✦ LIBER ✦
Synthesis of Well-Defined Rod-Coil-Rod Polyhexylisocyanate-block-polystyrene-block-polyhexylisocyanate via One-Pot Anionic Polymerization
✍ Scribed by Jun-Hwan Ahn; Jae-Suk Lee
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 142 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A rod‐coil‐rod block copolymer, polyhexylisocyanate‐block‐polystyrene‐block‐polyhexylisocyanate, of controlled molecular weight was synthesized quantitatively via living anionic polymerization using potassium naphthalenide in the presence of sodium tetraphenylborate. The use of K^+^ as the counterion for the polymerization of styrene, and Na^+^ (NaBPh~4~) for the polymerization of isocyanate leads to the formation of a well‐controlled novel triblock copolymer.
magnified image