The acetonitrile extracts of can-coating materials have been analyzed by using high-pressure liquid chromatography/electrospray ionization-mass spectrometry (HPLC/ESI-MS). On the basis of detected ions [M + H], [M + NH], [M + Na] and product ions, the ethoxylated butoxyethanol-bisphenol A diglycidyl ether adducts were identified in two of the analyzed extracts. Although the oxyethylene unit-containing compounds are widely used for the production of different kinds of materials, the ethoxylated species have not been earlier detected in epoxy resin can-coatings.
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http://dx.doi.org/10.3390/ma14133682 | DOI Listing |
J Vis Exp
December 2024
School of Engineering and Materials Science, Queen Mary University of London.
Environ Sci Technol
January 2025
Lyles School of Civil Engineering, Division of Environmental and Ecological Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana 47907, United States.
Cured-in-place-pipe (CIPP) technology has begun to be adopted for drinking water pipe repairs, and limited information exists about its drinking water quality impacts. CIPP involves the manufacture of a new plastic pipe inside a buried damaged pipe. In this study, the chemical composition of the raw materials and CIPP water quality impacts were examined.
View Article and Find Full Text PDFACS Omega
December 2024
Department of Materials Science and Engineering, Norwegian University of Science and Technology, NTNU, Sem Sælands vei 12, 7034 Trondheim, Norway.
In thermosetting epoxies, thermomechanical properties can be enhanced by conscious selection of curing agents. Full cross-linking leads to a maximum in the glass- transition temperature. However, the relation between the glass transition temperature and the epoxy matrix depends on several factors beyond the cross-linking degree, such as the molecular weight of the polymers, network organization, amount of branching, and the presence of hydrogen bonds.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, China; Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, Shandong 250014, China. Electronic address:
Preeclampsia (PE) is a pregnancy-related disease that poses a significant threat to the health of both the mother and the fetus. Previous studies have primarily focused on the role of the placenta in PE pathogenesis; however, normal decidualization is crucial for the subsequent development of the placenta and pregnancy. Bisphenol A (BPA) is an environmental endocrine disruptor commonly used in the synthesis of polycarbonate and epoxy resins.
View Article and Find Full Text PDFRadiat Environ Biophys
December 2024
Faculty of Radiological Technology, Rangsit University, Pathumthani, 12000, Thailand.
This study explores the development and efficacy of eggshell-derived particle composites with epoxy resin for enhanced radiation shielding applications. Eggshells, primarily composed of calcium carbonate, were processed into particles of three sizes: small, medium, and large. These particles were incorporated into epoxy resin at a 50% weight ratio and characterized using a Laser Particle Size Distribution Analyzer.
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