Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations
Filler effects on H<sub>2</sub> diffusion in nitrile butadiene rubbers (NBRs) blended with carbon black and silica fillers of different concentrations are first investigated by employing a volumetric analysis. Total uptake, solubility, and diffusivity of hydrogen for ten filled-NBR, incl...
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MDPI AG
2022-02-01
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author | Jae Kap Jung Chang Hoon Lee Min Seok Son Ji Hun Lee Un Bong Baek Ki Soo Chung Myung Chan Choi Jong Woo Bae |
author_facet | Jae Kap Jung Chang Hoon Lee Min Seok Son Ji Hun Lee Un Bong Baek Ki Soo Chung Myung Chan Choi Jong Woo Bae |
author_sort | Jae Kap Jung |
collection | DOAJ |
description | Filler effects on H<sub>2</sub> diffusion in nitrile butadiene rubbers (NBRs) blended with carbon black and silica fillers of different concentrations are first investigated by employing a volumetric analysis. Total uptake, solubility, and diffusivity of hydrogen for ten filled-NBR, including neat NBR, are determined in an exposed pressure range of 1.3 MPa~92.6 MPa. Filler dependence on hydrogen uptake and diffusion is distinctly observed in the NBRs blended with high abrasion furnace (HAF) carbon black (CB) fillers compared to NBRs blended with medium thermal furnace (MT) CB and silica filler, which is related to the specific surface area of carbon black and interface structure. The HAF CB filled-NBR follows dual sorption behavior combined with Henry’s law and the Langmuir model, responsible for two contributions of solubility from polymer and filler. However, a single gas sorption behavior coming from the polymer is observed satisfying Henry’s law up to 92.6 MPa for NBR blended with MT CB filled-NBR and silica filled-NBR. Diffusion demonstrates Knudsen and bulk diffusion behavior below and above, respectively, at certain pressures. With increasing pressure, the filler effect on diffusion is reduced, and diffusivity converges to a value. The correlation observed between diffusivity and filler content (or crosslink density) is discussed. |
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spelling | doaj.art-7c7e9c450f034d6999a717eeb421e1562023-11-23T21:44:26ZengMDPI AGPolymers2073-43602022-02-0114470010.3390/polym14040700Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different ConcentrationsJae Kap Jung0Chang Hoon Lee1Min Seok Son2Ji Hun Lee3Un Bong Baek4Ki Soo Chung5Myung Chan Choi6Jong Woo Bae7Hydrogen Energy Materials Research Center, Korea Research Institute of Standards and Science, Daejeon 34113, KoreaDepartment of Biochemical and Polymer Engineering, Chosun University, Gwangju 61452, KoreaDepartment of Biochemical and Polymer Engineering, Chosun University, Gwangju 61452, KoreaHydrogen Energy Materials Research Center, Korea Research Institute of Standards and Science, Daejeon 34113, KoreaHydrogen Energy Materials Research Center, Korea Research Institute of Standards and Science, Daejeon 34113, KoreaDepartment of Physics and Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, KoreaRubber Research Division, Korea Institute of Footwear & Leather Technology, Busan 47154, KoreaRubber Research Division, Korea Institute of Footwear & Leather Technology, Busan 47154, KoreaFiller effects on H<sub>2</sub> diffusion in nitrile butadiene rubbers (NBRs) blended with carbon black and silica fillers of different concentrations are first investigated by employing a volumetric analysis. Total uptake, solubility, and diffusivity of hydrogen for ten filled-NBR, including neat NBR, are determined in an exposed pressure range of 1.3 MPa~92.6 MPa. Filler dependence on hydrogen uptake and diffusion is distinctly observed in the NBRs blended with high abrasion furnace (HAF) carbon black (CB) fillers compared to NBRs blended with medium thermal furnace (MT) CB and silica filler, which is related to the specific surface area of carbon black and interface structure. The HAF CB filled-NBR follows dual sorption behavior combined with Henry’s law and the Langmuir model, responsible for two contributions of solubility from polymer and filler. However, a single gas sorption behavior coming from the polymer is observed satisfying Henry’s law up to 92.6 MPa for NBR blended with MT CB filled-NBR and silica filled-NBR. Diffusion demonstrates Knudsen and bulk diffusion behavior below and above, respectively, at certain pressures. With increasing pressure, the filler effect on diffusion is reduced, and diffusivity converges to a value. The correlation observed between diffusivity and filler content (or crosslink density) is discussed.https://www.mdpi.com/2073-4360/14/4/700nitrile butadiene rubber (NBR)carbon black fillersilica fillervolumetric analysishydrogen uptakediffusion |
spellingShingle | Jae Kap Jung Chang Hoon Lee Min Seok Son Ji Hun Lee Un Bong Baek Ki Soo Chung Myung Chan Choi Jong Woo Bae Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations Polymers nitrile butadiene rubber (NBR) carbon black filler silica filler volumetric analysis hydrogen uptake diffusion |
title | Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations |
title_full | Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations |
title_fullStr | Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations |
title_full_unstemmed | Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations |
title_short | Filler Effects on H<sub>2</sub> Diffusion Behavior in Nitrile Butadiene Rubber Blended with Carbon Black and Silica Fillers of Different Concentrations |
title_sort | filler effects on h sub 2 sub diffusion behavior in nitrile butadiene rubber blended with carbon black and silica fillers of different concentrations |
topic | nitrile butadiene rubber (NBR) carbon black filler silica filler volumetric analysis hydrogen uptake diffusion |
url | https://www.mdpi.com/2073-4360/14/4/700 |
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