Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (01): 90-95.doi: 10.13475/j.fzxb.20200402907

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of reactive dye/polystyrene composite colloidal microspheres and their structural coloring on silk fabrics

LU Peng1, HONG Sisi1, LIN Xu2, LI Hui1, LIU Guojin3, ZHOU Lan1, SHAO Jianzhong1, CHAI Liqin1()   

  1. 1. Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Hangzhou Wensli Silk Science & Technology Co., Ltd., Hangzhou, Zhejiang 310021, China
    3. Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2020-04-10 Revised:2020-08-10 Online:2021-01-15 Published:2021-01-21
  • Contact: CHAI Liqin E-mail:chailiqin0101@163.com

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Abstract:

In order to improve the color saturation of structural chromogenic photonic crystals on textiles, black reactive dye was introduced onto the surface of positively charged polystyrene (PSt) colloidal microspheres through electrostatic adsorption, resulting in the formation of an external surface absorbable dye PSt structural element (reactive dye/PSt microspheres) for structural coloring. The adsorption process and the modeling of dyes on the surface of PSt colloidal microspheres were studied, the morphology of reactive dye/PSt microspheres was observed, and the arrangement and structural color effects of prepared photonic crystals were characterized. The research results led to the following findings: the adsorption capacity of dyes on PSt microspheres increases with the increase of time, temperature and dye dosage; the adsorption model conforms to Langmuir type; the reactive dye/PSt microspheres have typical core-shell structure, and the particle size of microspheres slightly increases compared with that before adsorption; and the prepared reactive dye/PSt photonic crystals on white silk fabrics present regular arrangement and bright structural colors.

Key words: reactive dye, polystyrene (PSt), colloidal microspheres, structural color, silk fabric

CLC Number: 

  • TS195.9

Fig.1

Dye adsorption capacities on surface of PSt colloidal microspheres with different dye dosages"

Fig.2

Zeta potential of PSt colloidal microspheres with different dye dosages"

Fig.3

Dye adsorption capacities on surface of PSt colloidal microspheres at different adsorption times"

Fig.4

Dye adsorption capacities on surface of PSt colloidal microspheres at different adsorption temperatures"

Fig.5

Adsorption isotherms of reactive dyes on surface of PSt microspheres at different temperatures and fitting diagrams of three models. (a) Adsorption isotherms; (b) Fitting diagrams at 25 ℃;(c) Fitting diagram at 45 ℃; (d) Fitting diagram at 65 ℃"

Tab.1

Simulation results of adsorption isotherms of reactive dyes on surface of PSt colloidal microspheres"

温度/
℃		 Nernst模型 Langmuir模型 Fredundilch模型
ND/% R2 ND/% R2 ND/% R2
25 36.2 0.853 4.1 0.990 17.0 0.943
45 40.6 0.832 2.3 0.994 17.5 0.943
65 27.1 0.904 1.1 0.997 13.8 0.968

Fig.6

Schematic diagram of adsorption of reactive dyes on surface of PSt colloidal microspheres"

Fig.7

TEM and FESEM images of microspheres before and after dye adsorption"

Fig.8

FESEM images and digital photos of photonic crystals printed with different particle sizes reactive dye/PSt microspheres with on white silk fabrics"

Fig.9

Reflectivity curves of photonic crystals printed with reactive dye/PSt microspheres with different particle sizes"

Fig.10

3-D microscope images of self-assembled photonic crystals on white silk fabrics before and after adsorption of reactive dyes by PSt microspheres. (a) Fabric 1; (b) Fabric 2"

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