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Citation: Xian-hong Wang. Breaking Upper-bound Line of Water Permeability by Polyamide Nanofiltration Membrane with Turing Structures[J]. Acta Polymerica Sinica, ;2018, 0(6): 665-667. doi: 10.11777/j.issn1000-3304.2018.18119 shu

Breaking Upper-bound Line of Water Permeability by Polyamide Nanofiltration Membrane with Turing Structures

Xian-hong Wang ^,

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: Xian-hong Wang, xhwang@ciac.ac.cn
Received Date: 13 May 2018
Revised Date: 14 May 2018
Available Online: 17 May 2018

Turing structures are beautiful ordered patterns widely found in nature, not only in insects and animals, but also in various plants, and Alan Turing proposed reaction and diffusion mechanism in his paper titled as " The Chemical Basis of Morphogenesis”. How can polymer science be related to Turing structures? Recently Professor Zhang in Zhejiang University published a paper in Science clearly reporting the preparation of polyamide nanofiltration membrane with Turing structures. By introducing hydrophilic polyvinyl alcohol into the aqueous phase to reduce the diffusion rate of piperazine via hydrogen bonding and increase solution viscosity, the Turing’s reaction-diffusion condition can be realized, and manipulation of shapes by control of reaction conditions enabled the creation of membranes with bubble or tube structures. These membranes exhibit excellent water-salt separation performance that surpasses the upper-bound line of traditional desalination membranes. This highlight recommends the breakthrough in polyamide membrane with excellent desalination performance by Chinese scientists, and the profound influence on preparation of more advanced polymer materials via " reaction-diffusion system” is expected.
- Turing structures,
- Polyamide,
- Nanofiltration membrane,
- Reaction-diffusion theory
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