New Strategy Targeting Well-Defined Polymethylene-block-Polystyrene Copolymers: The Combination of Living Polymerization of Ylides and Atom Transfer Radical Polymerization

✍ Scribed by Jian-Zhuang Chen; Kun Cui; Shu-Yuan Zhang; Peng Xie; Qiao-Ling Zhao; Jin Huang; Li-Ping Shi; Guang-Yu Li; Zhi Ma

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 342 KB
• Volume: 30
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200800683

✦ Synopsis

Abstract

Well‐defined polymethylene‐block‐polystyrene (PM‐b‐PS) diblock copolymers were synthesized via a combination of living polymerization of ylides and atom transfer radical polymerization (ATRP) of styrene. A series of hydroxyl‐terminated polymethylenes (PM‐OHs) with different molecular weight and narrow molecular weight distribution were prepared using living polymerization of ylides following efficient oxidation in a quantitive functionality. Then, the macroinitiators (PM‐MIs ($\overline M _{\rm n}$ = 1 900–15 000; PDI = 1.12–1.23)) transformed from PM‐OHs in ≈ 100% conversion initiated ATRPs of styrene to construct PM‐b‐PS copolymers. The GPC traces indicated the successful extension of PS segment ($\overline M _{\rm n}$ of PM‐b‐PS = 5 000–41 800; PDI = 1.08–1.23). Such copolymers were characterized by ^1^H NMR and DSC.

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