Atomistic Simulations of Structure of Solvated Sulfonated Poly(ether ether ketone) Membranes and Their Comparisons to Nafion: II. Structure and Transport Properties of Water, Hydronium Ions, and Methanol

2010 ◽  
Vol 114 (25) ◽  
pp. 8367-8373 ◽  
Author(s):  
Chetan V. Mahajan ◽  
Venkat Ganesan
Keyword(s):  
Transport Properties ◽  
Atomistic Simulations ◽  
Hydronium Ions ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Sulfonated Poly

scholarly journals Effect of Sulfonation Degree and PVDF Content on the Structure and Transport Properties of SPEEK/PVDF Blend Membranes

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 676
Author(s):  
Shaojian He ◽  
Shaoxiong Zhai ◽  
Chong Zhang ◽  
Yang Xue ◽  
Wei Yang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Polyvinylidene Fluoride ◽  
Methanol Permeability ◽  
Miscible Blend ◽  
Ether Ether Ketone ◽  
Sulfonation Degree ◽  
Poly Ether Ether Ketone ◽  
Blend Membranes ◽  
Ether Ketone ◽  
Sulfonated Poly

Sulfonated poly (ether ether ketone) (SPEEK) with four different sulfonation degrees (SDs) were prepared, and mixed with polyvinylidene fluoride (PVDF) to prepare four series of SPEEK/PVDF blend membranes. The miscibility between SPEEK and PVDF was investigated by observing the micro-morphologies. The miscible blend membranes were found in the SPEEK/PVDF blend membranes in which either SPEEK had relatively low SD or consisted of low content of one component (either SPEEK or PVDF). The PVDF crystallinity was found to decrease in the SPEEK/PVDF membranes that had better blend miscibility. With the increase of PVDF content, all the blend membranes exhibited the decreased proton conductivity and methanol permeability, and the miscible blend membranes decreased more slowly than the immiscible ones.

Pre-treatment effect on the transport properties of sulfonated poly(ether ether ketone) membranes for DMFC applications

Desalination ◽  
2006 ◽  
Vol 200 (1-3) ◽  
pp. 645-647 ◽  
Author(s):  
Vasco Silva ◽  
Valter Silva ◽  
Adélio Mendes ◽  
Luis Madeira ◽  
Suzana Nunes
Keyword(s):  
Transport Properties ◽  
Treatment Effect ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Pre Treatment ◽  
Sulfonated Poly
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