| 초록 |
A series of renewable ABA triblock thermoplastic elastomers having rubbery phase (A) and hard phase (B) were prepared. First, we describe (a) a method for preparing Br-PM-Br macroinitiators (Mn = 100 kg mol-1) using menthide and acryl bromide via ROP and sequential esterification, (b) the use of the macroinitiator to prepare PMBL-PM-PMBL triblock copolymers (6-20 wt % PMBL) using α-methylene-γ-butyrolactone via ATRP, and (c) molecular and physical characterization of these triblock were determined. Even at 100 ℃, the tensile behavior was respectable σat ε = 1300% =~1.0 MPa), due to high Tg PMBL of 170-190 ℃. Second, we report (a) a method for preparing CTA-difunctionalized PHL using plane oil-based δ-hexalactone (HL) and chain transfer agent (CTA) via ROP and sequential esterification. The macro-CTA will be used for synthesis of hard phase RAFT-polymerized by lignin-based acrylated guaiacol. Further study for molecular, mechanical, and thermal properties is necessary. |
