The evolution of free volume and gas transport properties for the thermal rearrangement of poly(hydroxyamide-co-amide)s membranes

2019 ◽  
Vol 573 ◽  
pp. 21-35 ◽  
Author(s):  
Lu Ye ◽  
Lina Wang ◽  
Xingming Jie ◽  
Congyao Yu ◽  
Guodong Kang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Gas Transport ◽  
Thermal Rearrangement ◽  
Gas Transport Properties

Relationship between the gas transport properties and the refractive index in high-free-volume fluorine-containing polyimide membranes

2011 ◽  
Vol 121 (5) ◽  
pp. 2794-2803 ◽  
Author(s):  
Shuichi Sato ◽  
Takamasa Ose ◽  
Sou Miyata ◽  
Shinji Kanehashi ◽  
Hiroto Ito ◽  
...  
Keyword(s):  
Refractive Index ◽  
Transport Properties ◽  
Free Volume ◽  
Gas Transport ◽  
Gas Transport Properties ◽  
Polyimide Membranes

Preparation and gas transport properties of triptycene-containing polybenzoxazole (PBO)-based polymers derived from thermal rearrangement (TR) and thermal cyclodehydration (TC) processes

2016 ◽  
Vol 4 (43) ◽  
pp. 17050-17062 ◽  
Author(s):  
Shuangjiang Luo ◽  
Junyi Liu ◽  
Haiqing Lin ◽  
Barbara A. Kazanowska ◽  
Michael D. Hunckler ◽  
...  
Keyword(s):  
Transport Properties ◽  
Gas Transport ◽  
Thermal Rearrangement ◽  
Gas Transport Properties

Triptycene-containing PBO-based polymers with ultrafine microporosity promoting ultrafast and highly selective gas transport.

Gas transport properties of high free volume polyarylates based on isophthalic/terephthalic acid chloride mixtures

2007 ◽  
Vol 305 (1-2) ◽  
pp. 347-352 ◽  
Author(s):  
M.T. Guzmán-Gutierrez ◽  
F.A. Ruiz-Treviño ◽  
M. Zolutukhin ◽  
S. Hernández-López ◽  
U. Scherf
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Acid Chloride ◽  
Terephthalic Acid ◽  
Gas Transport ◽  
Gas Transport Properties

Synthesis and gas transport properties of novel poly(ether ether ketone)s containing fluorene group

2019 ◽  
Vol 31 (9-10) ◽  
pp. 1173-1182 ◽  
Author(s):  
Yayun Zheng ◽  
Xing Yang ◽  
Meng Yuan ◽  
Jujie Luo
Keyword(s):  
Transport Properties ◽  
Free Volume ◽  
Gas Transport ◽  
Gas Permeability ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Gas Transport Properties ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone

Two novel gas separation membranes (Phenyl(Ph)-poly(ether ether ketone)s (PEEKs) and PEEKs) based on PEEKs with a high fractional free volume were designed and synthesized. The structure and thermodynamic stability of the membranes were investigated using Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and thermogravimetric analysis. The two membranes, which were determined to be high-molecular weight polymers by gel permeation chromatography, showed good solubility in a weakly polar solvent. The gas transport properties of the Ph-PEEK membranes were investigated for different gases (CO2, O2, CH4, and N2) at 25°C and 1 atm. The Ph-PEEK-3 membrane with the largest free volume had the largest gas permeability coefficient and maintained good selectivity. The effect of operating temperature on the gas permeation of the Ph-PEEK-3 membrane was also investigated, and the maximum permeability of the four single gases was reached at 55°C and 1 atm.

The Effect of the Type and Concentration of the Crosslinking Diene on the Gas Transport Properties of Membranes Based on Polyoctylmethylsiloxane

2020 ◽  
Vol 2 (6) ◽  
pp. 399-406
Author(s):  
E. A. Grushevenko ◽  
I. L. Borisov ◽  
D. S. Bakhtin ◽  
V. V. Volkov ◽  
A. V. Volkov
Keyword(s):  
Transport Properties ◽  
Gas Transport ◽  
Gas Transport Properties
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