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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of two-end-functionalized copolymer of styrene and methyl methacrylate via living radical polymerization
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Synthesis of two-end-functionalized copolymer of styrene and methyl methacrylate via living radical polymerization

机译：活性自由基聚合法合成苯乙烯和甲基丙烯酸甲酯的两端官能化共聚物

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摘要

The random copolymers (HO-P(St-r-MMA)-COOH) of styrene (St) and methyl methacrylate (MMA) with hydroxyl group at one end and carboxyl group at another end were synthesized by nitroxide-mediated living radical polymerization initiated by 4,4'-azobis(4-cyanovaleric acid) (ACVA) and 4-hydroxyl-2,2,6,6-tetramethylpiperidineoxyl (TEMPO-OH). The experimental results have shown that all synthesized copolymers have narrow molecular weight distribution. The conversion of monomers and the molecular weight of copolymer increase with polymerization time. Thus, a copolymerization mechanism containing living radical polymerization is suggested. The use of this method permits the copolymer with two functional chain ends and controllable molecular weight as well as low molecular weight distribution. X-ray photoelectron spectroscopy result shows that the synthesized copolymers can be tethered on the surface of silicon wafer through the reaction between the hydroxyl end of the copolymer and native oxide layer on the wafer. In addition, an organic/inorganic hybrid surface has achieved by treating copolymer tethered Si-substrates with SiCl4 vapor. (c) 2006 Wiley Periodicals, Inc.
机译：苯乙烯（St）与甲基丙烯酸甲酯（MMA）的一端为羟基，另一端为羧基的无规共聚物（HO-P（St-r-MMA）-COOH）是由硝基氧化物介导的活性自由基聚合反应合成的通过4，4′-偶氮二（4-氰基戊酸）（ACVA）和4-羟基-2,2,6,6-四甲基哌啶氧基（TEMPO-OH）。实验结果表明，所有合成的共聚物均具有窄的分子量分布。单体的转化率和共聚物的分子量随聚合时间而增加。因此，提出了包含活性自由基聚合的共聚机理。该方法的使用允许共聚物具有两个官能链端和可控制的分子量以及低分子量分布。 X射线光电子能谱结果表明，通过共聚物的羟基端与晶片上的自然氧化物层之间的反应，可以将合成的共聚物束缚在硅晶片的表面。另外，有机/无机杂化表面通过用SiCl 4蒸气处理共聚物拴系的Si-基底而获得。 （c）2006年Wiley Periodicals，Inc.

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