TY - JOUR
T1 - High-pressure hydrogen permeability model for crystalline polymers
AU - Kanesugi, Hiroyuki
AU - Ohyama, Keiko
AU - Fujiwara, Hirotada
AU - Nishimura, Shin
N1 - Funding Information:
The authors acknowledge many supports from the members of Hydrogen Polymers Division, Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University.
Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC
PY - 2023/1/5
Y1 - 2023/1/5
N2 - Molded seal devices made of crystalline polymers are widely used in high-pressure hydrogen equipment. A method for evaluating high-pressure hydrogen permeability was recently reported; however, the evaluation cost is extremely high. To select suitable crystalline polymers for molded hydrogen seals or barrier devices, a high-pressure hydrogen permeability prediction method using the polymer structure and its conventional properties is required. In this study, we measured the pressure dependency of the hydrogen permeability of low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polyamide 11 (PA11). We constructed the permeation model for crystalline polymers in terms of the tortuosity induced by their higher-order structures and free volume change in the amorphous region evaluated using PVT method for measuring the relationship between pressure (p), specific volume (v) and temperature (T) in the molten-solid state of a polymer. The results of the pressure dependency of hydrogen permeability were reproduced by the developed permeation model.
AB - Molded seal devices made of crystalline polymers are widely used in high-pressure hydrogen equipment. A method for evaluating high-pressure hydrogen permeability was recently reported; however, the evaluation cost is extremely high. To select suitable crystalline polymers for molded hydrogen seals or barrier devices, a high-pressure hydrogen permeability prediction method using the polymer structure and its conventional properties is required. In this study, we measured the pressure dependency of the hydrogen permeability of low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polyamide 11 (PA11). We constructed the permeation model for crystalline polymers in terms of the tortuosity induced by their higher-order structures and free volume change in the amorphous region evaluated using PVT method for measuring the relationship between pressure (p), specific volume (v) and temperature (T) in the molten-solid state of a polymer. The results of the pressure dependency of hydrogen permeability were reproduced by the developed permeation model.
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U2 - 10.1016/j.ijhydene.2022.09.205
DO - 10.1016/j.ijhydene.2022.09.205
M3 - Article
AN - SCOPUS:85140292883
SN - 0360-3199
VL - 48
SP - 723
EP - 739
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 2
ER -
