Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (04): 26-32.doi: 10.13475/j.fzxb.20190404307

• Fiber Materials • Previous Articles     Next Articles

Study on oil absorbency of nature hollow metaplexis japonica seed hair fibers

WANG Dengfeng, WANG Zongqian(), FAN Xiangyu, SONG Bo, LI Yu   

  1. School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
  • Received:2019-04-15 Revised:2020-01-13 Online:2020-04-15 Published:2020-04-27
  • Contact: WANG Zongqian E-mail:wzqian@ahpu.edu.cn

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Abstract:

This research was carried out with the purpose of exploring the application of the metaplexis japonica seed hair fibers (Mj-fibers) in oil absorption and to realize high-value utilization of the fibers. Static contact angles of different liquids on the surface of fibers were measured by a contact angle-measuring instrument. The morphological characteristics of the fibers before and after oil absorption and the morphological changes after repeated oil absorption were observed and compared using the fiber imaging system. Static oil absorbency, oil retention performance and reusability of Mj-fibers to different oil agents were analyzed, and the fibers was involved as the filter layer making use of its separation function for oil/water mixture. The results show that Mj-fibers possess excellent lipophilic and hydrophobic properties, and the static contact angle of pure water on the surface of the fiber is measured to be 151.12°. Due to the oil absorption and oil storage between the fibers and in the hollowness of the fibres, the saturated oil absorption ratios for absorbing vegetable oil, lubricant oil and diesel are found to be 81.52, 77.62 and 57.22 g/g, respectively. The oil retention rates with these types of oil still reach 79.1%, 75.4% and 72.0% after 12 h gravity leaching. After 8 cycles, the oil absorption rate for these three types of oil demonstrated decrease by 23.4%, 22.2% and 20.7% respectively. In addition, After 4 times of filtration, the separation efficiency of the Mj-fibers for vegetable oil reaches 98.0%, ensuring initial oil/water separation.

Key words: metaplexis japonica seed hair fiber, oil absorption, oil/water separation, hollow structure, profiled fiber

CLC Number: 

  • TS102.2

Tab.1

Properties of experimental oils"

油剂
名称		 密度/
(g·cm-3)		 黏度/
(mPa·s)		 表面能/
(J·m-2)
植物油 0.92 62.81 33.48×10-3
机油 0.84 31.36 31.22×10-3
柴油 0.83 6.50 27.76×10-3

Fig.1

SEM images of metaplexis japonica seed hair fiber. (a) Single fibre velvet; (b) Longitudinal morphology(×1 000);(c) Cross-sectional morphology (×2 000)"

Fig.2

Surface wettability of metaplexis japonica seed hair fiber"

Fig.3

Static adsorption performance of metaplexis japonica seed hair fiber to different oil"

Fig.4

Oil retention of metaplexis japonica seed hair fiber to different oil"

Fig.5

Light micrographs of metaplexis japonica seed hair fiber at saturated oil absorption state(×80). (a)Oil storage in fiber gap; (b) Oil storage in fiber cavity"

Fig.6

Repeated oil absorbency of metaplexis japonica seed hair fiber to different oil"

Fig.7

Morphology of aggregates after repeated use of metaplexis japonica seed hair fiber(×40). (a) Repeat 0 time; (b) Repeat 2 times;(c) Repeat 4 times;(d)Repeat 6 times;(e) Repeat 8 times"

Fig.8

Oil-water separation diagram of metaplexis japonica seed hair fiber. (a) Process of oil-water separation;(b) Schematic diagram of oil-water separation; (c) Oil-water status after 4 separations"

Tab.2

Oil-water separation efficiency of metaplexis japonica seed hair fiber at different separation cycles"

油水分离循环次数 油相分离效率/%
1 85.2
2 93.0
3 97.8
4 98.0
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