In-chain functionalized poly(ε-caprolactone): A valuable precursor towards the synthesis of 3-miktoarm star containing hyperbranched polyethylene was written by Al-Sulami, Ahlam;Ladelta, Viko;Hadjichristidis, Nikos. And the article was included in Journal of Polymer Science (Hoboken, NJ, United States) in 2020.Quality Control of (2,2-Dimethyl-1,3-dioxolan-4-yl)methanol This article mentions the following:
Well-defined 3-miktoarm star copolymer 3μ-HBPE(PCL)2 (HBPE: hyperbranched polyethylene, PCL: poly[ε-caprolactone]) was synthesized by combining chain walking polymerization (CWP), ring-opening polymerization (ROP), and “click” chem. The synthetic methodol. includes the following steps: (a) synthesis of in-chain ethynyl-functionalized PCL, (PCL)2-C CH by ROP of ε-caprolactone (CL) with ethylene-functionalized solketal (3-[prop-2-yn-1-yloxy] propane-1,2-diol) as difunctional initiator and phosphazene superbase t-BuP2 as catalyst; (b) synthesis of azido-functionalized hyperbranched PE (HBPE-N3) by CWP of ethylene with α-diimine-Pd(II) catalyst, followed by quenching with excess 4-vinylbenzyl chloride and transformation of chloro to azide group with sodium azide; and (c) “clicking” HBPE-N3 and (PCL)2-C CH using copper(I)-catalyzed azide-alkyne cycloaddition 1H NMR spectroscopy, gel permeation chromatog., Fourier-transform IR spectroscopy, and differential scanning calorimetry were used to determine the mol. characteristics and thermal properties of the polymers. Self-assembly behavior of 3μ-HBPE (PCL)2 in petroleum ether, a selective solvent for HBPE, was investigated by dynamic light scattering, at. force microscopy, and transmission electron microscopy. The in-chain alkyne-functionalized poly(ε-caprolactone) is a valuable precursor for PCL-based complex macromol. architectures. In the experiment, the researchers used many compounds, for example, (2,2-Dimethyl-1,3-dioxolan-4-yl)methanol (cas: 100-79-8Quality Control of (2,2-Dimethyl-1,3-dioxolan-4-yl)methanol).
(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol (cas: 100-79-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Quality Control of (2,2-Dimethyl-1,3-dioxolan-4-yl)methanol
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem