WebOct 9, 2024 · Eight-arm star-like poly(ethylene oxide)s were successfully synthesized via phosphazene-catalyzed ring-opening polymerization of ethylene oxide using sucrose as an octahydroxy initiator. The products were subjected to MTT assay using human cancer cell lines (MDA-MB-231 and A2780). WebMar 13, 2015 · Phosphazenes: efficient organocatalysts for the catalytic hydrosilylation of carbon dioxide † Marc-André Courtemanche,a Marc-André Légaré,a Étienne Rochette a and Frédéric-Georges Fontaine *a Author affiliations Abstract Phosphazene superbases are efficient organocatalysts for the metal-free catalytic hydrosilylation of carbon dioxide.
Ring-Opening Polymerization of Siloxanes Using Phosphazene …
WebJan 16, 2024 · Organic cyclic trimeric phosphazene base (CTPB) with triethyl borane (TEB) as a co-catalyst (even 5 mol% relative to CTPB) is highly active toward ring-opening … WebJun 5, 2010 · PO is directly charged into a homogeneous mixture of glycerin and phosphazene catalysts, PZN or PZO at 80–140°C, and is polymerized . The New PPGs … tsonga footwear
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WebMar 3, 2024 · Phosphazene Functionalized Silsesquioxane-Based Porous Polymer as Thermally Stable and Reusable Catalyst for Bulk Ring-Opening Polymerization of ε-Caprolactone ... Piskun YA, Ksendzov EA, Resko AV, Soldatov MA, Timashev P, Liu H, Vasilenko IV, Kostjuk SV. Phosphazene Functionalized Silsesquioxane-Based Porous … WebMar 1, 2024 · Using phosphazene-urea PU-2 as catalyst, isotactic polylactides were obtained with high Pm value of 0.79 and fast polymerization under mild conditions. Compared with other phosphazene bases (BEMP, t Bu-P 2 or CTPB), PU-2 has the highest stereoselectivity at room temperature and much higher catalytic activity than t Bu-P 1 or BEMP. WebThe catalytic activity of studied phosphazene compounds decreased in the row: hexachlorocyclotriphosphazene (HCP) > tetra m-toluidine substituted phosphazene PN … tsonga historical writings