Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (05): 38-42.doi: 10.13475/j.fzxb.20211108105

• Invited Column: Expert Opinion of the 11th China Textile Academic Conferenc • Previous Articles     Next Articles

Preparation of binary thermochromic microcapsules and application in smart textiles

WANG Chengcheng1,2, GONG Xiaodan1,2, WANG Zhen1,2, MA Qunwang1,2, 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
  • Received:2021-11-18 Revised:2022-02-21 Online:2022-05-15 Published:2022-05-30
  • Contact: FU Shaohai E-mail:shaohaifu@hotmail.com

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Abstract:

Aiming at large temperature range and serious hysteresis of the temperature-response microcapsules, a fast response binary thermochromic complex was prepared by mixing fluorane dye with amide group and hexadecanol uniformly. The apparent morphology of the highly sensitive thermochromic microcapsules were studied by scanning electron microscope, transmission electron microscope and thermogravimetric analyzer. Color changing smart textiles were developed with strong temperature sensitivity, and the morphology characteristics of smart textiles and color performance were studied. The results show that the size of the prepared highly sensitive thermosensitive color-changing microcapsules is 1 μm, and the core material load was about 65%, with satisfactory thermal stability. The prepared smart textiles with high sensitivity and temperature change have bright color, and the color change range is 40-42 ℃. The color change lag of heating and cooling process is less than 1 ℃ and the color change sensitivity is high.

Key words: binary complex, thermochromic, microcapsule, smart textiles, fluorane dye

CLC Number: 

  • TS101.8

Fig.1

Red binary thermochromic compound pictures. (a) Heating process; (b) Cooling process"

Fig.2

SEM image (a) and TEM image (b) of high sensitivity thermochromic microcapsules"

Fig.3

Thermal performance analysis of high sensitivity thermochromic microcapsules. (a) TG curves; (b) DTG curves"

Fig.4

SEM images of cotton fabric(a)and high sensitivity thermochromic smart fabric(b)"

Fig.5

Reflectance curves of smart color-changing fabrics at different temperatures. (a) Red fabric; (b) Green fabric"

Fig.6

Smart textiles with high temperature sensitivity and color change"

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