Fractography of poly(N-isopropylacrylamide) hydrogel networks crosslinked with mechanofluorophores using confocal laser scanning microscopy was written by Stratigaki, Maria;Baumann, Christoph;van Breemen, Lambert C. A.;Heuts, Johan P. A.;Sijbesma, Rint P.;Goestl, Robert. And the article was included in Polymer Chemistry in 2020.SDS of cas: 109-17-1 This article mentions the following:
Due to their soft and brittle nature, the mech. characterization of polymer hydrogels is a difficult task employing traditional testing equipment. This paper studies poly(N-iso-Pr acrylamide) (PNIPAAm) hydrogel networks with Diels-Alder adducts of π-extended anthracenes as mechanofluorophore crosslinkers. After swelling the networks with varying amounts of water and subjecting them to force, the subsequent fluorescence caused by covalent bond scission is visualized with confocal laser scanning microscopy (CLSM) and the intensities is related to the macroscopic fracture mechanics and the elastic moduli recorded with traditional uniaxial compression. The sensitivity of the mechanofluorophores allowed the anal. of low levels of mech. stress produced through a hand-induced needle-puncturing process and, thus, is an alternative to conventional force application methods. The detection and precise localization of covalent bond scission through CLSM helps elucidating the interrelationship between mol. structure and the macroscopic properties of chem. crosslinked polymeric hydrogels. The micro-scale mechanophore-assisted fractog. can establish a new paradigm for the mech. anal. of soft matter in fields covering traditional polymer and life sciences. In the experiment, the researchers used many compounds, for example, ((Oxybis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) bis(2-methylacrylate) (cas: 109-17-1SDS of cas: 109-17-1).
((Oxybis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) bis(2-methylacrylate) (cas: 109-17-1) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.SDS of cas: 109-17-1
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts