Jump to main content
Jump to site search

Issue 1, 2016
Previous Article Next Article

Enhancement of the crosslink density, glass transition temperature, and strength of epoxy resin by using functionalized graphene oxide co-curing agents

Author affiliations

Abstract

We synthesized diamine-functionalized graphene oxide, DDS–GO and HMDA–GO, by introducing 4,4′-diaminodiphenyl sulfone (DDS) or hexamethylenediamine (HMDA) into the carboxylic acid groups on graphene oxide (GO) via amide bonds. The introduction of diamines was confirmed by analytical methods such as FT-IR, TG-DTA, XPS, AFM, and optical microscopy. Then, we applied DDS–GO and HMDA–GO as co-curing agents for epoxy (EP) nanocomposites that were prepared by mixing bisphenol-A type EP and DDS curing agent (ca. 21 wt%). Interestingly, when 1.0 wt% of DDS–GO was added to the EP/DDS mixture, the crosslink density (CD) increased from 0.028 to 0.069 mol cm−3. Due to the higher CD, both the glass transition temperature and tensile strength of the EP/DDS/DDS–GO nanocomposite effectively improved from 160.7 °C to 183.4 °C and from 87.4 MPa to 110.3 MPa, respectively.

Graphical abstract: Enhancement of the crosslink density, glass transition temperature, and strength of epoxy resin by using functionalized graphene oxide co-curing agents

Back to tab navigation

Supplementary files

Article information


Submitted
14 Sep 2015
Accepted
29 Oct 2015
First published
03 Nov 2015

Polym. Chem., 2016,7, 36-43
Article type
Paper
Author version available

Enhancement of the crosslink density, glass transition temperature, and strength of epoxy resin by using functionalized graphene oxide co-curing agents

J. W. Yu, J. Jung, Y. Choi, J. H. Choi, J. Yu, J. K. Lee, N. You and M. Goh, Polym. Chem., 2016, 7, 36
DOI: 10.1039/C5PY01483B

Social activity

Search articles by author

Spotlight

Advertisements