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Journal ArticleDOI

Characterization of epoxy thermosetting systems by differential scanning calorimetry

Jocelyne Galy, +2 more
- 01 Nov 1986 - 
- Vol. 26, Iss: 21, pp 1514-1523
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TLDR
In this paper, the effect of variations in the amine-to-epoxy ratio r on the glass transition temperature Tg is examined and a method is developed to determine the activation energy.
Abstract: 
Differential Scanning Calorimetry (DSC) is used to study the curing behavior of epoxy systems. For non-catalyzed diamine-epoxy systems, the reaction enthalpy ΔH and the glass transition temperature Tg are evaluated and related to the structure of the hardener. A method is developed to determine the activation energy. The effect of variations in the amine-to-epoxy ratio r on Tg is also examined. A maximum value is observed for r = 1. Then, the influence of benzyldimethylamine as catalyst in an anhydride/DGEBA system and in three diamine/DGEBA systems is reported. In the cases of DDS and DDA curing agent the maximum value of Tg is shifted, to r = 0, 6. The results are explained by different reaction mechanisms.

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Journal ArticleDOI

Cure kinetics, morphology and miscibility of modified DGEBA-based epoxy resin – Effects of a liquid rubber inclusion

Raju Thomas, +7 more
- 08 Mar 2007 - 
TL;DR: In this article, the authors investigated the effects of inclusion of the liquid rubber phase in the transition phenomena that occur during the curing reaction, and the results obtained from the differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), and scanning electron microscopy (SEM).
Journal ArticleDOI

Preparation and properties of bio-based epoxy networks derived from isosorbide diglycidyl ether

Marie Chrysanthos, +5 more
- 20 Jul 2011 - 
TL;DR: In this paper, two bio-based epoxy prepolymers were synthesized from isosorbide, a carbohydrate-based C6 building block, using two different synthetic routes.
Journal ArticleDOI

Near- and mid-infrared spectroscopy studies of an epoxy reactive system

N. Poisson, +2 more
- 01 Oct 1996 - 
TL;DR: In this article, near and mid-infrared spectroscopy techniques were used to study the cure reaction of accelerated diphenyldimethylurea (Diuron) epoxy formulation based on diglycidyl ether of bisphenol A (DGEBA) prepolymer curing with dicyandiamide (DDA) hardener.
Journal ArticleDOI

Polymer networks derived from curing of epoxidised linseed oil: influence of different catalysts and anhydride hardeners

N. Boquillon, +1 more
- 01 Nov 2000 - 
TL;DR: In this article, the effects of steric factors and of the rigidity of the diester segment formed due to the extent of conversion of anhydride groups and on the network's properties were observed.
Journal ArticleDOI

Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins

Sofia Benyahya, +10 more
- 01 Feb 2014 - 
TL;DR: In this paper, the green tea extract was functionalized by the reaction with epichlorohydrin in the presence of phase transfer catalyst, and the resulting network was compared to catechin-IPD and diglycidyl ether of bisphenol A.
References
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Journal ArticleDOI

Reaction Kinetics in Differential Thermal Analysis

H. E. Kissinger
- 01 Nov 1957 - 
Journal ArticleDOI

Cross-Linking–Effect on Physical Properties of Polymers

Lawrence E Nielsen
TL;DR: In this article, a review of the properties of cross-linked polymers is presented from the practical viewpoint of an experimental scientist who is using cross-link polymers but who is not an expert on the theory of crosslinking.
Journal ArticleDOI

Influence of molecular weight and degree of crosslinking on the specific volume and glass temperature of polymers

T. G. Fox, +1 more
- 01 Feb 1955 - 
TL;DR: In this article, the specific volume-temperature-molecular weight (v-T-M) relationship for a homologous series of polymers was derived from the v-T curves for the monomer and the polymer of infinite molecular weight.
Journal ArticleDOI

Calorimetric investigation of polymerization reactions. III. Curing reaction of epoxides with amines

Kazuyuki Horie, +4 more
- 01 Jun 1970 - 
TL;DR: In this article, the curing reactions of epoxy resin with aliphatic diamines and the reaction of phenyl glycidyl ether with butylamine were investigated with a differential scanning calorimeter (DSC) operated isothermally.
Journal ArticleDOI

Curing reaction of epoxy resins with diamines

Carmen C. Riccardi, +2 more
- 01 Aug 1984 - 
TL;DR: In this paper, the curing reaction of a commercial bisphenol A diglycidyl ether (BADGE) with ethylenediamine (EDA) was studied by differential scanning calorimetry.