Polyaniline-poly(vinylidene fluoride) blend microfiltration membrane and its spontaneous gold recovery application

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2018,（1）
• 页码范围: 118-126
• 页数: 9页
• 语种: 英文
• DOI: 10.1007/s11426-017-9037-5

摘要

Structural regular polyaniline was synthesized via a modified-chemical oxidative polymerization reaction.Highly hydrophilic polyaniline (PANi) and polyaniline-poly(vinylidene fluoride) blend (PANi-PVDF) membranes were prepared by solution casting and phase inversion techniques.Both of the mechanical and filtration properties of the membranes depend on the polymer composition and doping level of the blends.The elasticity of the membrane is greatly improved upon introducing poly(vinylidene fluoride) into the blend.The water permeability of the blend membranes is further enhanced when the membranes are doped with hydrochloric acid.The PANi-PVDF blend membranes are capable of recovering metallic gold from the acid/halide leaching streams spontaneous and sustainably,and are promising candidates for wastewater treatments in electronic industries.