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dc.contributor.author
Capiel, Guillermina  
dc.contributor.author
Hernández, Emanuel  
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Marcovich, Norma Esther  
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Mosiewicki, Mirna Alejandra  
dc.date.available
2021-10-14T12:53:04Z  
dc.date.issued
2020-06  
dc.identifier.citation
Capiel, Guillermina; Hernández, Emanuel; Marcovich, Norma Esther; Mosiewicki, Mirna Alejandra; Stress relaxation behavior of weldable crosslinked polymers based on methacrylated oleic and lauric acids; Pergamon-Elsevier Science Ltd; European Polymer Journal; 132; 6-2020; 1-9  
dc.identifier.issn
0014-3057  
dc.identifier.uri
http://hdl.handle.net/11336/143508  
dc.description.abstract
In this work, bio-based “malleable” crosslinked polymers that present suitable stress relaxation at relatively high temperatures and thermal welding (without the addition of any extrinsic catalyst) were evaluated. Two series of polymers were prepared: one coming from the polymerization of methacrylated oleic and lauric acids with styrene and the other obtained by replacing the styrene by commercial acrylated epoxidized soybean oil (AESO). All obtained polymers present β-hydroxyester groups that can lead to associative exchange reactions when they are submitted to thermal treatments. We demonstrate that even the polymers obtained by the simplest way, that is, the radical polymerization of methacrylated oleic or lauric acids (30 and 50 wt%) with styrene, experience interesting stress relaxation that manifests itself as a decrease of about 60–70% with respect to the initial modulus after approximately 2.5 h heat treatment at 190 °C. Furthermore, the system with 70 wt% methacrylated oleic acid and 30 wt% AESO can relax stresses up to 80% at 170 °C in the same period of time and exhibits almost complete stress relaxation at 200 °C in less than 20 min. The results are directly correlated with the chemical structure of the precursors, cross-linking density and amount of hydroxyl and esters groups in the cured polymers. Moreover, the obtained polymers are insoluble in most common solvents; exhibit composition dependent glass transition temperatures (Tgs) ranging from 10 to 75 °C and after welding still retain an acceptable mechanical behavior.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Pergamon-Elsevier Science Ltd  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BIO-BASED CROSSLINKED POLYMERS  
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STRESS RELAXATION  
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THERMAL WELDING  
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TRANSESTERIFICATION  
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Otras Ingeniería de los Materiales  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Stress relaxation behavior of weldable crosslinked polymers based on methacrylated oleic and lauric acids  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-08-27T20:26:23Z  
dc.journal.volume
132  
dc.journal.pagination
1-9  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Capiel, Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Hernández, Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Marcovich, Norma Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Mosiewicki, Mirna Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.journal.title
European Polymer Journal  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0014305720307461  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.eurpolymj.2020.109740