Synthesis of A2B2 miktoarm star copolymers from a new heterobifunctional initiator by combination of ROP and ATRP |
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Authors: | Mohammad Reza Nabid Mahvash Abedi Seyed Jamal Tabatabaei Rezaei |
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Affiliation: | (1) Department of Chemistry, Faculty of Science, Shahid Beheshti University, G. C., 1983963113 Tehran, Iran |
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Abstract: | Abstract A new heterobifunctional initiator, 2,3-bis(2-bromo-2-methylpropionyloxy) succinic acid, was synthesized and used in preparation of A2B2 miktoarm star copolymers, (polystyrene)2(poly(ε-caprolactone))2, by combination of atom transfer radical polymerization (ATRP) and Controlled ring-opening polymerization (ROP). The structures of products were confirmed by the 1H NMR, 13C NMR, FT–IR, elemental analysis, differential scanning calorimetry (DSC), and gel permeation chromatography (GPC). GPC traces show that the obtained polymers have a relatively narrow molecular weight distribution. The compositions of resulting miktoarm star copolymers were very close to theoretical. |
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