Abstract:

The Ti/PbO2 electrode was prepared by the thermal decomposition and electro-deposition method.The acrylamide（AM）and acrylic acid（AA）were polymerized to prepare poly（acrylamide-co-acrylic acid）on the Ti/PbO2 electrode.The reaction products and kinetics of the process were discussed.The molecular weight of the poly（acrylamide-co-acrylic acid）was measured by viscosity method.The product was discussed by infrared spectroscopy（IR）and cyclic voltammetry curves（CV）.The influence on concentration of monomer，current density and initiator concentration were investigated.The results showed that acrylamide and acrylic acid can be polymerized to poly（acrylamide-co-acrylic acid）by electrocatalytic polymerization under the effects of both cerium Ce（Ⅳ）and electrocatalytic systems.The best technological parameters were obtained：T=20℃，n（AM）∶n（AA）=2.3∶1，ω［Ce（Ⅳ）］=0.8%，I=0.125 A·cm^-2，ω（H₂SO₄）=0.5 mol·L^-1.The molecular weight of polyacrylamide was 6.5×105.The conversion rate could be increased to 70%.

Key words: FONT-FAMILY: 宋体, mso-bidi-font-size: 12.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-ascii-font-family: Times New Roman">电催化聚合；丙烯酰胺；丙烯酸；聚（丙烯酰胺FONT-FAMILY: Times New Roman,serif, mso-bidi-font-size: 12.0pt, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">-co-FONT-FAMILY: 宋体, mso-bidi-font-size: 12.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-ascii-font-family: Times New Roman">丙烯酸）

摘要：

采用热分解和电沉积的方法制备了Ti/PbO2电极，并在Ti/PbO2电极的电催化作用下，在引发剂硝酸铈铵存在的条件下，成功将丙烯酰胺（AM）和丙烯酸（AA）共同聚合为聚（丙烯酰胺-co-丙烯酸）［P（AM-co-AA）］。利用红外光谱（IR）和循环伏安曲线（CV）讨论了共聚产物及其过程的动力学规律；采用黏度法测定了共聚产物的分子量；考察了在不同单体配比的条件下电流密度、引发剂浓度对共聚产物分子量和共聚反应单体转化率的影响。结果表明：丙烯酰胺和丙烯酸可以在硝酸铈铵Ce（Ⅳ）和电化学催化共同作用下共聚；在单体配比n（AM）∶

关键词: FONT-FAMILY: 宋体, mso-bidi-font-size: 12.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-ascii-font-family: Times New Roman">电催化聚合；丙烯酰胺；丙烯酸；聚（丙烯酰胺FONT-FAMILY: Times New Roman,serif, mso-bidi-font-size: 12.0pt, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">-co-FONT-FAMILY: 宋体, mso-bidi-font-size: 12.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-ascii-font-family: Times New Roman">丙烯酸）