Synthesis and Characterization of Poly(Ԑ-caprolactone-b-Styrene) Block Copolymer by Ring-Opening Polymerization and Reversible Addition-Fragmentation Chain Transfer Polymerization

Year 2020, , 1759 - 1766, 01.09.2020

Bedrettin Savaş , Temel Öztürk

https://doi.org/10.21597/jist.686682

Cited By: 1

Abstract

The synthesis of the block copolymer was carried out using the RAFT polymerization technique and the ring-opening polymerization (ROP) technique using a novel two functional initiator (RAFT-ROP agent). For this purpose, RAFT-ROP agent was obtained using 5-bromo-2-hydroxybenzaldehyde and potassium salt of ethyl xanthogenate. RAFT-macro agent was synthesized by ROP of ɛ-caprolactone (CL) with RAFT-ROP agent. Then, poly(ɛ-caprolactone-b-styrene) block copolymer was synthesized using RAFT polymerization in the presence of RAFT-macro agent using styrene. The products were characterized using GPC, FT-IR and 1H-NMR analyses. Decomposition temperatures of the block copolymer were monitored by TGA method. Spectroscopic and thermal analyses revealed that the reactions were successfully carried out.

Keywords

novel two functional initiator, RAFT-macro agent, block copolymer, RAFT Polymerization, Ring-Opening Polymerization (ROP)

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