Synthesis of Benzotriazole Based Polymers and the Applications on Surface Protection of Copper
| Autor: | Yu-Ming Lee, 李佑茗 |
|---|---|
| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 Copper is an essential metal in the chemical and microelectronic industry because of its high thermal and electrical conductivities, however, copper is unstable in the oxygen-containing electrolytes. Thus, many relative researches have been focus on the substantial improvement of copper corrosion stability and have been achieved by the use of inhibitors. Based on the importance of copper and relative study, we synthesize novel inhibitors and provide new methods to protection of copper. In chapter 4-1, we connect self-condensation and self-assembly concepts to devise a novel poly(5-methylenebenzotriazol-N-yl), a polymer also named as BTA-poly herein. The unique polymer contains a terminal benzotriazole (BTA) moiety to serve as an anchor to be adsorbed onto the copper surface and a hydrophobic tail from condensation polymerization of 5-chloromethylbenzotriazole to protect the copper surface against solution or air diffusion for anticorrosion/antioxidation. Compared with benzotriazole, which is one of the best corrosion inhibitors for copper, BTA-poly achieves better protection under the same test condition. Using self-assembly monolayers (SAMs) is a smart and rapid method to protect copper, however, if we apply higher potential on metal surface, SAMs may be peeling and cause metal corrosion in corrosive medium. In chapter 4-2, we synthesize 5-hydroxymethylbenzotriazole (donated as 5-BTACH2OH), which itself has better inhibitory efficiency in chloride medium. Moreover, we can use photoinduced polymerization method to control its inhibitory activity and avoid the SAMs flaking off copper surface on extra potential. By this way, we can perform a series of functional transformation steps to improve wettability of metal surface and control inhibitory efficiency well. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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