CoAl-LDH@M-PP MB复合熔喷材料的制备及其吸附分离性能  

Preparation of CoAl-LDH@M-PP MB Composite Melt-blown Materials and Their Adsorption and Separation Properties

作　　者：唐甄婧 孙伊宁 谢有秀 陈高原 孙辉[1,2] 于斌 Zhen-jing Tang;Yi-ning Sun;You-xiu Xie;Gao-yuan Chen;Hui Sun;Bin Yu(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312000)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),杭州310018 [2]浙江省现代纺织技术创新中心,绍兴312000

出　　处：《高分子学报》2025年第4期611-622,共12页Acta Polymerica Sinica

基　　金：浙江省自然科学基金项目(基金号LTGS23E030005)资助.

摘　　要：为使聚丙烯熔喷非织造材料(PP MB)具有良好的染料吸附和油水分离性能,首先通过聚多巴胺(PDA)对PP MB表面进行亲水改性得到M-PP MB,再利用水热法在M-PP MB表面一步原位合成钴铝基层状双金属氢氧化物(CoAl-LDH),得到复合熔喷材料CoAl-LDH@M-PP MB.通过对复合材料的形貌、结构及其染料吸附和油水分离性能进行表征,结果表明:当Co与Al的原料比为1:9时,制备的CoAl-LDH@M-PP MB-1/9表面的CoAl-LDH为边缘呈尖刺状的圆片形,在25℃、刚果红(CR)水溶液浓度为50 mg/L的条件下,CoAl-LDH@M-PP MB-1/9对CR的吸附效率在30 min内可达99.00%以上;当以正己烷为油相时,CoAl-LDH@M-PP MB-1/9对正己烷/水混合物的分离效率可达到99.33%,在80次重复使用期间,CoAl-LDH@M-PP MB-1/9对正己烷/水混合物的油水分离效率均大于97.41%,表明其具有出色的油水分离及重复使用性能.In order to make polypropylene melt-blown nonwoven(PP MB)have good dye adsorption and oil-water separation properties,M-PP MB first was prepared by hydrophilic modification of PP MB surface with polydopamine(PDA).Then Co-Al-based Layered Double Hydroxide(CoAl-LDH)were fixed on the surface of M-PP MB by one-step in situ hydrothermal synthesis to obtain CoAl-LDH@M-PP MB composite melt-blown nonwovens.The effects of the synthesis process conditions on the morphology and structure of CoAl-LDH@M-PP MB were explored,and the organic dye adsorption performance and oil-water separation performance were investigated.The results showed that when the raw material concentration ratio of Co to Al is 1:9,CoAl-LDH on the surface of the prepared CoAl-LDH@M-PP MB-1/9 presents disc shape with a sharp spine edge.Under the initial concentration of Congo red(CR)aqueous solution of 50 mg/L at 25 oC,the adsorption efficiency of CoAL-LDH@M-PPMB-1/9 for CR can reach over 99.00%within 30 min.When n-hexane is used as the oil phase,the separation efficiency of CoAl-LDH@M-PP MB-1/9 for n-hexane/water mixture can reach 99.33%,during 80 times of reuse,the oil-water separation efficiency of CoAl-LDH@M-PPMB-1/9 for n-hexane/water mixture is still greater than 97.41%,which shows that it has excellent oil-water separation and reuse performance.

关 键 词：聚丙烯 熔喷非织造材料 钴铝基层状双金属氢氧化物 染料吸附 油水分离 

分 类 号：TQ028.8[化学工程]