Research Papers

Investigation of Oil Adsorption Performance of Polypropylene Nanofiber Nonwoven Fabric

[+] Author and Article Information
Wei Wu

Organization for Research Initiatives
and Development,
Doshisha University,
1-3, Tataramiyakodani,
Kyotanabe City 610-0321, Kyoto, Japan
e-mail: weiwu@mail.doshisha.ac.jp

Toshiki Hirogaki

Department of Mechanical and
System Engineering,
Faculty of Science and Engineering,
Doshisha University,
1-3 Miyakodani Tatara,
Kyotanabe City 610-0321, Kyoto, Japan
e-mail: thirogak@mail.doshisha.ac.jp

Eiichi Aoyama

Department of Mechanical and
System Engineering,
Faculty of Science and Engineering,
Doshisha University,
1-3 Miyakodani Tatara,
Kyotanabe City 610-0321, Kyoto, Japan
e-mail: eaoayama@mail.doshisha.ac.jp

Morihiko Ikegaya

Technology Development Division of M-TechX Inc.,
3-8-10, Ueno, Iwatsukiku,
Saitama-shi, Saitama 339-0073, Japan
e-mail: ikegaya@mtechx.co.jp

Hiroyoshi Sota

M-TechX Inc.,
3-8-10, Ueno, Iwatsukiku,
Saitama-shi, Saitama 339-0073, Japan
e-mail: sota@mtechx.co.jp

1Corresponding author.

Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received June 28, 2017; final manuscript received October 11, 2018; published online December 10, 2018. Assoc. Editor: Erdogan Madenci.

J. Eng. Mater. Technol 141(2), 021004 (Dec 10, 2018) (8 pages) Paper No: MATS-17-1183; doi: 10.1115/1.4041853 History: Received June 28, 2017; Revised October 11, 2018

Nanofibers can be used in fields/applications such as medical care, environment protection, apparel, and agriculture. In addition, we believe that this field would continue to show substantial growth in the future. In this study, we focused on its application to oil adsorption. Oil adsorbing performances achieved polymeric nanofiber mass production by a melt-blowing method. We first tested the oil adsorption performance of fiber experimentally under different bulk densities and thicknesses. We also conducted the suction experiment with different bulk densities. Based on experimental result, we considered contact angle, capillarity, and surface tension to be the causes of oil adsorption. We also proposed a three-direction physical model for oil adsorption and used it to calculate the theoretical oil adsorption rate by different free volumes. As a result, we confirmed that the proposed three-direction model could accurately estimate the oil adsorption rate. Moreover, nanofiber has exceptional oil adsorption performance. Further, the fiber with average diameter of 1500 nm exceeds 60 times its self-weight. Therefore, we believe that the proposed nanofiber nonwoven fabric oil adsorption pad could adequately be used as oil adsorption material.

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Fig. 1

Trial-produced nanofiber

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Fig. 2

Test piece production and bulk density

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Fig. 3

Experimental method

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Fig. 4

Suction experiment

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Fig. 5

Influence of fiber diameter on oil adsorption capacity

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Fig. 6

Influence of bulk density on oil adsorption capacity

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Fig. 7

Influence of thickness on oil adsorption capacity

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Fig. 8

Oil adsorption experiment for different thicknesses of test pieces

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Fig. 9

Three-direction fiber aggregate model

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Fig. 10

Model of suction and oil adsorption

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Fig. 11

Influence of free volume on minimum e1 − 3d

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Fig. 12

Influence of bulk density on suction speed

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Fig. 13

Results of suction height

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Fig. 14

Example of oil adsorption experiment

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Fig. 15

Oil adsorption model of fiber aggregate

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Fig. 16

Volume expansion after adsorption

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Fig. 17

Influence of V/Vn on M/m

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Fig. 18

Comparison of calculated and experiment value on M/m



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