盐酸多巴胺处理对PLA非织造布油水分离性能的影响  

Effect of dopamine hydrochloride treatment on oil-water separation performance of PLA nonwoven fabric

作　　者：王俊毅 亓世超 丁莉 窦冠显 明津法[1,4,5] WANG Junyi;QI Shichao;DING Li;DOU Guanxian;MING Jinfa(Qingdao University,Qingdao,266071,China;Shandong Institute for Product Quality Inspection,Jinan,250102,China;Binzhou Weiqiao National Science and Technology Higher Technology Research Institute,Binzhou,256212,China;Shandong Engineering Research Center for Special Nonwovens,Qingdao,266071,China;State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao,266071,China)

机构地区：[1]青岛大学,山东青岛266071 [2]山东省产品质量检验研究院,山东济南250102 [3]滨州魏桥国科高等技术研究院,山东滨州256212 [4]特型非织造材料山东省工程研究中心,山东青岛266071 [5]生物多糖纤维成形与生态纺织国家重点实验室,山东青岛266071

出　　处：《棉纺织技术》2025年第1期15-21,共7页Cotton Textile Technology

基　　金：教育部产学研协同育人项目(BINTECH-KJZX-20220831-17);生物多糖纤维成形与生态纺织国家重点实验室课题(RZ2000003348,ZDKT202109)。

摘　　要：为了研究盐酸多巴胺对PLA非织造布油水分离性能的影响,采用质量分数为0.5%~1.0%的盐酸多巴胺对PLA熔喷非织造布和PLA纺黏非织造布进行处理,并对处理后的样品进行性能测试。结果表明:随着盐酸多巴胺质量分数的增加,处理后的PLA非织造布纤维表面盐酸多巴胺黏附量增加,且非织造布由疏水性转变为超亲水性;PLA纺黏非织造布单位面积质量的变化对盐酸多巴胺的黏附量影响较小;PLA非织造布拉伸应力随着盐酸多巴胺溶液质量分数的增加呈现先下降后上升的趋势;PLA熔喷非织造布对CCl_(4)/水和正己烷/水混合溶液正常表现为水可快速通过,而油性溶剂被拦截;相反,材料经油性溶剂浸润,油性溶剂可快速通过,而水被拦截的自主选择性,且其油水分离通量为1671.123 L/(m^(2)·h)和1697.951 L/(m^(2)·h);PLA纺黏非织造布对CCl_(4)/水和正己烷/水混合溶液的油水分离通量达到3852.743 L/(m^(2)·h)和3922.961 L/(m^(2)·h);PLA非织造布对正己烷/水混合溶液重复分离10次后,分离通量降幅较小,油水分离循环性较好。In order to study the influence of dopamine hydrochloride treatment on oil-water separation performance of PLA nonwoven fabric,dopamine hydrochloride with mass fraction of 0.5%~1.0% was adopted for the treatment of PLA melt-blown nonwovens and PLA spunbond nonwovens,and the property of treated sample were tested.The results showed that the amount of dopamine hydrochloride adhesion on the surface of PLA nonwoven fibers after treatment was increased as the mass fraction increase of dopamine hydrochloride.And the nonwovens were changed from hydrophobicity to super hydrophilicity.The influence of mass area ratio change of PLA spunbond nonwovens on the adsorption amount of dopamine hydrochloride was small.The tensile stress of PLA nonwovens showed a trend of decrease first and then increase as the increase of dopamine hydrochloride solution mass concentration.For CCL_(4)/water and n-hexane/water mixing solution,PLA nonwovens showed that water could pass but oily solvent was intercepted.On the contrary,the material after immersing with oily solvent could let oily solvent pass quickly but would intercept water with autonomous selectivity.The oil-water separation volume was 1671.123 L/(m^(2)·h)and 1697.951 L/(m^(2)·h).The oil-water separation volume of PLA spunbond nonwovens on CCL4/water and n-hexane/water mixing solution was reached up to 3852.743 L/(m^(2)·h)and 3922.961 L/(m^(2)·h).After ten times of repeating separation on n-hexane/water mixing solution for PLA nonwoven,the separation flux was decreased with smaller amplitude,the oil-water separation cyclicity was better.

关 键 词：聚乳酸 非织造 亲疏水性 油水分离 盐酸多巴胺 

分 类 号：TS18[轻工技术与工程—纺织材料与纺织品设计]