摘要
胆红素是一种内源性毒素,当人体肝脏系统受损或代谢受阻时,则在体内累积,引起高胆红素血症,其具有神经毒性,严重时甚至会危及生命。无机纳米材料作为胆红素吸附剂越来越受到关注,但也存在因团聚而吸附效率降低、因颗粒过小而容易泄漏的问题。以聚偏氟乙烯(PVDF)为基膜原料,掺杂纳米TiO2颗粒,DMAc为溶剂、PVP为致孔剂,通过干湿相转化法,制得TiO2/PVDF共混微滤膜。当铸膜液中PVDF浓度为10%(质量)、TiO2含量为1%(质量)、PVP含量为6%(质量)时,制备的TiO2/PVDF共混微滤膜的胆红素特异性吸附显著。电镜照片及EDX能谱发现,该膜内部及孔隙中均匀分布TiO2颗粒,颗粒无团聚现象。实验还考察了胆红素初始浓度、吸附时间、吸附温度、pH等吸附条件的影响。
Bilirubin is an endogenous toxin,and accumulated in the body when hepatic injure is happened and excretion is hindered.The high level of bilirubin in the body,i.e.,hyperbilirubinemia,manifests neurotoxicity,and threatens life even in serious case.Inorganic nanomaterials have attracted more and more attention as bilirubin adsorbents.However,some problems in bilirubin adsorption with using nanomaterials exist such as a decreasing adsorption efficiency due to agglomeration,and easy leakage because of small particle size.In this paper,TiO2/PVDF blend microfiltration membrane was prepared by dry-wet phase inversion,which the polyvinylidene fluoride(PVDF)as a matrix material,blended with nano-TiO2 particles,DMAc as solvent and PVP as porogen.When PVDF concentration was 10%(mass),TiO2 content was 1%(mass)and PVP content was 6%(mass),the prepared TiO2/PVDF blend microfiltration membrane showed significantly specific adsorption for bilirubin.SEM and EDX showed that TiO2 particles were evenly distributed in the membrane and in the pores without agglomeration.The effects of initial bilirubin concentration,adsorption time,adsorption temperature,pH and other adsorption conditions were also investigated.
作者
鞠佳
祁文旭
孔鹏飞
汤佳玉
梁飞雪
张晓欣
贺高红
杨磊
JU Jia;QI Wenxu;KONG Pengfei;TANG Jiayu;LIANG Feixue;ZHANG Xiaoxin;HE Gaohong;YANG Lei(College of Chemistry,Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun 113001,Liaoning,China;State Key Laboratory of Fine Chemicals,Department of Chemical Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2020年第6期2705-2712,共8页
CIESC Journal
基金
国家自然科学基金项目(21606120,21604034,21527812,U1663223)
大学生创新创业基金项目(201910148049)。
关键词
纳米粒子
聚合物
共混膜
吸附
胆红素
nanoparticles
polymers
blend membranes
adsorption
bilirubin
