Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (04): 101-106.doi: 10.13475/j.fzxb.20200807106

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Optimization and mechanism of hydrogen peroxide/ammonium persulfate bleaching for yak wool

PAN Jiajun1, XIA Zhaopeng1,2, ZHANG Haibao3, LU Yang3, ZHAO Jilin3, WANG Xuenong3, WANG Liang1, LIU Yong1()   

  1. 1. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
    2. Shandong Institute for Product Quality Inspection, Ji'nan, Shandong 250102, China
    3. Qinghai Fiber Inspection Bureau, Xining, Qinghai 810001, China
  • Received:2020-08-17 Revised:2020-12-15 Online:2021-04-15 Published:2021-04-20
  • Contact: LIU Yong E-mail:liuyong@tiangong.edu.cn

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Abstract:

A novel decolorization process for yak wool with hydrogen peroxide/ammonium persulfate system was proposed to reduce the long decolorization time and shorten the commercial treatment process line. In order to improve fiber whiteness and minimize fiber damage, the effect of the decolorization time, ammonium persulfate dosage and pH value on yak wool in this process were discussed and compared with the commercial decolored yak wool via single-factor tests. The results show that with the decolorization time being 180 min at room temperature, the dosage of ammonium persulfate 400 g/L and pH value 9, and the decolorizing time 1/8 of that of commercial process, the yak wool bleached using this scheme has almost the same quality as that bleached using the commercial process. The bleaching mechanism is analyzed and found that the sulfate radical and the hydroxyl radical in this process played the main and secondary roles, receptively. This bleaching process is easier, providing a new solution for the high value utilization of yak wool.

Key words: yak wool, bleaching process, bleaching mechanism, hydrogen peroxide/ammonium persulfate

CLC Number: 

  • TS192.5

Fig.1

Whiteness of yak wool at different pH values"

Tab.1

Fracture strength of yak wool at different pH values"

pH值 直径/μm 线密度/dtex 断裂强力/cN 断裂强度/
(cN·dtex-1)
8 17.24 3.08 6.45 2.09
9 17.94 3.34 6.23 1.87
10 18.55 3.57 4.73 1.32

Fig.2

Morphology of yak wool scales at different pH values. (a) Unbleached; (b) pH=8; (c) pH=9; (d) pH=10"

Fig.3

Whiteness of yak wool at different mass concentration of ammonium persulfate"

Tab.2

Fracture strength of yak wool at different mass concentration of ammonium persulfate"

过硫酸铵质量
浓度/(g·L-1)		 直径/μm 线密度/dtex 断裂强力/
cN		 断裂强度/
(cN·dtex-1)
300 17.47 3.17 6.28 1.98
350 18.09 3.39 6.46 1.91
400 18.85 3.69 6.84 1.85

Fig.4

Morphology of yak wool scales at different mass concentration of ammonium persulfate. (a) Unbleached; (b) 300 g/L; (c) 350 g/L; (d) 400 g/L"

Fig.5

Whiteness of yak wool at different decolorization time"

Tab.3

Fracture strength of yak wool at different decolorization time"

脱色时间/
min		 直径/μm 线密度/dtex 断裂强力/
cN		 断裂强度/
(cN·dtex-1)
180 18.15 3.42 6.82 1.99
210 17.77 3.28 6.48 1.97
240 18.06 3.38 6.06 1.79

Fig.6

Morphology of yak wool scales at different decolorization time. (a) Unbleached; (b) 180 min; (c) 210 min; (d) 240 min"

Fig.7

Whiteness of yak wool treated with different bleaching reagent"

Tab.4

Comparison of parameters between this process and commercial decolorized yak wool"

脱色工艺 白度/% 断裂强度/
(cN·dtex-1)		 脱色时间/h
本文脱色工艺 73.45 1.87 3
商业化脱色工艺 78.89 1.82 24

Fig.8

Morphology of yak wool scales decolorized by commercial decolorization proces (a) and process of thispaper (b)"

