Synthesis of Poly(tetrahydrofuran) with a Nitroxyl Radical at the Chain End and Its Application to Living Radical Polymerization
Synthesis of Poly(tetrahydrofuran) with a Nitroxyl Radical at the Chain End and Its Application to Living Radical Polymerization
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链端硝氧基聚四氢呋喃的合成及其在活性自由基聚合中的应用
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
A. Sugita
中科院分区：
文献类型：
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作者：
E. Yoshida;A. Sugita
进行了链端具有2,2,6,6-四甲基哌啶-1-氧基(TEMPO)部分的聚(四氢呋喃(THF))的合成及其作为苯乙烯活性自由基聚合的聚合物抗衡自由基的应用。通过由三氟甲磺酸甲酯引发的活性聚(THF)与4-氧基-TEMPO钠的反应，可以定量有效地引入TEMPO部分。所得聚合物可以在苯乙烯与过氧化苯甲酰的自由基聚合中作为聚合物抗衡自由基，定量地得到相应的嵌段共聚物。此外，发现这种自由基聚合按照活性机制进行，因为嵌段共聚物的分子量随着苯乙烯转化率的增加而线性增加，并且与聚(THF)的初始浓度成反比。
The synthesis of poly(tetrahydrofuran (THF)) having 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) moiety at the chain end and its application as a polymeric counter radical to the living radical polymerization of styrene were performed. The TEMPO moiety could be introduced in quantitative efficiency by the reaction of living poly(THF) initiated by methyl trifluoromethanesulfonate with sodium 4-oxy-TEMPO. The resulting polymer could serve as a polymeric counter radical in the radical polymerization of styrene with benzoyl peroxide to give the corresponding block copolymer quantitatively. Furthermore, it was found that this radical polymerization proceeded in accordance with a living mechanism because the molecular weight of the block copolymer linearly increased with increasing conversion of styrene and was inversely proportional to the initial concentration of poly(THF).