Structure, morphology and properties of epoxy networks with dangling chains cured by anhydride

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91875-91881 ◽  
Author(s):  
Longhan Ba ◽  
Qi Zou ◽  
Xiaocun Tan ◽  
Jiangpeng Song ◽  
Jue Cheng ◽  
...  
Keyword(s):  
Diglycidyl Ether ◽  
Epoxy Networks ◽  
Bisphenol F ◽  
Curing Reaction ◽  
Structure Morphology

A series of epoxy networks containing side aliphatic dangling chains were prepared by the curing reaction of bisphenol F diglycidyl ether (DGEBF), the monofunctional epoxy (including n-butyl, dodecyl, cetyl) and the anhydride.

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

Polymer ◽  
2011 ◽  
Vol 52 (16) ◽  
pp. 3611-3620 ◽  
Author(s):  
Marie Chrysanthos ◽  
Jocelyne Galy ◽  
Jean-Pierre Pascault
Keyword(s):  
Diglycidyl Ether ◽  
Epoxy Networks

scholarly journals Identification and Quantitation Studies of Migrants from BPA Alternative Food-Contact Metal Can Coatings

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2846
Author(s):  
Nan Zhang ◽  
Joseph B. Scarsella ◽  
Thomas G. Hartman
Keyword(s):  
Food Packaging ◽  
Safety Evaluation ◽  
Chemical Species ◽  
Internal Standard ◽  
Diglycidyl Ether ◽  
Gas Chromatography Mass Spectrometry ◽  
Contact Materials ◽  
Regulatory Guidance ◽  
Bisphenol F ◽  
Food Contact

Bisphenol A (BPA)-based epoxy resins have wide applications as food-contact materials such as metal can coatings. However, negative consumer perceptions toward BPA have driven the food packaging industry to develop other alternatives. In this study, four different metal cans and their lids manufactured with different BPA-replacement food-contact coatings are subjected to migration testing in order to identify migratory chemical species from the coatings. Migration tests are conducted using food simulants and conditions of use corresponding to the intended applications and regulatory guidance from the U.S. Food and Drug Administration. Extracts are analyzed by gas chromatography mass spectrometry (GC-MS) and high resolution GC-MS. The migratory compounds identified include short chain cyclic polyester migrants from polyester-based coatings and bisphenol-type migrants including tetramethyl bisphenol F (TMBPF), tetramethyl bisphenol F diglycidyl ether (TMBPF DGE), bisphenol F (BPF), bisphenol C (BPC), and other related monomers or oligomers. The concentration of the migrants is estimated using an internal standard, and validated trimethylsilyl (TMS) derivatization GC-MS methods are developed to specifically quantify TMBPF, BPF, BPC, and BPA in the coatings. The results will aid the safety evaluation of new food-contact material coating technology based on TMBPF chemistry and will provide an important reference for the industry in identifying and quantifying non-BPA coating-borne migrants.

Curing study and evaluation of epoxy resin with amine functional chloroaniline acetaldehyde condensate

2015 ◽  
Vol 44 (1) ◽  
pp. 19-25
Author(s):  
T. Maity ◽  
B.C. Samanta
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Epoxy Resin ◽  
Ph Value ◽  
Kinetic Studies ◽  
Diglycidyl Ether ◽  
Curing Agent ◽  
Scanning Calorimetry ◽  
Content Type ◽  
Curing Reaction

Purpose – The purpose of this paper was to check effectiveness of amine functional chloroaniline acetaldehyde condensate (AFCAC) as a new curing agent for diglycidyl ether of bisphenol A (DGEBA) resin. For this purpose, first AFCAC was synthesised, characterised and then curing reaction was carried out. Design/methodology/approach – Equimolecular mixture of AFCAC and DGEBA was subjected to curing reaction, and the reaction was followed by differential scanning calorimetry (DSC) analysis. The kinetic studies of this curing reaction were also carried out from those DSC exotherms. The mechanical properties, dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) of cured epoxy were also reported. Findings – DSC results reflected the effective first order curing reaction of AFCAC with epoxy resin. Mechanical properties reflected appreciable rigidity of AFCAC cured epoxy matrix and TGA showed that the cured epoxy networks were thermally stable up to around 297°C. Research limitations/implications – The curing agent AFCAC was synthesised by using chloroaniline and acetaldehyde in acid medium. There are some limitations for this procedure. The synthetic procedure is pH dependent. So reaction cannot be done at any pH value. The reaction must also be carried out at room temperature without any heating. To obtain low molecular weight curing agent, chloroaniline and acetaldehyde cannot be taken in equimolecular ratio because the equimolecular mixture of them produces high molecular weight condensate. This was shown in our previous publication. Some implications are also there. By changing amine and aldehyde other curing agents could be synthesised and the curing efficiency of those for epoxy resin could also be studied. Originality/value – Experimental results revealed the greater suitability of AFCAC as curing agent for DGEBA resin and novelty of AFCAC cured matrix in the field of protective coating, casting, adhesives, etc.

Kinetics of the curing reaction of a diglycidyl ether of bisphenol A with a modified polyamine

2005 ◽  
Vol 438 (1-2) ◽  
pp. 126-129 ◽  
Author(s):  
Alessia Catalani ◽  
Maria Grazia Bonicelli
Keyword(s):  
Bisphenol A ◽  
Diglycidyl Ether ◽  
Curing Reaction ◽  
Kinetics Of

Occurrence of bisphenol-F-diglycidyl ether (BFDGE) in fish canned in oil

2000 ◽  
Vol 17 (10) ◽  
pp. 881-887 ◽  
Author(s):  
Anne Theobald ◽  
Catherine Simoneau ◽  
Philippe Hannaert ◽  
Patrizia Roncari ◽  
Anna Roncari ◽  
...  
Keyword(s):  
Diglycidyl Ether ◽  
Bisphenol F
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