Triallylstannyllithium-allyllithium as an initiator for the anionic reversible chain transfer polymerization of 1,3-butadiene
✍ Scribed by Yasuo Horikawa; Takeshi Takeda; Toshiki Takizawa; Taro Akazawa; Ryota Fujio; Tatsuo Fujimaki
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 435 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0887-624X
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✦ Synopsis
The anionic polymerization of 1,3-butadiene using a novel metalloidal anion initiator, triallylstannyllithium (TALi)-allyllithium ( ALi), was studied. The TALi-ALi initiated anionic polymerization of 1,3-butadiene gave the star polymer along with the linear polybutadiene (PBD). The star polymer consisted of three PBD branches and a central tin atom. What is striking is a fact that the number-average molecular weights (M,) and molecular weight distribution of three PBD branches and linear PBD were almost identical. A reversible chain transfer polymerization mechanism, which includes the equilibrium between tri(macroally1) - stannyllithium and macroallylic anion, is proposed.