Synthesis of functionalized polyisobutylene and its block copolymers with D,L-lactide
| Autor: | Pavel A. Nikishau, Evgenii A. Ksendzov, Dmitriy I. Shiman, Ludmila V. Gaponik, Sergei V. Kostjuk |
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| Jazyk: | Belarusian<br />English<br />Russian |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Журнал Белорусского государственного университета: Химия, Iss 2, Pp 40-50 (2019) |
| Druh dokumentu: | article |
| ISSN: | 2520-257X 2617-3980 |
| DOI: | 10.33581/2520-257X-2019-2-40-50 |
| Popis: | Method of reactive polyisobutylene modification by various alkoxybenzenes (anisole and 4-phenoxybutanol) was proposed to form functionalized polyisobutylenes. Polymerization of D,L-lactide was explored on the 4-phenoxybutanol/1,5,7-triazabicyclo[4.4.0]dec-5-ene system. It led to determination of optimal conditions for gaining of poly(isobutylene-b-D,L-lactide). Such copolymers (Mn = 14 300 g/mol and Mn = 36 600 g/mol, Mw / Mn ≤ 2.5) which were obtained by the polymerization of D,L-lactide on polyisobutylene macroinitiator shows microphase ordering. Formation of the block copolymers is confirmed by 1Н NMR spectroscopy, gel permeation chromatography, and scanning electron microscopy. |
| Databáze: | Directory of Open Access Journals |
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