Preparation of Porous Polymer Membrane with Controllable Pore Size via Spray Spinning

Abstract:

Polymer membranes with fixed pore size or narrow pore size distribution can be used for special separation. However, polymer membranes prepared by conventional method usually have wide pore size distribution and the pore size is hard to control. Here we prepared a porous polymer membrane with uniform pore size via spraying a blend of polystyrene (PS) and polyethylene oxide (PEO) on a filtration paper. Dissolving the water-soluble component (PEO) forms the pore and varying the ratios of PEO in the blend controls the pore size. The pore size and size distribution are also affected by processing parameters, such as the flow rate of solution and carrier gas, and gap length. The morphologies of the membrane are observed using scanning electron microscopy (SEM). The novel polymer membrane with controllable and uniform pore size will be used for the separation of solutes with predictable sizes.

• Periodical: Materials Science Forum (Volume 909)
• Pages: 157-162
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.909.157
• Online since: November 2017
• Authors: Wen Ting Sun, Shuang Xi Liu, Xiao Yu Hu*, Qiu Ying Jia, Ya Qin Shen, Lu Lu Liu
• Keywords: Polyethylene Oxide, Polystyrene, Pore Size, Porous Membrane, Spray

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