RAFT Polymerization of 1-Ethoxyethyl Acrylate: A Novel Route toward Near-Monodisperse Poly(acrylic acid) and Derived Block Copolymer Structures.
RAFT Polymerization of 1-Ethoxyethyl Acrylate: A Novel Route toward Near-Monodisperse Poly(acrylic acid) and Derived Block Copolymer Structures.
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丙烯酸 1-乙氧基乙酯的 RAFT 聚合：近单分散聚丙烯酸和衍生嵌段共聚物结构的新途径。
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发表时间：
2005
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通讯作者：
F. D. Prez
中科院分区：
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作者：
R. Hoogenboom;U. Schubert;W. V. Camp;F. D. Prez
研究了丙烯酸1-乙氧乙酯(EEA)的可逆加成断裂链转移(RAFT)聚合反应。温度优化表明，最佳聚合温度为70℃。通过简单的加热步骤，可以在温和的条件下得到定义良好的聚丙烯酸(p(AA))，在更恶劣的条件下得到p(AA)的交联网络，从而实现p(EEA)的脱保护。此外，通过凝胶渗透色谱和核磁共振氢谱表征，在甲苯中通过RAFT聚合成功地合成了聚甲基丙烯酸甲酯、聚丙烯酸丁酯、聚甲基丙烯酸甲酯或聚(N，N-二甲氨基)甲基丙烯酸乙酯第一嵌段和p(EEA)第二嵌段。在所有这些实验中，都使用了高吞吐量的工作流程序。还对含p(EEA)的嵌段共聚物进行了脱保护处理，得到了凝胶渗透色谱(GPC)和核磁共振氢谱(1HNMR)均证实的含p(AA)的材料。
The reversible addition fragmentation chain transfer (RAFT) polymerization of 1-ethoxyethyl acrylate (EEA) was demonstrated. Temperature optimization revealed an optimum polymerization temperature of 70 °C. Deprotection of the p(EEA) could be performed by a simple heating step, under mild conditions leading to well-defined poly(acrylic acid) (p(AA)) and under more severe conditions resulting in cross-linked networks of p(AA). In addition, block copolymers with a poly(methyl acrylate), a poly(n-butyl acrylate), a poly(methyl methacrylate), or a poly(N,N-(dimethylamino)ethyl methacrylate) first block and a p(EEA) second block were successfully synthesized by RAFT polymerization in toluene as was demonstrated by GPC and 1H NMR characterization. For all these experiments, a high-throughput workflow procedure was used. Deprotection of the p(EEA) containing block copolymers was also performed, resulting in well-defined p(AA) containing materials as evidenced by both GPC and 1H NMR spectroscopy.