聚羟基丁酸酯纳米纤维支撑海藻酸钙纳滤膜制备及抗污染性能

发布时间：2018-07-10 18:09

本文选题：静电纺丝 + 聚羟基丁酸酯　；参考：《高分子材料科学与工程》2017年07期

【摘要】：以聚羟基丁酸酯(PHB)纳米纤维膜为载体,不添加致孔剂,制备了PHB纳米纤维支撑的海藻酸钙(CaAlg)水凝胶纳滤膜(CaAlg-PHB复合膜)。通过扫描电子显微镜观察膜的形貌,研究膜的溶胀性能、拉伸力学性能、亲水性和对乳化油、牛血清蛋白(BSA)溶液的抗污染性能以及对染料的截留性能。结果表明,CaAlg-PHB复合膜的断裂强度与CaAlg自支撑膜相比得到较大提高。乳化油悬浊液和BSA溶液的稳定通量分别为纯水通量的83.82%和86.70%,表明CaAlgPHB复合膜具有良好的抗污染性能。3D超景深显微镜观测显示乳化油在膜表面不粘附,水下二氯甲烷在膜表面的接触角达到148.3°,表明该复合膜在水下超疏油。在0.1 MPa压力下,CaAlg-PHB复合膜对染料刚果红的稳定通量和截留率分别为30.57 L/(m~2·h)和96.95%。
[Abstract]:Calcium alginate (CaAlg) hydrogel nanofiltration membrane (CaAlg-PHB composite membrane) supported by polyhydroxybutyrate (PHB) nanofiltration membrane was prepared without pore-forming agent. The morphology of the film was observed by scanning electron microscope (SEM). The swelling properties, tensile mechanical properties, hydrophilicity, antifouling properties of emulsion oil, bovine serum protein (BSA) solution and dye retention were studied. The results show that the fracture strength of CaAlg-PHB composite membrane is higher than that of CaAlg self-supporting membrane. The stable fluxes of emulsified oil suspensions and BSA solutions were 83.82% and 86.70 of pure water flux respectively, which indicated that CaAlgPHB composite membrane had good antifouling property. The contact angle of underwater dichloromethane on the surface of the film is 148.3 掳, which indicates that the composite membrane is super oil thinning under water. Under 0.1 MPA pressure, the stable flux and rejection of Congo red of CaAlg-PHB composite membrane were 30.57 L / (m ~ 2 h) and 96.95 L / (m ~ (-1), respectively.
【作者单位】：天津工业大学分离膜与膜过程国家重点实验室;山东省氟化学化工材料重点实验室;天津工业大学纺织学院;
【基金】：国家自然科学基金资助项目(21304037) 天津市应用基础与前沿技术研究计划(16JCZDJC37500) 天津市科技特派员项目(16JCTPJC44800) 大学生创新创业训练计划(201510058080,201510058018) 天津市科技支撑计划重点项目(15ZCZDSF00880) 山东省氟化学化工材料重点实验室开放基金
【分类号】：TQ051.893

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