Perfluoropyridine as a Scaffold for Semifluorinated Thiol-ene Networks with Readily Tunable Thermal Properties was written by Moore, Levi M. J.;Greeson, Kevin T.;Stewart, Kevin A.;Kure, Daniel A.;Corley, Cynthia A.;Jennings, Abby R.;Iacono, Scott T.;Ghiassi, Kamran B.. And the article was included in Macromolecular Chemistry and Physics in 2020.Safety of 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:
Two new trifunctional alkene monomers based on the highly modular perfluoropyridine scaffold are synthesized with an aliphatic and an aromatic moiety, 4-penten-1-ol and eugenol, resp. The monomers are the basis for thiol-ene thermoset materials, formulated against a difunctional or trifunctional thiol. Systems based on these novel monomers have a wide range of thermal properties, with glass transition temperatures (Tgs) spanning from -42 to 21掳C. Mixed systems obey the Fox equation, and Tgs of the mixtures can be tuned to specific values in that range. Thermal degradation temperatures follow a similar trend, with decomposition temperatures ranging from 274 to 348掳C in nitrogen with varying compositions having tailorability therein. This new class of semifluorinated thermoset materials with tunable thermal properties has several potential applications within the aerospace industry, such as sealants and coatings, where stability and survivability at high temperatures in harsh environmental conditions are imperative. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Safety of 2,3,4,5,6-Perfluoropyridine).
2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Safety of 2,3,4,5,6-Perfluoropyridine