多孔蒙脱土/醋酸纤维素复合纤维膜的离心纺构筑及其在重金属离子吸附中的应用  

Centrifugal spinning structure of MMT/CA porous composite fiber membrane and its application in heavy metal ion adsorption

作　　者：母情源 张贤 王娟[1,2,3] 任琳琳 李永强 MU Qingyuan;ZHANG Xian;WANG Juan;REN Linlin;LI Yongqiang(School of Textile Science and Engineering,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China;Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China;Engineering Research Center for Eco Dyeing and Finishing of Textiles,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学纺织科学与工程学院,杭州310018 [2]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [3]浙江理工大学生态染整技术教育部工程研究中心,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2020年第2期202-208,共7页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省科技厅一般公益项目(LGG20E030007);“纺织科学与工程”浙江省重中之重一级学科优秀青年基金项目(2016YXQN08);国家自然科学基金项目(51773181,51403189);浙江省清洁染整技术研究重点实验室开放基金(NO.1404)。

摘　　要：为制备出一种绿色环保、重金属离子吸附性能良好的多孔醋酸纤维素(CA)复合纤维膜,选用天然吸附材料蒙脱土(MMT),以CA为基材,通过离心纺丝技术,设计制备MMT/CA多孔复合纤维膜,并将所得纤维膜应用于重金属离子吸附。采用扫描电子显微镜(SEM)、红外光谱仪(FTIR)、X射线光电子能谱仪(EDS)、热重分析仪(TGA)和原子吸收光谱仪(ASS)对复合纤维的形貌结构及吸附性能进行表征。结果表明:在溶剂DCM/DMSO质量配比8∶2时成功制备出具有多孔结构的MMT/CA复合纤维膜;随着MMT质量分数的增加,其Cu2+吸附量也随之增大,当质量分数为3%时最大Cu2+吸附量为44.243 mg/g,并且经过5次解吸循环后,仍保持有80%以上的吸附效果。In order to prepare a porous cellulose acetate(CA)composite fiber membrane with green environmental protection and heavy metal ion adsorption performance,the natural adsorption material montmorillonite(MMT)was selected,and CA was used as the substrate to design and prepare MMT/CA porous composite fiber membrane by centrifugal spinning technology.The fiber membrane gained was applied in heavy metal ion adsorption.The morphology and adsorption properties of the composite fibers were investigated by scanning electron microscopy(SEM),infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(EDS),thermogravimetric analyzer(TGA)and atomic absorption spectrometry(ASS).The results showed that the MMT/CA composite fiber membrane with a porous structure was successfully prepared when the mass ratio of solvent DCM/DMSO was 8∶2.The Cu2+adsorption capacity increased with the increase of MMT mass fraction.When the mass fraction was 3%,the maximum Cu2+adsorption amount was 44.243 mg/g,and after 5 desorption cycles,80%adsorption efficiency was still kept.

关 键 词：离心纺丝 醋酸纤维素 蒙脱土 多孔复合纤维膜 重金属离子吸附 

分 类 号：TS195-6[轻工技术与工程—纺织化学与染整工程]