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dc.contributor.author
Campos, Gabriela Clarisa  
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Sáiz, Luciana María  
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Pettarin, Valeria  
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Zucchi, Ileana Alicia  
dc.contributor.author
Galante, Maria Jose  
dc.date.available
2024-12-06T11:45:30Z  
dc.date.issued
2023-12  
dc.identifier.citation
Campos, Gabriela Clarisa; Sáiz, Luciana María; Pettarin, Valeria; Zucchi, Ileana Alicia; Galante, Maria Jose; Self-healing recyclable polymers based on azobenzenes with thermoset like behaviour; Elsevier; Polymer; 290; 12-2023; 1-8  
dc.identifier.issn
0032-3861  
dc.identifier.uri
http://hdl.handle.net/11336/249670  
dc.description.abstract
Self-healing materials are considered intelligent materials capable of recovering their original shapes fromdamaged or distorted forms after exposure to specific stimuli, such as chemicals, heat, moisture, or light. Theutilization of thermoreversible crosslinks in polymer networks has garnered increasing interest as a method tocreate such materials. In these polymers, damage can be repaired simply by heating them above a gel-liquidtransition temperature. Upon cooling, the material regains its previous cross-linked properties. However,finding alternative external stimuli other than heat presents an intriguing challenge. Among the various possibilities, light is the preferred choice due to its potential for remote and spatially-controlled activation. Additionally, the process can be easily paused and resumed by turning the excitation light on and off.Furthermore, the photo-switching of the glass transition temperature (Tg) in azobenzene-containing polymersinduces reversible transitions from a solid to a liquid state. These reversible trans-to-cis transitions are triggeredby UV and visible light irradiation. This phenomenon offers a novel approach to designing healable polymers andallows for precise control over the mechanical properties of polymers with spatio-temporal resolution.The main objective of this study is to investigate the feasibility of using light as a self-healing trigger in arecyclable polymer based on physically cross-linked epoxy/amine formulations. To achieve this goal, the matrixwas modified with 4-phenylazophenol (PAP), which forms homogeneous blends with the polymer throughhydrogen bond interactions. Films were prepared and characterized using various experimental techniques.Polymerization kinetics of samples with and without PAP was determined using FTIR, which was also employedfor characterizing the final materials. Tg of the resulting products was measured using DSC, revealing a decreasein its value for PAP-modified samples. The transition from a solid to a liquid state during UV light irradiation wasobserved using rheometric analysis. The reversible photoisomerization behaviour of epoxy/amine/PAP wasinvestigated using UV–visible spectroscopy in films prepared by spin-coating THF solutions.The ability of the material to self-heal at room temperature using light as a remote source was confirmedthrough TOM (Transmission Optical Microscopy) observations and quantified by profilometric measurements. Inaddition, surface mechanical properties were evaluated in order to determine the effect of the incorporation ofthe PAP, and the ability of the repaired material to recover its properties. Promising findings indicate that thisrecyclable polymer holds significant potential for multiple applications where its self-healing ability will be ofgreat importance.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Azobenzene chromophore  
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Photo-responsive  
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Cis-trans isomerization  
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Self-healing  
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Ingeniería de los Materiales  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
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Nano-materiales  
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Nanotecnología  
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INGENIERÍAS Y TECNOLOGÍAS  
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Otras Ingenierías y Tecnologías  
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Otras Ingenierías y Tecnologías  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Self-healing recyclable polymers based on azobenzenes with thermoset like behaviour  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-11-26T14:14:58Z  
dc.journal.volume
290  
dc.journal.pagination
1-8  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Campos, Gabriela Clarisa. 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: Sáiz, Luciana María. 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: Pettarin, Valeria. 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: Zucchi, Ileana Alicia. 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: Galante, Maria Jose. 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
Polymer  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S003238612300890X?via%3Dihub  
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.polymer.2023.126560