Study on Structure and Properties of Polysulfone Membranes Using Ionic Liquid [n-C16mim][BF4] as a New Structure-Controlled Additive

Ying Ying Ding; Ya Mei Zhao; Chang Zheng Zheng; Dong Huai Tu

doi:10.4028/www.scientific.net/KEM.561.125

Paper Titles

Numerical Study on Heat Transfer Enhancement Performence of the Helical Blade Rotors
p.101

Analysis on Modifying Asphalt by Rubber Powder
p.107

Comparative Study of the Low-Temperature Single Step Mixing and Multi-Stage Process Mixing
p.113

Experimental Analysis of the Damage Zone around Crack Tip for Rubberlike Materials under Mode-I Fracture Condition
p.119

Study on Structure and Properties of Polysulfone Membranes Using Ionic Liquid [n-C₁₆mim][BF₄] as a New Structure-Controlled Additive
p.125

Numerical Simulation of the Effect of Particle Random Spatial Distribution on the Thermal Conductivity of Composites
p.130

Research on the Preparation of the Low Density Material with High Volume Filling Rate of Phenolic Hollow Microsphere
p.135

Study on Transient Heat Transfer of Micro-Injection Molded Structures Based on the Finite Element Method
p.141

Thermal Conductivity of EPDM Rubber Filled with Modified Nano-AlN
p.146

HomeKey Engineering MaterialsKey Engineering Materials Vol. 561Study on Structure and Properties of Polysulfone...

Study on Structure and Properties of Polysulfone Membranes Using Ionic Liquid [n-C₁₆mim][BF₄] as a New Structure-Controlled Additive

Abstract:

Introducing ionic liquid [n-C16mim][BF4] as a new structure-controlled additive, Polysulfone (PSf) membranes were prepared by the wet-phase-inversion using [n-C16mim][BF4] into the casting solution (PSf/NMP). The scanning electron microscope and the atomic force microscopy were utilized to visualize the cross-sections of the membranes to gain more better understanding the structure-controlled ability of [n-C16mim][BF4] and surface morphologies of the membrane. The results indicate that the structures of the membranes were typical bilayer asymmetric finger-pores structure. [n-C16mim][BF4] has stronger ability of the pore-forming. Especially, at the 4:76 ratio of [n-C16mim][BF4]/NMP in the polymer solution ,the membrane has the asymmetric structure and good separation properties of the solution flux. The PSf membrane has the 0.45~0.65μm dimpling close to surface layer, and the retention rate and solution flux of the prepared membrane are 95.2% and 137.5 L•h-1•m-2. Meanwhile, [n-C16mim][BF4] partially retained in the prepared Polysulfone membrane reduced the contact angles of Polysulfone membranes, improving the hydrophilic properties of the membranes.