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

dc.contributor.authorHerrán, Rodrigo
dc.contributor.authorAmalvy, Javier Ignacio
dc.contributor.authorChiacchiarelli, Leonel Matías
dc.dateinfo:eu-repo/date/embargoEnd/2020-04-23
dc.date.accessioned2020-01-21T15:11:24Z
dc.date.available2020-01-21T15:11:24Z
dc.date.issued2019-10
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.issn0021-8995
dc.identifier.urihttp://ri.itba.edu.ar/handle/123456789/1862
dc.language.isoenen
dc.relationinfo:eu-repo/grantAgreement/ANPCyT/PICT/2015-N0475/AR. Ciudad Autónoma de Buenos Aires
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1002/app.47959
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectBIOPOLIMEROSes
dc.subjectPOLIURETANOSes
dc.subjectESPUMASes
dc.subjectACEITE DE SOJAes
dc.subjectACIDO LACTICOes
dc.titleHighly functional lactic acid ring-opened soybean polyols applied to rigid polyurethane foamsen
dc.typeArtículos de Publicaciones Periódicases
dc.typeinfo:eu-repo/semantics/acceptedVersion
dspace.entity.typeArtículo de Publicación Periódica
itba.description.filiationFil: Herrán, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiationFil: Herrán, Rodrigo. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina.
itba.description.filiationFil: Amalvy, Javier Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiationFil: Amalvy, Javier Ignacio. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina.
itba.description.filiationFil: Chiacchiarelli, Leonel Matías. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiationFil: Chiacchiarelli, Leonel Matías. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina.
itba.description.filiationFil: Chiacchiarelli, Leonel Matías. Instituto Tecnológico de Buenos Aires; Argentina.
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