Investigation of the postcure reaction and surface energy of epoxy resins using time-of-flight secondary ion mass spectrometry and contact-angle measurements

Awaja, Firas, Gilbert, Michael, Fox, Bronwyn, Kelly, Georgina and Pigram, Paul J. 2009, Investigation of the postcure reaction and surface energy of epoxy resins using time-of-flight secondary ion mass spectrometry and contact-angle measurements, Journal of applied polymer science, vol. 113, no. 5, pp. 2755-2764.

Attached Files
Name Description MIMEType Size Downloads

Title Investigation of the postcure reaction and surface energy of epoxy resins using time-of-flight secondary ion mass spectrometry and contact-angle measurements
Author(s) Awaja, Firas
Gilbert, Michael
Fox, Bronwyn
Kelly, Georgina
Pigram, Paul J.
Journal name Journal of applied polymer science
Volume number 113
Issue number 5
Start page 2755
End page 2764
Total pages 10
Publisher John Wiley & Sons
Place of publication Hoboken, N. J.
Publication date 2009-09-05
ISSN 0021-8995
1097-4628
Keyword(s) adhesion
resins
surfaces
Summary Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to investigate correlations between the molecular changes and postcuring reaction on the surface of a diglycidyl ether of bisphenol A and diglycidylether of bisphenol F based epoxy resin cured with two different amine-based hardeners. The aim of this work was to present a proof of concept that ToF-SIMS has the ability to provide information regarding the reaction steps, path, and mechanism for organic reactions in general and for epoxy resin curing and postcuring reactions in particular. Contact-angle measurements were taken for the cured and postcured epoxy resins to correlate changes in the surface energy with the molecular structure of the surface. Principal components analysis (PCA) of the ToFSIMS positive spectra explained the variance in the molecular information, which was related to the resin curing and postcuring reactions with different hardeners and to the surface energy values. The first principal component captured information related to the chemical phenomena of the curing reaction path, branching, and network density based on changes in the relative ion density of the aliphatic hydrocarbon and the C7H7O+ positive ions. The second principal component captured information related to the difference in the surface energy, which was correlated to the difference in the relative intensity of the CxHyNz+ ions of the samples. PCA of the negative spectra provided insight into the extent of consumption of the hardener molecules in the curing and postcuring reactions of both systems based on the relative ion intensity of the nitrogen-containing negative ions and showed molecular correlations with the sample surface energy.
Language eng
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2009, Wiley Periodicals, Inc.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30028422

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 3 times in TR Web of Science
Scopus Citation Count Cited 3 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 426 Abstract Views, 5 File Downloads  -  Detailed Statistics
Created: Wed, 21 Apr 2010, 11:47:53 EST by Sandra Dunoon

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.