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第 35 卷第 10 期                            精   细   化   工                                 Vol.35, No.10
             2018 年 10 月                             FINE CHEMICALS                                Oct.   2018


              水处理技术与环境保护
                        含聚甲基丙烯酸二甲氨基乙酯刷的丝瓜络


                                              合成及吸附性能



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                             刘新华      1,2 ,钱   勇 ,曹珊珊 ,方寅春 ,储兆洋
                 (1.  安徽工程大学  纺织服装学院,安徽  芜湖   241000;2.  安徽省纺织行业科技公共服务平台,安徽
                 芜湖  241000)
                 摘要:以表面含溴的丝瓜络为大分子引发剂(loofah-Br),溴化铜(CuBr 2 )/五甲基二乙烯基三胺(PMDETA)
                 /抗坏血酸(V C )为催化体系,通过电子转移活化再生催化原子转移自由基聚合(ARGET-ATRP)方法,制备了
                 含聚甲基丙烯酸二甲氨基乙酯刷的丝瓜络接枝共聚物 loofah-g-PDMAEMA;采用傅里叶红外光谱(FTIR)及热
                                                                                  2+
                 重分析(TGA)对其结构和性能进行了表征;考察了 loofah-g-PDMAEMA 吸附 Pb 的主要影响因素和对 Pb                          2+
                                                            2+
                 的重复吸附性能。结果表明,loofah-g-PDMAEMA 对 Pb 的最佳吸附条件为:温度 30 ℃、pH=5.5、吸附时间 5 h,
                 在该条件下最大吸附量可达 107.8 mg/g;吸附过程符合准二级动力学模型;经过 4 次重复使用后,吸附量可达
                 首次吸附量的 84.73%。
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                 关键词:丝瓜络;电子转移活化再生催化原子转移自由基聚合;甲基丙烯酸二甲氨基乙酯;Pb 吸附;水处理
                 技术与环境保护
                 中图分类号:TQ 341.9      文献标识码:A     文章编号:1003-5214 (2018) 10-1724-07


               Synthesis and Adsorption Properties of Loofah Containing Polymethacrylic

                                  Acid Two Methylamino Ethyl Ester Brushes

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                       LIU Xin-hua , QIAN Yong , CAO Shan-shan , FANG Yin-chun , CHU Zhao-yang
                 (1. College of Textiles and Clothing, Anhui Polytechnic University, Wuhu 241000, Anhui, China; 2. Technology Public
                 Service Platform for Textile Industry, Wuhu 241000, Anhui, China)
                 Abstract: Loofah graft copolymer (loofah-g-PDMAEMA) was synthesized via electron transfer for atom
                 transfer radical polymerization (ARGET-ATRP) using loofah containing bromide side-group (loofah-Br) as
                 macroinitiator,  N,N,N,N,N-pentamethyldiethylenetriamine (PMDETA)/copper (Ⅱ) bromide (CuBr 2)/
                 vitamin C as a catalytic system. The chemical structure and thermal stability of the modified loofah were
                 characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA).
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                 The main factors influencing the adsorption of Pb  by loofah-g-PDMAEMA and the repeated adsorption
                                 2+
                 performance of  Pb  on loofah-g-PDMAEMA  were investigated. The results indicated that loofah-g-
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                 PDMAEMA achieves the highest adsorption capacity of 107.8 mg/g for Pb under the best  adsorption
                 conditions of temperature 30 ℃, pH value 5.5, and adsorption time 5 h. The adsorption process fits well
                 with the pseudo-second-order kinetic model. Besides, after four reuses, the adsorption capacity can reach
                 84.73% of the first adsorption capacity.
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                 Key words: loofah; ARGET-ATRP;  dimethylaminoethyl  methacrylate; Pb  adsorption;  water treatment
                 technology and environmental protection
                 Foundation items:  National Natural Science Foundation  of China  (21302011); Major Science and
                 Technology Project of Anhui Province (16030701088)



                 收稿日期:2018-04-27;  定用日期:2018-09-10; DOI: 10.13550/j.jxhg.20180309
                 基金项目:国家自然科学基金(21302011);安徽省重大科技专项(16030701088)
                 作者简介:刘新华(1964—),男,教授,硕士生导师,电话:0553-2871264,E-mail:liuxinhua66@163.com。
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