embargoEnd/2020-04-23
dc.date.accessioned	2020-01-21T15:11:24Z
dc.date.available	2020-01-21T15:11:24Z
dc.date.issued	2019-10
dc.description.abstract	"We synthesized polyols with high hydroxyl functionalities (FOHs), between 9.0 and 12.6, and characterized them with differential scanning calorimetry, thermogravimetric analysis, and size exclusion chromatography after we parametrically studied the ring-opening reaction of epoxidized soybean oil with lactic acid (LA) as a function of the reaction temperature and lactic acid equivalent frac-tion (fLA). An increase of only 20C in the reaction temperature (from 80 to 100C) caused changes in the hydroxyl number (+17.8%), FOH (–25%), viscosity (–14.0%), and oligomeric content (–24.1%). fLA mostly affected the ring-opening yield, and only for fLA values above 0.4 was possible to achieve values higher than 80%. Rigid polyurethane foams (rPUFs) were synthesized and characterized with scanning electron microscopy, dynamic mechanical analysis (DMA), and compressive mechanical tests. rPUFs with a very high specific compres-sive strength (7.8 kPa kg–1 m3) were synthesized solely with biobased soybean oil. DMA revealed a compromised relationship between the specific compressive strength and its temperature dependence. To increase the first one, the most relevant method was to increase FOH. Instead, to increase the latter one, the OH number had to be maximized."	en
dc.identifier.issn	0021-8995
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1862
dc.language.iso	en	en
dc.relation	info:eu-repo/grantAgreement/ANPCyT/PICT/2015-N0475/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1002/app.47959
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	BIOPOLIMEROS	es
dc.subject	POLIURETANOS	es
dc.subject	ESPUMAS	es
dc.subject	ACEITE DE SOJA	es
dc.subject	ACIDO LACTICO	es
dc.title	Highly functional lactic acid ring-opened soybean polyols applied to rigid polyurethane foams	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: Herrán, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Herrán, Rodrigo. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina.
itba.description.filiation	Fil: Amalvy, Javier Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Amalvy, Javier Ignacio. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiation	Fil: Chiacchiarelli, Leonel Matías. Instituto Tecnológico de Buenos Aires; Argentina.