Logo image
Back
Characterization of epoxies cured with bimodal blends of polyetheramines
Journal article   Peer reviewed

Characterization of epoxies cured with bimodal blends of polyetheramines

Ian M. McAninch, Giuseppe R. Palmese, Joseph L. Lenhart and John J. La Scala
Journal of applied polymer science, v 130(3), pp 1621-1631
05 Nov 2013
DOI: https://doi.org/10.1002/app.39322

Abstract

Physical Sciences Polymer Science Science & Technology
DGEBA was cured with bimodal blends of polyetheramines as well as with single molecular weight amines while maintaining stoichiometry. Glass transition temperatures (T(g)s) and moduli were measured using dynamic mechanical analysis (DMA). Fracture properties were measured using the compact tension geometry and testing was performed at both ambient and non-ambient temperatures, investigating toughness changes as a function of temperature. For constant amine average molecular weights, the addition of high molecular weight amines caused increased glassy moduli at a constant T - T-g and decreased densities while broadening the glass transition without changing the fracture toughness. The fracture behavior, specifically the slip-stick to brittle transition, was affected by the broadened transitions. T-g, breadth of T-g, and total damping were found to be proportional to the volume fraction of amine in the system. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1621-1631, 2013

Metrics

14 Record Views
31 citations in Web of Science
32 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
Web of Science research areas
Polymer Science
Logo image