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1、第*期尚宏周等:温敏型表面离子印迹聚合物的制备及性能·9·温敏型表面离子印迹聚合物的制备及性能尚宏周，张兴，孙晓然，何俊男，叶欣阳，王皓卿（华北理工大学化学工程学院，河北唐山063210）摘要：以多壁碳纳米管为(MWCNTs)为基质，N-异丙基丙烯酰胺(NIPAM)为温敏单体，丙烯酰胺、丙烯酸为功能单体，N,N-亚甲基双丙烯酰胺为交联剂，Ni2+为模板，采用反相悬浮法制得温敏型离子印迹材料(IIPs)。采用FTIR、XRD、TG、SEM等对其进行了结构表征，采用丁二酮肟可见分光光度法对印迹聚合物的吸附性能进行了考察。结果表明：通过改变温度可以控制印迹聚合物的吸附与脱附效率，在最佳吸附温
2、度（40℃）下，IIPs对Ni2+最大吸附量为33.80mg/g，该吸附过程符合热力学Langmuir模型和准二级动力学模型，在25℃时脱附效率远大于50℃时脱附效率。在竞争离子Pb2+和Cd2+存在时，Ni2+/Pb2+和Ni2+/Cd2+的选择系数分别为12.62和16.12，说明IIPs具有对Ni2+较强的识别能力。关键词：温度感应；多壁碳纳米管；离子印迹；动力学；热力学；水处理技术与环境保护中图分类号：0647.3文献标识码：A文章编号：1003-5214(2018)00-0000-00PreparationandPropertiesofTemperature-sensitiv
3、eSurfaceIonImprintedPolymersSHANGHong-zhou,ZHANGXing,SUNXiao-ran,HEJun-nan,YEXin-yang,WANGHao-qing(CollegeofChemicalEngineering,NorthChinaUniversityofScienceandTechnology,Tangshan063210,Hebei,China)Abstract:Anoveltemperature-sensitivenickelionimprintedpolymer(IIPs)basedonmulti-walledcarbonnanotu
4、bes(MWCNTs)wassynthesizedbyinversesuspensionmethodusingN-isopropylacrylamide(NIPAM),acrylamideandacrylicacidasfunctionalmonomers,N,N-methylenebis-acrylamideascross-linker,andNi(II)astemplatemolecule.ThesamplewascharacterizedbyFouriertransforminfraredspectrometer(FTIR),X-raydiffraction(XRD),therm
5、ogravimetry(TG)andscanningelectronmicroscopy(SEM).Theadsorptionpropertiesoftheimprintedpolymerwereinvestigatedbyultraviolet-visiblespectrophotometry.Theadsorptionpropertiesofionimprintedpolymerwereinvestigatedbydimethylglyoximevisiblespectrophotometry.Theresultsindicatedthatchangingthetemperatur
6、ecouldcontroltheadsorptionanddesorptionefficiencyofimprintedpolymer.ThemaximumadsorptioncapacityofIIPstoNi2+was33.80mg/gattheoptimumadsorptiontemperatureof40℃.TheadsorptionisothermobeyedLangmuirmodel,andtheadsorptionkineticscouldberepresentedbypseudosecond-orderkinetic.ThedesorptionefficiencyofI
7、IPstoNi2+at25℃wasmuchgreaterthanthatat50℃.InthepresenceofcompetitiveionsPb2+andCd2+,theselectivitycoefficientsofNi2+/Pb2+andNi2+/Cd2+were12.62and16.12,respectively,indicatingthatIIPshadastrongabilitytorecognizeNi2+.Keywords:
