Different parameters controlling the initial solubility of two thermoplastics in epoxy reactive solvents

Authors
Sautereau, H.; Pascault, J. P.; Bonnet, A.; Bonnaud, L.; Riccardi, Carmen Cristina
Publication Year
2002
Language
English
Format
article
Status
Published version
Description
The influence of different factors on the miscibility of diglycidyl ether of bisphenol A (DGEBA)/thermoplastic blends was studied. DGEBA/poly(ether imide) (PEI) blends exhibited upper critical solution temperature behavior. The addition of a trifunctional epoxy [triglycidyl para-amino phenol (TGpAP)] increased the miscibility window. The addition of diamines as hardeners could also increase [4,4′-methylene-bis(3-chloro-2,6-diethylaniline) (MCDEA)] or decrease (4,4′-diaminodiphenylsulfone) the miscibility window. DGEBA/poly(ether sulfone) (PES) blends showed lower critical solution temperature behavior. The addition of TGpAP had an effect similar to that for PEI blends, but the presence of MCDEA as a hardener decreased the miscibility of epoxy/PES blends. The modeling of the cloud-point curves was performed with the Flory-Huggins equation (Flory, P. J. Principles of Polymer Chemistry; Cornell University Press: Ithaca, NY, 1953; p 672) according to the procedure developed by K. Kamide, S. Matsuada, and H. Shirataki (Eur Polym J 1990, 26, 379), with the interaction parameter used as the fitting parameter. A phenomenological model that takes into account the molar mass of DGEBA and the amount of TGpAP is proposed and is found to predict the cloud-point temperature of any TGpAP/DGEBA/PEI blend.
Fil: Sautereau, H.. Centre National de la Recherche Scientifique; Francia
Fil: Pascault, J. P.. Centre National de la Recherche Scientifique; Francia
Fil: Bonnet, A.. Centre National de la Recherche Scientifique; Francia
Fil: Bonnaud, L.. Centre National de la Recherche Scientifique; Francia
Fil: Riccardi, Carmen Cristina. 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
Subject
FLORY-HUGGINS EQUATION
PHASE DIAGRAMS
PHASE SEPARATION
POLY(ETHER IMIDES)
POLY(ETHER SULFONES)
THERMOPLASTIC-MODIFIED EPOXIES
Otras Ingeniería Química
Ingeniería Química
INGENIERÍAS Y TECNOLOGÍAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/36893