Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (09): 129-136.doi: 10.13475/j.fzxb.20210700308

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of nanoscale capsulated disperse dyes and their washing-free dyeing performance

FU Zheng1,2, LI Min1,2, HE Yingting1,2, WANG Chunxia2, FU Shaohai1,2,3()   

  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. National Engineering Research Center for Dyeing and Finishing of Textiles, Taian, Shandong 271001, China
  • Received:2021-07-01 Revised:2022-06-20 Online:2022-09-15 Published:2022-09-26
  • Contact: FU Shaohai E-mail:shaohaifu@hotmail.com

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Abstract:

To achieve the washing-free dyeing of disperse dyes, methyl methacrylate(MMA) and butyl acrylate(BA) were initiated by polymerizing 2,2'-azobis (2-methylpropionamidine) dihydrochlo-ride(AIBA) on the surface of C.I. Disperse Violet 93 dye particles to form P (MMA-co-BA) shell in order to prepare nanoscale capsulated disperse dyes. The effects of reaction time, reaction temperature, initiator dosage, and core-shell ratio on the coating process were investigated. The optimal reaction conditions were identified as temperature 70 ℃, reaction time 3 h, initiator to monomer mass fraction 3%. The study results show that the Zeta potential of nanoscale capsulated disperse dyes is -61.1 mV, demonstrating significant thermal stability improvement. When applied to avoid water dyeing polyester and polyester/cotton fabric, the color fastness of the fabric dyed with the nanoscale capsulated disperse dye is improved by 1 to 2 grades without causing any obvious disturbance to the dyeing process. The breaking strength of such dyed fabric increased about 10%, and the chemical oxygen demand value of the soap-washing residual solution is reduced by more than 30%.

Key words: disperse dyes, polyester, thermosol dyeing, washing-free dyeing, dyeing performance, chemical oxygen demand value

CLC Number: 

  • TS193.5

Fig.1

Preparation process of nanoscale capsulated disperse dyes"

Fig.2

Effects of core-shell ratio (a), reaction time (b), reaction temperature (c) and fraction of initiator mass relative to monomer mass (d) on particle size distribution of nanoscale capsulated disperse dyes"

Fig.3

TEM images of C.I. Disperse Violet 93(a) and nanoscale capsulated disperse dyes with 1∶1(b), 1∶2 (c) and 1∶3(d) core-shell ratio"

Fig.4

Thermal properties of C.I. Disperse Violet 93, P(MMA-co-BA) and nanoscale capsulated disperse dyes. (a)TG curves;(b)DTG curves;(c)DSC curves"

Fig.5

Zeta potential curves"

Tab.1

Rate of particle size test results"

样品名称 粒径变化率/%
C.I.分散紫93分散体 31.8
核壳比为1∶1 2.1
核壳比为1∶2 0.6
核壳比为1∶3 1.5

Tab.2

Properties of washing-free dyeing fabrics and thermosol dyeing fabrics without washing"

织物种类 染色方法 ΔE K/S值 耐摩擦色牢度/级 耐水洗色牢度/级 断裂强
力/N		 皂洗残液COD
值/(mg·L-1)		 柔软度
干 湿 沾色 变色 空气湿度为90% 空气湿度为55%
涤纶织物 未染色 — — — — — — 1 490 — 78.08 73.93
传统热熔染色 0.49 16.2 2~3 3 3 4 1 469 2 856 73.74 67.38
免水洗染色 0.90 16.0 3~4 4 4 4 1 784 1 976 73.65 58.11
涤/棉织物 未染色 — — — — — — 1 037 — 79.32 74.52
传统热熔染色 1.10 8.8 2~3 1~2 2~3 2 961 2 288 75.35 69.75
免水洗染色 1.05 8.1 4~5 4 3 4~5 1 175 1 455 74.31 65.25

Fig.6

SEM images of surface and cross section of polyester fiber. (a) Polyester fiber before dyeing; (b) Polyester fiber after thermosol dyeing; (c) Polyester fiber after washing-free dyeing"

Fig.7

Microscope photographs of polyester fiber. (a) Polyester fiber before dyeing; (b) Polyester fiber after thermosol dyeing; (c) Polyester fiber after washing-free dyeing"

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