Lattice Model Simulation of Penetrant Diffusion along Hexagonally Packed Rods in a Barrier Matrix As Determined by Pulse-Field-Gradient Nuclear Magnetic Resonance

2007 ◽  
Vol 40 (5) ◽  
pp. 1521-1528 ◽  
Author(s):  
Guoxing Lin ◽  
Darryl Aucoin ◽  
Marcus Giotto ◽  
Alana Canfield ◽  
Wen ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Lattice Model ◽  
Model Simulation ◽  
Pulse Field ◽  
Pulse Field Gradient ◽  
Penetrant Diffusion ◽  
Nuclear Magnetic

Penetrant Diffusion in Triblock Polymer by Pulse-Field-Gradient NMR and Lattice Model Simulation

2006 ◽  
Vol 984 ◽  
Author(s):  
Xueqian Kong ◽  
Tabitha Hargrove ◽  
Sara Ouellette ◽  
Marcus V. Giotto ◽  
Darryl Aucoin ◽  
...  
Keyword(s):  
Field Gradient ◽  
Lattice Model ◽  
Model Simulation ◽  
Morphological Characteristics ◽  
Pulse Field ◽  
Pulse Field Gradient ◽  
Triblock Polymer ◽  
Diffusion Phenomena ◽  
Penetrant Diffusion ◽  
Poly Ethylene

AbstractThe three versions of poly-styrene-ethylene/butylene-styrene (SEBS) triblock copolymers under investigation have different micro-scale morphologies: polystyrene (PS) spheres in poly-ethylene/butylene (EB) matrix, PS cylinders in EB matrix and EB cylinders in PS matrix. The diffusion phenomena of 2,2,4-trimethyl pentane (TMP) in SEBS probed with pulse field gradient NMR show distinct features related to the morphological characteristics. The micron scale size of grain boundaries may be obtained. In addition, the lattice model simulation was performed for the TMP diffusion in the membrane with spherical morphology.

scholarly journals In situ effective diffusion coefficient profiles in live biofilms using pulsed-field gradient nuclear magnetic resonance

2010 ◽  
Vol 106 (6) ◽  
pp. 928-937 ◽  
Author(s):  
Ryan S. Renslow ◽  
Paul D. Majors ◽  
Jeffrey S. McLean ◽  
Jim K. Fredrickson ◽  
Bulbul Ahmed ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Diffusion Coefficient ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Effective Diffusion Coefficient ◽  
Effective Diffusion ◽  
Pulsed Field ◽  
Nuclear Magnetic
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