INVESTIGADORES
HOPPE Cristina Elena
congresos y reuniones científicas
Título:
NANOSTRUCTURED POLYMER NETWORKS BASED ON AMPHIPHILIC MONOMERS
Autor/es:
R. J. J. WILLIAMS; J. PUIG; C. E. HOPPE; I. A. ZUCCHI; A. LEDO-SUÁREZ; M.J. GALANTE
Lugar:
San José, Costa Rica
Reunión:
Simposio; XII Simposio Latinoamericano de Polímeros (SLAP 2010), X Congreso Iberoamericano de Polímeros (CIP 2010), I Congreso Centroamericano de Nanotecnociencia, I Congreso Nacional de Nanotecnociencia, I Congreso Nacional de Polímeros,; 2010
Institución organizadora:
UNA
Resumen:
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Linear amphiphilic epoxy
polymers synthesized by the polyaddition of diglycidyl ether of bisphenol A
(DGEBA) with alkylamines like octylamine (OA), dodecylamine (DA) and
hexadecylamine (HA), undergo a physical gelation process through tail-to-tail
association of alkyl chains (1,2). SAXS spectra showed that tail-to-tail
associations of alkyl chains were present since the beginning of polymerization
and remained in the final materials. Initially, these associations correspond
to micelles of the alkylamines dispersed in the solvent (DGEBA). In the course
of polymerization micelles are disaggregated as the individual alkylamine
chains become part of the linear amphiphilic polymer. However, tail-to-tail associations
among alkyl chains attached to the polymer backbone persisted in the final
materials.