scholarly journals Dissolution behaviour of polyethersulfone in diglycidyl ether of bisphenol-A epoxy resins

2017 ◽  
Vol 213 ◽  
pp. 012038
Author(s):  
J L Zhou ◽  
C Cheng ◽  
H Zhang ◽  
Z Y Sun ◽  
S Zhu ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Epoxy Resins ◽  
Diglycidyl Ether ◽  
Dissolution Behaviour

scholarly journals Sustainable access to fully biobased epoxidized vegetable oil thermoset materials prepared by thermal or UV-cationic processes

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41954-41966 ◽  
Author(s):  
Samuel Malburet ◽  
Chiara Di Mauro ◽  
Camilla Noè ◽  
Alice Mija ◽  
Marco Sangermano ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Epoxy Resin ◽  
Vegetable Oil ◽  
Epoxy Resins ◽  
Diglycidyl Ether

Beyond the need to find a non-toxic alternative to DiGlycidyl Ether of Bisphenol-A (DGEBA), the serious subject of non-epichlorohydrin epoxy resins production remains a crucial challenge that must be solved for the next epoxy resin generations.

Effect of Epoxy Resin Addition on the Moisture Sensitivity of Macro Defect Free Polymer-Cement Composites

2011 ◽  
Vol 466 ◽  
pp. 65-72 ◽  
Author(s):  
Ozgur Ekincioglu ◽  
M. Hulusi Ozkul ◽  
Yoshihiko Ohama ◽  
Silvia Patachia ◽  
Georgeta Moise
Keyword(s):  
Bisphenol A ◽  
Epoxy Resins ◽  
Production Method ◽  
Diglycidyl Ether ◽  
Poly Vinyl Alcohol ◽  
Cement Pastes ◽  
Force Microscopy ◽  
Atomic Force ◽  
Roll Mill ◽  
Mdf Cements

Macro-defect-free (MDF) cements are cement-polymer composites and were developed by Birchall et al. three decades ago. The composites are produced by mixing small amounts of polymer and water with cement. However, they have a different production method than that of cement pastes, which was inspired by rubber production. Mixtures of cement, polymer and water are processed by using a two-roll mill. The composites are known with their high flexural strengths. Unfortunately, there are not any known commercial products using MDF cements because of their poor durability under moisture. In this study, MDF cements were prepared by using poly(vinyl alcohol--vinyl acetate) PVA, calcium aluminate cements and two different types of epoxy resins. Epoxy resins were a diglycidyl ether of bisphenol A and a mixture of a diglycidyl ethers of bisphenol A and F. Durability performance was compared with respect to biaxial flexural strengths, contact angle and atomic force microscopy (AFM) for the specimens stored in water.

Thermal and Dielectric Properties of Inorganic-Organic Nanocomposites Involving Epoxy Resin and Polyhedral Oligomeric Silsesquioxanes

2012 ◽  
Vol 476-478 ◽  
pp. 665-669 ◽  
Author(s):  
Li Yang ◽  
Miao Yin ◽  
Xiu Yun Li ◽  
Han Bing Ma
Keyword(s):  
Thermal Stability ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Bisphenol A ◽  
Epoxy Resin ◽  
Functional Groups ◽  
Epoxy Matrix ◽  
Epoxy Resins ◽  
Diglycidyl Ether ◽  
Polyhedral Oligomeric Silsesquioxanes

In this paper, a type of nanoporous polyhedral oligomeric silisesquioxanes (POSS) containing eight functional groups have been synthesized and mixed with diglycidyl ether of bisphenol A (DGEBA) to form epoxy resin networks with nanostructures. The cured octa(aminophenyl) silsesquioxane (1c-POSS) and DGEBA system inherently possesses higher thermal stability and higher char yield than the control epoxy resins. Furthermore, the dielectric constant of the 1c-POSS/DGEBA material (4.36) is substantially lower than that of the neat epoxy resins (4.64) as a consequence the presence of nanoporous POSS cubes in the epoxy matrix.

Graphene oxide as a catalyst for ring opening reactions in amine crosslinking of epoxy resins

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23858-23865 ◽  
Author(s):  
M. R. Acocella ◽  
C. Esposito Corcione ◽  
A. Giuri ◽  
M. Maggio ◽  
A. Maffezzoli ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Bisphenol A ◽  
Ring Opening ◽  
Epoxy Resins ◽  
Diglycidyl Ether ◽  
Epoxide Ring ◽  
Epoxide Ring Opening ◽  
Ring Opening Reactions

The influence of different graphite-based nanofillers on epoxide ring opening reactions, as induced by amines for diglycidyl ether of bisphenol A (DGEBA), is studied.

scholarly journals Investigation of bisphenol a diglycidyl ether, bisphenol f diglycidyl ether and their hydroxy and chlorohydroxy derivatives stability in water-based food simulants

2004 ◽  
Vol 22 (SI - Chem. Reactions in Foods V) ◽  
pp. S272-S275
Author(s):  
I. Poustková ◽  
J. Dobiáš ◽  
J. Poustka ◽  
M. Voldřich
Keyword(s):  
Acetic Acid ◽  
Bisphenol A ◽  
Epoxy Resins ◽  
High Performance ◽  
Diglycidyl Ether ◽  
Phase Gradient ◽  
Bisphenol F ◽  
Food Simulants ◽  
Bisphenol A Diglycidyl Ether ◽  
Food Simulant

Varnishes used as the inner coatings of food cans are often based on epoxy resins or vinylic organosols. The epoxy resins can be produced from bisphenol A (BPA) and bisphenol F (BPF) and they also contain bisphenol A diglycidyl ether (BADGE) of bisphenol F diglycidyl ether (BFDGE) as stabilising components. These compounds may break down during storage and also by influence of food simulants. The stability of BADGE and BFDGE was studied using reverse-phase gradient high performance liquid chromatography (RP-HPLC) with fluorescence detection (FLD). Four experiments were compared: (i) BPA solution at the concentration 3 μg/ml of each food simulant, (ii) BADGE solution at the concentration 3 μg/ml of each food simulant, (iii) BFDGE solution at the concentration 3 μg/ml of each food simulant and (iv) mixture of all bisphenols solution at the concentration 3 μg/ml of each food simulant. Distilled water, 10% ethanol, 95% ethanol and 3% acetic acid were used as food simulants. It was observed that BPA, BADGE and BFDGE were most stabile in 95% ethanol and least stabile in 3% acetic acid. Creation of hydroxy and chlorohydroxy derivatives was in each food simulant different so it cannot be predicted.

Fast Curing Epoxy and Episulfide Resins for Biomedical Applications

1987 ◽  
Vol 110 ◽  
Author(s):  
Ioannis N. Hadjinikolaou ◽  
James P. Bell ◽  
Larz Spangberg
Keyword(s):  
Bisphenol A ◽  
Physical Properties ◽  
Epoxy Resins ◽  
Biomedical Applications ◽  
Room Temperature ◽  
Diglycidyl Ether ◽  
Clinical Use ◽  
Curing Agent ◽  
Curing Agents

Epoxy resins have physical properties that make them suitable for dental and orthopaedic applications such as adhesives and cements. However, it has been observed that epoxy resins harden too slowly for clinical use when mixed with conventional curing agents, e.g. amines and polyamides. A new epoxy - diepisulfide - polyamide system has been developed which gels in 5 to 20 minutes at room temperature. The system consists of two parts: a polyamide curing agent, and a blend of the diepisulfide analog of diglycidyl ether of bisphenol A [DGEBA] dissolved in a mixture of epoxies of the DGEBA type.

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