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投稿时间：2015-12-29
投稿时间：2015-12-29
中文摘要: 首先利用聚乙二醇二缩水甘油醚(PEO-DE)、聚二甲基硅氧烷二缩水甘油醚(PDMS-DE)与无水哌嗪以1:1:1的物质的量之比反应合成环氧封端的聚醚胺(ePEA),然后将ePEA分散在水相中与明胶混合,浇铸固化成膜。利用红外光谱(FT-IR)、X射线衍射(XRD)、示差扫描量热法(DSC)和原子吸收光谱(AAS)等手段研究了明胶-环氧聚醚胺交联膜的结构和离子吸附性能。结果表明,与纯明胶膜相比,交联膜中的环氧聚醚胺与明胶之间出现了新的化学交联结构,在水溶液中的稳定性提高;交联膜对Cu2+、Pb2+、Cd2+均有一定的吸附作用,并且吸附能力随着ePEA含量的增加而增加;吸附过程符合二级动力学模型和Langmuir等温模型。
Abstract:Polyethyleneglycol diglycidyl ether (PEO-DE) and polydimethylsiloxane diglycidyl ether (PDMS-DE) were used as difunctional monomers to react with anhydrous piperazine (molar ratio was 1:1:1) to synthesize a novel kind of epoxy poly(ether amine) (ePEA) ended with epoxy groups.Then ePEA was mixed with gelatin in aqueous solution,casting in teflon mold to get dried crosslinked membrane.FT-IR,XRD patterns,DSC and Atomic Absorption Sepectroscopy(AAS) were exploited to study the structure and heavy metal ions adsorption capacities of the gelatin-ePEA crosslinked membrane.Results showed that gelatin was chemically crosslinked by ePEA,which could improve the stability of the gelatin membrane swelling in water.And the gelatin-ePEA crosslinked membrane exhibited a good adsorption ability to Cu2+,Pb2+ and Cd2+ in water,which was increased with the increasing of ePEA content.Adsorption process could be matched with pseudo second order model and Langmuir model.
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| 作者 | 单位 | |
| 张赛 | 上海交通大学化学化工学院, 上海 200240 | |
| 史子兴 | 上海交通大学化学化工学院, 上海 200240 | zxshi@sjtu.edu.cn |
| 印杰 | 上海交通大学化学化工学院, 上海 200240 |
引用本文：
张赛,史子兴,印杰.明胶-环氧聚醚胺交联膜的合成及其对重金属离子的吸附性能[J].功能高分子学报,2016,29(1):29-35.
ZHANG Sai,SHI Zi-xing,YIN Jie.Preparation of Gelatin-Epoxy Poly(ether amine) Crosslinked Membrane and Its Adsorption Behavior for Heavy Metal Ions[J].Journal of Functional Polymers,2016,29(1):29-35.
张赛,史子兴,印杰.明胶-环氧聚醚胺交联膜的合成及其对重金属离子的吸附性能[J].功能高分子学报,2016,29(1):29-35.
ZHANG Sai,SHI Zi-xing,YIN Jie.Preparation of Gelatin-Epoxy Poly(ether amine) Crosslinked Membrane and Its Adsorption Behavior for Heavy Metal Ions[J].Journal of Functional Polymers,2016,29(1):29-35.
