Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (01): 79-83.doi: 10.13475/j.fzxb.20171205906

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Dyeing properties of polylactic acid fabric by carrier dyeing method

WU Qiqi1,2, LI Min1,2, LIU Yining3, WANG Lejun3, ZHANG Liping1,2, FU Shaohai1,2()   

  1. 1. Jiangsu Engineering Research Center for Digital Textile Inkjet Printing, Wuxi, Jiangsu 214122, China
    2. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
    3. Hengtian Fiber Group Co., Ltd., Beijing 100020, China
  • Received:2017-12-29 Revised:2018-08-25 Online:2019-01-15 Published:2019-01-18
  • Contact: FU Shaohai E-mail:shaohaifu@hotmail.com

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Abstract:

In order to solve the shallow coloration of polylactic acid(PLA) dyed fabrics under normal pressure and the damage of fabrics dyed under high temperature and pressure, the influence of dyeing factors such as carrier type and dosage and dyeing temperature on dyeing properties of PLA fabrics were investigated by carrier dyeing method. By analyzing the scanning electro microscopy and X-ray diffraction of the dyed fabric, the dyeing properties of disperse dyes on PLA fabrics under optimum conditions were studied. It is found that the apparent color depth value (K/S value) of PLA fabric can reach the same effect as high temperature and pressure dyeing (K/S value is 23.21) under the conditions of the carrier (90BHC, 0.25%), disperse red SE-3B (2% o.w.f) and temperature of 90 ℃ and holding for 40 min, while the burst strength loss of fabric is lower (decreased 2.7%). The fiber surface is not damaged, and the dyeing process has no effect on the crystal morphology of the fiber. The dyeing properties of disperse dyes on PLA fabrics were studied. The fiber-striping test shows that the PLA fabrics obtained by this dyeing method is better in dye penetration. The fastness to sunlight and color fastness to soaping shows that the fastness of disperse dyes on PLA fabrics is excellent.

Key words: polylactic acid fabric, disperse dye, carrier dyeing, burst strength, dyeing property

CLC Number: 

  • TS193.5

Fig.1

Process of carrier dyeing"

Fig.2

Process of high temperature and high pressure"

Fig.3

Process of normal temperature and normal pressure"

Tab.1

Influence of carrier type on K/S value"

载体种类 K/S值 载体种类 K/S值
1-烷基-2-吡咯烷酮 6.54 马来酰亚胺 8.92
N-羟基琥珀酰亚胺 7.54 乳酸乙酯 10.03
90BHC 23.52

Tab.2

Comparison of dyeing effects of different dyeing methods"

染色方法 K/S值 L* a* b* C* ΔE 顶破强力/N 强力下降率/%
载体染色法 23.21 37.36 56.68 14.34 58.87 0.14 961.1 2.7
高温高压染色 19.28 43.75 59.68 19.98 63.78 0.20 880.8 10.8

Fig.4

Influence of different factors on K/S value."

Tab.3

Comparison of properties of dyed fabrics by different dyeing methods"

染色方法 染料 K/S值 上染百分率/% 顶破强力/N 耐皂洗牢度/级 耐晒牢度/级
变色 沾色
载体染色 分散红SE-3B 23.27 50.1 960.02 5 5 5
常规染色 分散红SE-3B 4.34 12.6 961.31 5 5 4

Fig.5

SEM images of fibers before (a) and after (b)dyeing"

Fig.6

XRD patterns of fabric before and after dyeing"

Fig.7

Curve of dye uptake rate"

Fig.8

Lifting force curve of dye"

Fig.9

Fiber slice for carrier dyeing"

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