Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (09): 21-26.doi: 10.13475/j.fzxb.20191104506

• Fiber Materials • Previous Articles     Next Articles

Study on liquid absorption performance of water absorbing resin

WANG Fenglong, WANG Jianming(), ZHOU Yitian, ZHAO Minghui   

  1. School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2019-11-20 Revised:2020-06-06 Online:2020-09-15 Published:2020-09-25
  • Contact: WANG Jianming E-mail:wangjm1502@163.com

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Abstract:

In order to investigate the factors that affect the liquid absorption performance of water-absorbent resins, the structure of water absorbent resin was analyzed by means of scanning electron microscope and infrared spectrometer firstly. The time and temperature effects on the absorbency and water retention of water absorbent resin in water, simulated acid and alkali sweat were also explored. Analysis and discussions were carried out on the repeated absorbency of water absorbent resin. The results show that the surface of the absorbent resin has a large number of convex structures leading to a large specific surface area, increasing the liquid-absorption rate of the water-absorbent resin. The water-absorbent resin contains amide groups, and when submerged in deionized water and simulated sweat the maximum liquid absorption rates reach about 265, 50 and 50 g/g, respectively. The liquid absorption is influenced by the concentration of sodium ions in sweat, and the larger the concentration the worse the liquid absorption capacity. The acidity, alkalinity and temperature have little effect on the maximum absorption rate, but the temperature affects the water absorption rate in that the higher the temperature, the higher the liquid absorption rate, and the smaller the maximum liquid absorption rate. After 10 cycles of absorption loading, the liquid absorption rate of water-absorbent resin in the simulated sweat still reaches 87%.

Key words: water absorbing resin, liquid absorption performance, water retention, simulated sweat, personal protective clothing

CLC Number: 

  • TQ326.4

Tab.1

Simulated acid sweat, alkaline sweat formulag/L"

汗液名称 C6H9N3O2·HCl NaCl NaH2PO4·2H2O Na2HPO4·2H2O
模拟酸汗液 0.50 5.00 2.20 0.00
模拟碱汗液 0.50 5.00 0.00 2.50

Tab.2

Different concentrations of simulated acid sweat formulag/L"

汗液浓度 C6H9N3O2·HCl·H2O NaCl NaH2PO4·2H2O
1.0倍浓度 0.50 5.00 2.20
1.5倍浓度 0.75 7.50 3.30
2.0倍浓度 1.00 10.00 4.40
2.5倍浓度 1.25 12.50 5.50
3.0倍浓度 1.50 15.00 6.60

Tab.3

Different concentrations of simulated alkaline sweat formulag/L"

汗液浓度 C6H9N3O2·HCl·H2O NaCl Na2HPO4·2H2O
1.0倍浓度 0.50 5.00 2.50
1.5倍浓度 0.75 7.50 3.75
2.0倍浓度 1.00 10.00 5.00
2.5倍浓度 1.25 12.50 6.25
3.0倍浓度 1.50 15.00 7.50

Fig.1

Infrared spectrum of water absorbing resin"

Fig.2

SEM images of water absorbing resin before(a) and after(b) water absorption(×300)"

Fig.3

Effect of deionized water(a),simulated acid sweat(b) and simulated alkali sweat(c)at different temperature onabsorption rate"

Fig.4

Effects of simulated acid sweat(a)and simulated alkali sweat(b)of different mass concentrations on absorption rate"

Fig.5

Effect of sodium chloride concentration on liquid absorption rate"

Fig.6

Effects of simulated acid protein(a)and simulated basic protein(b)on aspiration rate"

Fig.7

Repeat water absorption of water absorbing resin"

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