[1] 王亚中, 芦玉花. 牦牛绒(毛)的纤维特征和性能分析[J]. 毛纺科技, 2002,30(1):18-20.
WANG Yazhong, LU Yuhua. Fiber characteristics and properties of yak wool[J]. Wool Textile Journal, 2002,30(1):18-20.
[2] 潘恒. 黑色人发纤维漂白技术及其机制研究[D]. 武汉:武汉纺织大学, 2018: 6-7.
PAN Heng. Human hair bleaching technology and its mechanism research[D]. Wuhan:Wuhan Textile University, 2018: 6-7.
[3] XIA L, ZHANG C, XU W, et al. Protective bleaching of camel hair in a neutral ethanol-water system[J]. Polymers, 2018,10(7):730.
[4] 刘婵, 谢春萍, 刘新金, 等. 亚铁离子质量浓度对黑牦牛绒纤维脱色的影响[J]. 纺织学报, 2016,37(4):21-26.
LIU Chan, XIE Chunping, LIU Xinjin, et al. Influence of different ferrous sulfate concentrations on bleaching of black yak fiber[J]. Journal of Textile Research, 2016,37(4):21-26.
[5] 刘婵, 谢春萍, 刘新金, 等. 黑牦牛绒氧化脱色工艺优化及其可纺性[J]. 纺织学报, 2016,37(7):49-54.
LIU Chan, XIE Chunping, LIU Xinjin, et al. Optimum oxidation bleaching condition and spinnability of black yak wool[J]. Journal of Textile Research, 2016,37(7):49-54.
[6] 丁浩然. 活化过硫酸钠氧化法对挥发性有机物污染土壤修复效果研究[D]. 南京:南京农业大学, 2014: 9-12.
DING Haoran. Remediation of volatile organic compounds contaminated soil by activated persulfate[D]. Nanjing:Nanjing Agricultural University, 2014: 9-12.
[7] SMITH R A W, GARRETT B, NAQVI K R, et al. Mechanistic insights into the bleaching of melanin by alkaline hydrogen peroxide[J]. Free Radical Biology and Medicine, 2017,108:110-117.
doi: 10.1016/j.freeradbiomed.2017.03.014 pmid: 28323131
[8] 孙云飞. 人发漂白脱色工艺技术研究[D]. 淄博:山东理工大学, 2014: 30-31.
SUN Yunfei. Research on the decoloring process of the black human hair[D]. Zibo:Shandong University of Technology, 2014: 30-31.
[9] HOUSE D A. Kinetics and mechanism of oxidations by peroxydisulfate[J]. Chemical Reviews, 1962,62(3):185-203.
[10] KOLTHOFF I M, MILLER I K. The chemistry of persulfate: I: the kinetics and mechanism of the decomposition of the persulfate ion in aqueous medium[J]. Journal of the American Chemical Society, 1951,73(7):1-30.
[11] 王杰. 牦牛毛绒的氨基酸分析[J]. 西南民族学院学报(自然科学版), 1984(2):23-25.
WANG Jie. Amino acid analysis of yak wool[J]. Journal of Southwest Minzu University (Natural Science Edition), 1984(2):23-25.
[12] ROBBINS C R. Chemical & physical behavior of human hair[M]. Heidelberg: Springer, 2012: 3-40.
[13] PREM P, DUBE K J, MADISON S A, et al. New insights into the physicochemical effects of ammonia/peroxide bleaching of hair and sepia melanins[J]. Journal of Cosmetic Science, 2003,54(4):395.
pmid: 14528391
[14] LIU Z, GUO W, HAN X, et al. In situ remediation of ortho-nitrochlorobenzene in soil by dual oxid-ants (hydrogen peroxide/persulfate)[J]. Environmental Science and Pollution Research, 2016,23(19):19707-19712.
pmid: 27406223
[15] 张科杰. Fenton试剂处理酸性玫瑰红B染色废水的试验研究[D]. 天津:天津大学, 2004: 11-12.
ZHANG Kejie. Study on fenton reagent for treatment of acid rose Red B dyed wastewater[D]. Tianjin:Tianjin University, 2014: 11-12.
[16] 朱正江. 日光/Fe2+/过硫酸盐体系中酸性刚果红降解研究[D]. 大连:大连海事大学, 2012: 2-3.
ZHU Zhengjiang. The study of degradating acidic Congo red in sunlight/Fe2+/persulphate system[D]. Dalian:Dalian Maritime University, 2012: 2-3.
[1] . Infouence of different ferrous sulphate concentrations on blaching of yak fiber [J]. Journal of Textile Research, 2016, 37(4): 21-26.
[2] ZHANG Wei;YU Jian-yong;WU Li-li . DMD bleaching conditions of bamboo fiber [J]. JOURNAL OF TEXTILE RESEARCH, 2005, 26(1): 100-101.
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