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Authors Parameswaranpillai, J. ; Sidhardhan, S. K. ; Jose, S. ; Siengchin, S. ; Pionteck, J. ; Magueresse, A. ; Grohens, Y. ; Hameed, N.
Title Reaction-induced phase separation and resulting thermomechanical and surface properties of epoxy resin/poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) blends cured with 4,4-diaminodiphenylsulfone
Date 20.01.2017
Number 52486
Abstract We investigated the phase separation, cure kinetics and thermomechanical properties of diglycidyl ether of bisphenol-A/4,4´-diaminodiphenylsulfone/poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (PEO–PPO–PEO) triblock copolymer (TBCP) blends. Fourier transform infrared spectroscopy, differential scanning calorimetry, and atomic force microscopy revealed that the blends exhibited heterogeneous phase morphology in which the TBCP formed dispersed domains in epoxy matrix, due to reaction induced phase separation. A fraction of phase-separated PEO phase underwent partial crystallization whereas another fraction formed interphases between the dispersed domains and epoxy matrix. Moreover, the dispersed PEO chains improved the compatibility and interfacial adhesion between the matrix and domains and, consequently, significantly improved the mechanical properties of epoxy resin. Furthermore, the thermal degradation studies and contact angle measurements disclosed that the dispersed domains were well protected by the epoxy matrix. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44406.
Publisher Journal of Applied Polymer Science
Wikidata
Citation Journal of Applied Polymer Science 134 (2017) Art.No. 44406
DOI https://doi.org/10.1002/app.44406
Tags glass transition mechanical properties microscopy structure-property relationships thermal properties induced microphase separation mechanical-properties triblock copolymer block-copolymers thermoset blends resin systems morphology nanostructures miscibil

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