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dc.contributor.author
Hoppe, Cristina Elena
dc.contributor.author
Williams, Roberto Juan Jose
dc.contributor.other
Pascault, Jean Pierre
dc.contributor.other
Williams, Roberto Juan Jose
dc.date.available
2021-05-14T12:01:57Z
dc.date.issued
2009
dc.identifier.citation
Hoppe, Cristina Elena; Williams, Roberto Juan Jose; Self-assembly of epoxy-based polymers; Wiley-VCH; 2009; 109-120
dc.identifier.isbn
978-3-527-62871-1
dc.identifier.uri
http://hdl.handle.net/11336/132051
dc.description.abstract
Amphiphilic polymers have proved to be very versatile precursors for the synthesis of nanostructured systems by self-assembly. Dendrimers, polysoaps and block copolymers have successfully been used to obtain micelles, nanostructured films and mesophases with different levels of organization.1-3 Hydrophobic interactions are important in the formation of many kinds of organized polymer aggregates and gels. We can find good examples of the role of van der Waals interactions between long alkyl chains in the self assembly of metal nanoparticles 4 and metal thiolates.5 In this chapter we will show that proper combination of epoxy monomers with long alkyl chains co-monomers enables the synthesis of nanostructured systems through self-assembly of the alkyl chains. Both linear and crosslinked nanostructured polymers may be synthesized using appropriate chemistries. Linear polymers with hydrophobic pendant chains are easily obtained in bulk by the polycondensation reaction of diglycidylether of bisphenol A (DGEBA) with a long alkyl chain monoamine like dodecylamine. The resulting product exhibits typical properties of a thermoplastic epoxy (e.g., high solubility in a variety of solvents). However, when stored above its glass transition temperature it undergoes a nanostructuration process by the self-assembly of alkyl chains leading to a physical gel that is insoluble in most solvents. The sol-gel transition is reversible with temperature. Physical properties of the obtained networks and their dependence with the length of the alkyl chain are discussed. Crosslinked nanostructured networks may be obtained by a two-step procedure. In a first step the alkylamine is reacted with a monofunctional epoxy monomer bearing a multifunctional group capable of polymerizing in a second step. Glycidoxypropyl(trimethoxy)silane (GPMS) is a convenient epoxy monomer for these purposes. After end-capping the alkylamine with GPMS, self-assembly of the alkyl chains takes place in solution. The nanostructure generated is fixed by the hydrolytic polycondensation of methoxy groups (sol-gel reaction) that takes place simultaneously with solvent evaporation. The use of these systems as hosts of nanoparticles (NPs) coated by hydrophobic organic groups (e.g. dodecyl chains), is discussed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley-VCH
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Epoxy polymers
dc.subject
Self-assembly
dc.subject
Physical gels
dc.subject
Amphiphilic linear polymer
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Alkyl chain association
dc.subject
Amphiphilic epoxies
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Epoxy–alkyl amine reaction
dc.subject
Epoxy–fatty acid reaction
dc.subject
Physical gels
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Self‐assembly
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Self-assembly of epoxy-based polymers
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2021-01-18T19:57:32Z
dc.journal.pagination
109-120
dc.journal.pais
Alemania
dc.journal.ciudad
Weinheim
dc.description.fil
Fil: Hoppe, Cristina Elena. 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: Williams, Roberto Juan 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.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/book/10.1002/9783527628704
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/9783527628704.ch6
dc.conicet.paginas
387
dc.source.titulo
Epoxy Polymers: New materials and innovations
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