单体
丁基锂
聚合物
阴离子加成聚合
高分子化学
聚合
化学
表面改性
材料科学
有机化学
物理化学
作者
Atsushi Takano,Atsushi Meguro,Tomohiko Kazama,Yoshinobu Isono
标识
DOI:10.1016/s1381-5148(97)00171-5
摘要
Anionic polymerizations of 3,5-dimethoxystyrene (1), 2,4-dimethoxystyrene (2), and 2,4,6-trimethoxystyrene (3) were studied in THF at 195 K using sec-butyllithium as an initiator. Initiation reactions proceeded immediately upon addition of initiator for all monomers, but the propagation rates decreased in the order of 1 2 3. Both the monomers 1 and 2 gave the corresponding polymers having predictable molecular weights and narrow molecular weight distributions. However, the monomer 3 gave no polymer. It was confirmed that lithiation reaction of poly(1) and poly(2) by n-butyllithium in THF at 238 K proceeded with ease at the 4− and 3-positions of phenyl ring, respectively. Lithiated poly(1) and poly(2) are expected to be novel functional polymers for various applications.
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