Phosphazene Functionalized Silsesquioxane-Based Porous Polymer as Thermally Stable and Reusable Catalyst for Bulk Ring-Opening Polymerization of ε-Caprolactone.

Autor: Piskun YA; Research Institute for Physical Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220006 Minsk, Belarus.; Department of Chemistry, Belarusian State University, 14 Leningradskaya St., 220050 Minsk, Belarus., Ksendzov EA; Research Institute for Physical Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220006 Minsk, Belarus.; Department of Chemistry, Belarusian State University, 14 Leningradskaya St., 220050 Minsk, Belarus., Resko AV; Research Institute for Physical Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220006 Minsk, Belarus., Soldatov MA; Department of Science and Technology Projects, D. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Sq., 125047 Moscow, Russia., Timashev P; Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya St., 119991 Moscow, Russia.; World-Class Research Center 'Digital Biodesign and Personalized Healthcare', Sechenov University, 8-2 Trubetskaya St., 119991 Moscow, Russia.; Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia., Liu H; Key Laboratory of Special Functional Aggregated Materials, Shandong University, 27 Shanda Nanlu, Jinan 250100, China., Vasilenko IV; Research Institute for Physical Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220006 Minsk, Belarus.; Department of Chemistry, Belarusian State University, 14 Leningradskaya St., 220050 Minsk, Belarus., Kostjuk SV; Research Institute for Physical Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220006 Minsk, Belarus.; Department of Chemistry, Belarusian State University, 14 Leningradskaya St., 220050 Minsk, Belarus.; Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya St., 119991 Moscow, Russia.
Jazyk: angličtina
Zdroj: Polymers [Polymers (Basel)] 2023 Mar 03; Vol. 15 (5). Date of Electronic Publication: 2023 Mar 03.
DOI: 10.3390/polym15051291
Abstrakt: The bulk ring-opening polymerization (ROP) of ε-caprolactone using phosphazene-containing porous polymeric material (HPCP) has been studied at high reaction temperatures (130-150 °C). HPCP in conjunction with benzyl alcohol as an initiator induced the living ROP of ε-caprolactone, affording polyesters with a controlled molecular weight up to 6000 g mol -1 and moderate polydispersity (Ð~1.5) under optimized conditions ([BnOH]/[CL] = 50; HPCP: 0.63 mM; 150 °C). Poly(ε-caprolactone)s with higher molecular weight (up to M n = 14,000 g mol -1 , Ð~1.9) were obtained at a lower temperature, at 130 °C. Due to its high thermal and chemical stability, HPCP can be reused for at least three consecutive cycles without a significant decrease in the catalyst efficiency. The tentative mechanism of the HPCP-catalyzed ROP of ε-caprolactone, the key stage of which consists of the activation of the initiator through the basic sites of the catalyst, was proposed.
Databáze: MEDLINE
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