A Feasible Synthetic Route for Linear PTHF-Hyperbranched Poly(phenyl sulfide) Block Copolymers

✍ Scribed by Zhichen Zhu; Caiyuan Pan

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 266 KB
• Volume: 208
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200700114

✦ Synopsis

Abstract

The linear‐hyperbranched block copolymers, in which the linear polytetrahydrofuran (PTHF) is linked to the apex of hyperbranched poly(phenylene sulfide) (HPPS‐SH), have been synthesized, and the synthesis includes condensation polymerization of 2,4‐dichlorobenzenethiol, subsequent transformation of the resultant HPPS‐SH to HPPS‐OH, and then the cationic ring‐opening polymerization of tetrahydrofuran (THF) using HPPS‐OH as a macrotransfer agent and BF~3~ · OEt~2~ as a catalyst. The resultant HPPSs have excellent thermal stability, the PTHF and HPPS chains were decomposed at 361 and 402 °C, respectively. HPPS can be dissolved in THF in the form of aggregates with R~h~ = 90 nm, which is larger than that (R~h~ = 55 nm) formed from the corresponding linear PTHF‐HPPS block copolymer.

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