NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Effects of Crosslink Density on Surface and Interface Properties of Amine-Cured Epoxy

Published

Author(s)

Xiaohong Gu, Tinh Nguyen, Mark R. VanLandingham, D T. Raghavan

Abstract

The effect of network changes on the surface and interface properties of amine-cured epoxy has been investigated. Samples of different crosslinked epoxies are prepared by mixing stoichiometrically pure diglycidyl ether of bisphenol A (n=0.03) with different ratios of 1,3-bis(aminomethyl)cyclohexane (terafunctional amine) and cyclohexylmethylamine (difunctional amine). Both free films and films applied to a silicon substrate are used for the analysis. All samples are cured in CO2-free air. The crosslink density is measured by dynamic mechanical analysis (DMA). Both the film surface in contact with air and that in contact with the silicon substrate (the interface) of different crosslinked epoxies are analyzed using atomic force microscopy (AFM), nano-indentation, X-ray phoelectron spectroscopy (XPS), attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, and contact angle measurements. Results show a strong influence of crosslink density on the surface and interface properties of amine-cured epoxy. Substantial chemical and morphological differences between the surface and the interface are also observed for different network epoxies. The effect of crosslink density on surface and interface properties have strong implications on the wettablity, adhesion, and durability of amine-cured epoxies.
Proceedings Title
The 25th Annual Meeting of The Adhesion Society, Inc. and The Second World Congress on Adhesion and Related Phenomena (WCARP-II)
Conference Dates
February 10-14, 2002
Conference Title
Adhesion Society Meeting
Pub Type
Conferences

Keywords

AFM, building technology, coatings, crosslink density, durability, epoxy, interface/interphase, microstructure, surface
Buildings and Construction and Fire

Citation

Gu, X. , Nguyen, T. , VanLandingham, M. and Raghavan, D. (2002), Effects of Crosslink Density on Surface and Interface Properties of Amine-Cured Epoxy, The 25th Annual Meeting of The Adhesion Society, Inc. and The Second World Congress on Adhesion and Related Phenomena (WCARP-II) (Accessed October 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created February 1, 2002, Updated February 19, 2017
Was this page helpful?