Mechanically robust hydrophobized double network hydrogels and their fundamental salt transport properties

2021 ◽  
Author(s):  
Marshall J. Allen ◽  
Rahul Sujanani ◽  
Alyssa Chamseddine ◽  
Benny D. Freeman ◽  
Zachariah A. Page
Keyword(s):  
Transport Properties ◽  
Salt Transport ◽  
Double Network

Water and salt transport properties of zwitterionic polymers film

2015 ◽  
Vol 491 ◽  
pp. 73-81 ◽  
Author(s):  
Lei Ni ◽  
Jianqiang Meng ◽  
Geoffery M. Geise ◽  
Yufeng Zhang ◽  
Jin Zhou
Keyword(s):  
Transport Properties ◽  
Salt Transport ◽  
Zwitterionic Polymers

scholarly journals Mechanically Robust Hydrophobized Double Network Hydrogels for Water Purification

2021 ◽  
Author(s):  
Marshall Allen ◽  
Rahul Sujanani ◽  
Alyssa Chamseddine ◽  
Benny Freeman ◽  
Zachariah Page
Keyword(s):  
Water Content ◽  
Water Purification ◽  
Mechanical Performance ◽  
Polymer Networks ◽  
Ethyl Acrylate ◽  
Salt Transport ◽  
Content Increase ◽  
Free Standing ◽  
Double Network ◽  
Support Materials

Water swollen polymer networks are attractive for applications ranging from tissue regeneration to water purification. For water purification, charged polymers provide excellent ion separation properties. However, many ion exchange membranes (IEMs) are brittle, necessitating the use of thick support materials that ultimately decrease throughput. To this end, a series of double network hydrogels (DNHs), synthesized with varied composition to decrease water content, are examined as robust membrane materials for water purification. One network contains fixed anionic charges, while the other comprises a copolymer with different ratios of hydrophobic ethyl acrylate (EA) and hydrophilic dimethyl acrylamide (DMA) repeat units. Characterizing water content and mechanical performance in free standing DNH films reveals a ~5× decrease in water content, while increasing ultimate stress and strain by ~3.5× and ~4.5× for 90:5 EA:DMA relative to pure DMA. Salt transport properties relevant to water purification, including permeability, solubility, and diffusivity, are measured and show improved performance upon reducing water content. Overall, the ability to simultaneously reduce water content, increase mechanical integrity, and decrease salt transport rates highlights the potential of DNHs for membrane applications.

Water/salt transport properties of organic/inorganic hybrid films based on cellulose triacetate

2018 ◽  
Vol 563 ◽  
pp. 571-583 ◽  
Author(s):  
Meng You ◽  
Jian Yin ◽  
Rongbo Sun ◽  
Xingzhong Cao ◽  
Jianqiang Meng
Keyword(s):  
Transport Properties ◽  
Cellulose Triacetate ◽  
Salt Transport ◽  
Hybrid Films ◽  
Inorganic Hybrid ◽  
Water Salt

Influence of processing history on water and salt transport properties of disulfonated polysulfone random copolymers

Polymer ◽  
2012 ◽  
Vol 53 (7) ◽  
pp. 1581-1592 ◽  
Author(s):  
Wei Xie ◽  
Geoffrey M. Geise ◽  
Benny D. Freeman ◽  
Chang Hyun Lee ◽  
James E. McGrath
Keyword(s):  
Transport Properties ◽  
Salt Transport ◽  
Random Copolymers ◽  
Processing History
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