Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (03): 78-83.doi: 10.13475/j.fzxb.20190800606

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Influence of extreme hydrophobic dye structure on dyeing properties of ultrahigh molecular weight polyethylene fibers

WANG Xiaochun1(), ZHANG Jianfei1, ZHANG Liping2, WANG Nana2, YAN Jinlong2, ZHAO Guoliang2   

  1. 1. School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, China
    2. School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2019-08-02 Revised:2019-12-16 Online:2020-03-15 Published:2020-03-27

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Abstract:

In order to solve the dyeing problem of ultrahigh molecular weight polyethylene (UHMWPE) fibers, the dyes with extreme hydrophobicity and good planarity were selected. The influence of dye structure on dyeing properties of UHMWPE fibers was studied by the determination of the K/S value of dyed fibers and the thermodynamic parameters such as the affinity, the partition coefficient, enthalpy change and entropy change between dyes and fibers. The number and chain length of hydrophobic groups, the polar groups such as nitro group and solubility parameter of hydrophobic dyes were analyzed. The results show that extreme hydrophobic dyes have satisfactory color depth on UHMWPE fibers. The hydrophobicity and solubility parameter of dyes are important factors affecting the dyeing properties of UHMWPE fiber. Azo-structured dyes are easier to obtain better dyeing performance for UHMWPE fiber than anthraquinone-structured dyes.

Key words: ultrahigh molecular weight polyethylene fiber, extreme hydrophobic dye, dyeing thermodynamics, adsorption isotherm

CLC Number: 

  • TQ624

Fig.1

Dyeing process curve"

Tab.1

K/S value and color fastness to rubbing of UHMWPE fiber"

染料 K/S值 耐摩擦牢度/级
干 湿
乙基黄 11.6 4~5 4~5
苏丹蓝Ⅱ 4.0 3 3~4
油红O 13.7 3 3~4
分散红1 0.7 2~3 3
分散蓝291 0.9 2 2~3
分散橙25 0.4 2~3 2~3

Fig.2

Adsorption isotherm of UHMWPE fiber"

Fig.3

Structure of dyes. (a)Ethyl yellow; (b)Sudan yellowⅠ; (c)Sudan red G;(d)Sudan red Ⅲ; (e)Sudan red Ⅳ;(f)Sudan red B;(g)Oil Red O;(h)Anthraquinone blue;(i)Sudan blue Ⅱ;(j)Disperse orange 25"

Tab.2

Effect of dye structure on standard affinity"

序号 染料 K/S值 分配
系数K		 -Δμ0/
(kJ·mol-1)		 偶极矩/
D		 摩尔体积/
(cm3·mol-1)
1 乙基黄 11.6 5.35 -5.55 4.124 7 179.935
2 苏丹黄Ⅰ 4.8 9.56 -7.47 2.013 1 168.467
3 苏丹红G 3.4 6.22 -6.05 2.276 6 205.009
4 苏丹红Ⅲ 3.1 16.35 -9.25 2.498 9 278.365
5 苏丹红Ⅳ 5.3 17.73 -9.51 3.112 6 243.503
6 苏丹红B 10.2 29.26 -11.17 1.824 3 264.291
7 油红O 13.7 107.50 -15.48 2.920 2 290.521
8 蒽醌蓝 0.9 2.16 -2.55 3.039 7 184.899
9 苏丹蓝Ⅱ 4.0 22.46 -10.30 3.163 6 304.766
10 分散橙25 0.4 0.93 -0.25 8.523 5 260.539

Tab.3

Enthalpy and entropy changes of UHMWPE fiber"

染料 分配系数K -Δμ0/(kJ·mol-1) 染色热
ΔH0/(kJ·mol-1)		 染色熵ΔS0/(kJ·mol-1·K-1)
100 ℃ 125 ℃ 100 ℃ 125 ℃ 100 ℃ 125 ℃
乙基黄 3.55 5.35 -4.19 -5.55 -27.10 -0.09 -0.08
蒽醌蓝 0.62 2.16 -1.56 -2.55 -34.36 -0.10 -0.09
苏丹蓝Ⅱ 10.17 22.46 -7.68 -10.30 -87.61 -0.26 -0.25
苏丹红Ⅲ 9.32 16.35 -7.39 -9.25 -60.15 -0.19 -0.17
苏丹红Ⅳ 9.64 17.13 -7.50 -9.51 -65.57 -0.20 -0.19
苏丹红B 8.28 29.26 -6.99 -11.17 -144.64 -0.42 -0.39
油红O 28.24 107.50 -11.05 -15.48 -149.49 -0.44 -0.41

Tab.4

Solubility parameter and K/S value of dyes"

序号 染料 溶解度参数 K/S值
1 乙基黄 8.24 11.6
2 苏丹黄 8.57 4.8
3 苏丹红Ⅲ 8.43 3.1
4 苏丹红Ⅳ 8.52 5.3
5 苏丹红B 8.51 10.2
6 油红O 8.54 13.7
7 蒽醌蓝 9.94 0.9
8 苏丹蓝Ⅱ 9.43 4.0
9 分散红1 9.76 0.7
10 分散蓝291 10.89 0.9
11 分散橙25 9.88 0.4
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