Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (09): 88-94.doi: 10.13475/j.fzxb.20190703607

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Development and application of color change chromatography with thermochromic microcapsules

WANG Liang1,2, MA Xiaoguang1,2(), LI Junjun1, YANG Zhou1   

  1. 1. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
    2. Key Laboratory of Advanced Textile Composites, Ministry of Education, Tianjin 300387, China
  • Received:2019-07-10 Revised:2020-05-07 Online:2020-09-15 Published:2020-09-25
  • Contact: MA Xiaoguang E-mail:xgma@tiangong.edu.cn

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Abstract:

In order to address the problems of narrow chromatographic range and limited color of thermosensitive materials, the thermosensitive microcapsules obtained by in-situ polymerization method were used as the basic template for research. They were compared with the prepared red and yellow microcapsules for color-matching experiments. Through the principle of subtractive color mixing, microcapsules of different colors will present another color, fulfilling the purpose of chromatographic expansion. Electron microscopy and infrared spectroscopy results showed that thermosensitive color-changing microcapsules using formaldehyde-melamine resin as the wall material and triarylmethane-based basic color-changing system as the core material were a success. The color difference, reflectance, and K/S values of the color-matched samples were tested, and the results showed that the color of the microcapsule hybrid system also changed significantly with the change of the external temperature, achieving a reversible change between different shades and expanding

Key words: thermochromic, microcapsule, color change interval, chromatographic expansion, color matching

CLC Number: 

  • TS190.8

Fig.1

Schematic diagram of base color changing system"

Fig.2

SEM image of color-changing microcapsules"

Fig.3

Microcapsule particle size distribution"

Fig.4

Infrared spectrum of color-changing microcapsules, core material and wall material"

Fig.5

Color reflectance curves of color matching between red microcapsules and color-changing microcapsules"

Tab.1

Color difference of color matching between red microcapsules and color-changing microcapsules"

红色与变色微
胶囊质量比		 ΔE ΔL Δa Δb ΔC ΔH
1:4 31.19 3.51 -18.14 -25.13 8.73 29.73
4:1 8.55 0.10 -5.48 -6.57 -1.97 8.32

Fig.6

K/S value curves of color matching between red microcapsules and color-changing microcapsules"

Fig.7

Color reflectance curves of color matching between yellow microcapsules and color-changing microcapsules"

Tab.2

Color difference of color matching between yellow microcapsules and color-changing microcapsules"

黄色与变色微
胶囊质量比		 ΔE ΔL Δa Δb ΔC ΔH
1:4 22.50 10.78 1.13 -19.72 9.34 17.40
4:1 24.36 22.34 4.61 -8.57 -9.72 0.46

Fig.8

K/S value curves of color matching between yellowmicrocapsules and color-changing microcapsules"

Fig.9

Reflectance curves of color-changing microcapsules to different fabrics"

Tab.3

Color difference of color-changing microcapsules to different fabrics"

基布颜色 ΔE ΔL Δa Δb ΔC ΔH
白色基布 54.32 -24.9 6.05 -47.90 48.27 0.25
深黄基布 33.81 -1.57 -7.82 -32.86 -2.21 33.70

Fig.10

K/S value curves of color-changing microcapsules to different fabrics"

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