Porous Structures of C‑Shaped Polypropylene Fibers and Oil‑Absorbing Performance of Their Spun‑Bond Non‑woven Fabrics  

作　　者：Zheng Li Guojun Jiang Yawen Zhao Hanyue Kang Zhiling Chen Mingyu Zhao Zhijuan Sun Congjie Gao Lixin Xue 

机构地区：[1]Center for Membrane Separation and Water Science&Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China [2]Zhijiang College,Zhejiang University of Technology,Shaoxing 312000,China [3]College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China [4]Institute of New Materials&Industrial Technologies,Wenzhou University,Wenzhou 325024,China

出　　处：《Advanced Fiber Materials》2024年第4期1092-1107,共16页先进纤维材料（英文）

基　　金：supported by the National Natural Science Foundation of China NSFC-U1809213;National Natural Science Foundation of China NSFC-21975222.

摘　　要：Spun-bond non-woven fabrics(NWFs)made of porous C-shaped polypropylene fibers were applied in rapid oil absorption and effective on-line oil spillage monitoring.It is of great interest to further optimize the absorption properties of these materials by tuning their preparation parameters as well as characterize them with theoretical models.In this paper,effects of die shape,diluent composition(mixtures of dibutyl and dioctyl phthalate),and drawing speed on their porous structure and oil-absorbing performance were systematically investigated and characterized based on two novel concepts,i.e.,the equivalent capillary tube pore radius and the kinetic pore tortuosity(barrier to access)derived from the simplest capillary tube liquid-filling model.The use of higher dibutyl phthalate fractions under faster drawing speeds resulted in the formation of larger and more connected inner filament sub-micron pores.Three stages of tube filling relating to inter-filament large pores,medium pores close to bonding points,and inner filament small pores were observed in the spun-bond NWFs.Continuous oil recovery rates of 986 L·m^(-2)·h^(-1) with an oil/water selectivity of 6.4 were achieved in dynamic skimming experiments using simulated spilled oil.

关 键 词：Diluent composition TIPS process Shaped fiber Pore structure Oil absorption 

分 类 号：TB33[一般工业技术—材料科学与工程]