Synthesis and Characterization of a Novel Perfluorocyclobutyl Aromatic Ether-Based ABA Triblock Copolymer
Synthesis and Characterization of a Novel Perfluorocyclobutyl Aromatic Ether-Based ABA Triblock Copolymer
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DOI：
10.1021/ma0504062
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发表时间：
2005-07
期刊：
影响因子：
5.5
通讯作者：
Xiaoyu Huang;Guolin Lu;D. Peng;Sen Zhang;F. Qing
中科院分区：
文献类型：
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作者：
Xiaoyu Huang;Guolin Lu;D. Peng;Sen Zhang;F. Qing
采用苯乙烯原子转移自由基聚合（ATRP）和三氟乙烯基单体阶梯生长环加成热聚合相结合的方法，合成了一种新型全氟环丁基芳醚基ABA三嵌段共聚物（A：聚苯乙烯嵌段；B：全氟环丁基芳醚基含氟聚合物嵌段）。我们首先合成了一种含有三氟乙烯基的新型ATRP引发剂，该引发剂可以可控地引发苯乙烯的ATRP，得到分子量分布窄（Mw/Mn < 1.10）、性质明确的聚苯乙烯。表观聚合速率与单体浓度呈一阶关系，分子量随单体转化率的增加呈线性增加。其次，采用溶液聚合法制备含全氟环丁基芳醚单元的含氟聚合物，与含三氟乙烯基的ATRP引发剂反应，得到两端有两个引发基的ATRP大引发剂。macroinitia……
A novel perfluorocyclobutyl aromatic ether-based ABA triblock copolymer (A: polystyrene block; B: perfluorocyclobutyl aromatic ether-based fluoropolymer block) was synthesized by combination of atom transfer radical polymerization (ATRP) of styrene and thermal step-growth cycloaddition polymerization of trifluorovinyl monomer. We first synthesized a new ATRP initiator containing the trifluorovinyl group, which can initiate ATRP of styrene in a controlled way to obtain well-defined polystyrene with narrow molecular weight distribution (Mw/Mn < 1.10). The apparent polymerization rate exhibited first-order relation with respect to the concentration of monomer and the molecular weight increases linearly with the conversion of monomer. Second, fluoropolymer containing a perfluorocyclobutyl aromatic ether unit was prepared by solution polymerization and followed by reacting with ATRP initiator containing a trifluorovinyl group to get ATRP macroinitiator with two initiation groups at both ends. The macroinitia...