采用N-[亚苄基-1,2-乙二氨基乙基]-2-溴异丁酰胺为引发剂,联吡啶为配体,溴化亚铜为催化剂,实现了铜表面引发甲基丙烯酸甲酯原子转移自由基聚合,在铜表面形成一层聚甲基丙烯酸甲酯(PMMA)聚合物刷,在0.5mol/L NaCl介质中,采用极化曲线和电化学阻抗法,考察了聚合物刷的电化学性能.结果表明,铜表面接枝的PM-MA分子量达到1.27×10s时,腐蚀电位提高到22 mV,腐蚀电流密度降低到0.88μA/cm2,缓蚀效率达到96.61%,膜的电容值为0.398×10-7F/cm2,在0.5 mol/L NaCl溶液中浸泡24 h后,NaCl水溶液渗透进入PMMA薄膜的百 分比为77.06%.
参考文献
| [1] | 全贞兰,吴培强.铜电极上席夫碱自组装膜的电化学阻抗表征[J].青岛科技大学学报（自然科学版）,2006(04):291-294. |
| [2] | 王春涛,陈慎豪.分子结构对硫脲类化合物在铜表面自组装能力的影响[J].化学学报,2007(05):390-394. |
| [3] | 何建波,周虎林.铜表面聚苯酚耐蚀膜的电化学制备及表征[J].腐蚀与防护,2008(09):540-543. |
| [4] | Zhao, Bin;Brittain, William J. .Synthesis of tethered polystyrene-block-poly(methyl methacrylate) monolayer on a silicate substrate by sequential carbocationic polymerization and atom transfer radical polymerization[J].Journal of the American Chemical Society,1999(14):3557-0. |
| [5] | Jordan, Rainer;Kang, Jung F.;Rafailovich, Miriam H.;Sokolov, Jonathan;Ulman, Abraham .Surface-initiated anionic polymerization of styrene by means of self-assembled monolayers[J].Journal of the American Chemical Society,1999(5):1016-1022. |
| [6] | Baum M.;Brittain WJ. .Synthesis of polymer brushes on silicate substrates via reversible addition fragmentation chain transfer technique[J].Macromolecules,2002(3):610-615. |
| [7] | Nanda AK.;Matyjaszewski K. .Effect of [bpy]/[Cu(I)] ratio, solvent, counterion, and alkyl bromides on the activation rate constants in atom transfer radical polymerization[J].Macromolecules,2003(3):599-604. |
| [8] | B.Zhao;W.J.Brittain .Polymer brushes: surface-immobilized macromolecules[J].Progress in Polymer Science,2000(5):677-710. |
| [9] | Kim JB.;Baker GL.;Bruening ML. .Surface-initiated atom transfer radical polymerization on gold at ambient temperature[J].Journal of the American Chemical Society,2000(31):7616-7617. |
| [10] | Jones DM.;Brown AA.;Huck WTS. .Surface-initiated polymerizations in aqueous media: Effect of initiator density[J].Langmuir: The ACS Journal of Surfaces and Colloids,2002(4):1265-1269. |
| [11] | 周峰,牟宗刚,于波,王博,郝京诚,陈淼,刘维民.金表面聚合物刷及图案化微结构的制备[J].化学学报,2004(15):1437-1442. |
| [12] | Chen RX;Zhu SP;Maclaughlin S .Grafting acrylic polymers from flat nickel and copper surfaces by surface-initiated atom transfer radical polymerization[J].Langmuir: The ACS Journal of Surfaces and Colloids,2008(13):6889-6896. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%