Journal of Textile Research ›› 2024, Vol. 45 ›› Issue (04): 111-119.doi: 10.13475/j.fzxb.20230405701

• Dyeing and Finshing Engineering • Previous Articles     Next Articles

Preparation of cotton fabrics with both double-sided structural colored effect and high hydrophobicity by one-step method

XIANG Jiaojiao1, LIU Hao1, OUYANG Shenshen2, MA Wanbin1, CHAI Liqin1, ZHOU Lan1,3, SHAO Jianzhong1, LIU Guojin1,3,4()   

  1. 1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315000, China
    3. Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, Zhejiang 312000, China
    4. State Key Laboratory of Bio-Fibers and Eco-Textiles(Qingdao University), Qingdao, Shandong 266071, China
  • Received:2023-04-28 Revised:2024-01-13 Online:2024-04-15 Published:2024-05-13

Abstract:

Objective Cotton fabrics are widely used in the textile industry due to their excellent moisture absorption and breathability. However, the hydrophilic properties of cotton fabrics may limit their application in some hydrophobic and anti-fouling clothing. The coloring and hydrophobic effects of cotton fabrics can be achieved by a one-step method, which uses hydrophobic colloidal microspheres as the basic unit of photonic crystals to construct photonic crystals with both structural colored effect and high hydrophobicity on cotton fabric. This approach not only helps to reduce the processing process, but also generates new ideas for the development of multifunctional integrated cotton fabrics.

Method In this work, hydrophobic poly(trifluoroethyl methacrylate)(PTFEMA)colloidal microspheres were prepared by soap-free emulsion polymerization method. The microspheres were used as the building blocks of photonic crystals. The cotton fabric with double-sided structural colored effect and high hydrophobicity was obtained by a one-step method of dipping and baking.

Results The size distribution of PTFEMA colloidal microspheres synthesized by soap-free emulsion polymerization was found uniform, the particle dispersion index (PDI) was less than 0.08, the colloidal microspheres had hydrophobic functional group-CF3, and the water contact angle can reach 98.65°. When the mass fraction of PTFEMA colloidal microsphere assembly solution was 20%-30%, the cotton fabrics with obvious color and strong hydrophobicity were able to be prepared via one step method of dipping and baking. The photonic crystal structural colored cotton fabrics showed iridescent effect, and the water contact angle reached about 140°. The results showed that the high hydrophobicity of cotton fabrics with photonic crystal structural coloration was mainly caused by two aspects, i.e., the fluorine-containing group-CF3 carried by the PTFEMA microsphere, and the roughness of the cotton fabrics increased by the photonic crystal structural layer constructed by the PTFEMA microsphere.

Conclusion Photonic crystals composed of PTFEMA colloidal microspheres with excellent monodispersion were constructed by the one-step method of dipping and baking, facilitating the color enhancement and high hydrophobicity of double-sided structure of cotton fabrics. The effect of mass fraction of PTFEMA microsphere assembly solution on the structure color and hydrophobicity of cotton fabric was studied, and the results show that 20%-30% microsphere assembly solution is suitable for forming cotton fabric with obvious structural color and high hydrophobicity. In addition, the hydrophobic mechanism of cotton fabric with photonic crystal structural coloration is discussed. It is found that the hydrophobic group-CF3 carried by the PTFEMA colloidal microspheres, and the photonic crystal array constructed by the microspheres increase the roughness of the cotton fabric, which results in the high hydrophobicity of the structure. Therefore, the combination of the one-step method of dipping and baking, cotton fabric and photonic crystal structure can achieve the structure color of cotton fabrics and provides strategic support for the preparation of highly hydrophobic cotton fabric.

Key words: cotton fabric, photonic crystal, structural coloration, high hydrophobicity, one step method, functional textile

CLC Number: 

  • TS101

Fig.1

Schematic diagram of synthesis of monodisperse PTFEMA colloidal microspheres"

Fig.2

Schematic diagram for preparation of cotton fabrics with both double-sided structural color effect and high hydrophobicity"

Fig.3

Schematic diagram of multi-angle spectrophotometer at 45°(a) and 15°(b) illumination"

Fig.4

Particle size distribution of 5 PTFEMA colloidal microspheres"

Tab.1

Monodispersion index of 5 PTFEMA colloidal microspheres"

粒径/nm PDI值
361.3 0.015
310.7 0.049
267.2 0.065
229.8 0.027
197.6 0.021

Fig.5

FESEM images of PTFEMA colloidal microspheres"

Fig.6

FT-IR spectra(a) and water contact angle testing diagram(b) of PTFEMA colloidal microspheres"

Fig.7

Digital photos of structural colored cotton fabrics prepared with assembly solutions of different mass fractions"

Fig.8

Reflectance curves of structural colored cotton fabrics at different mass fraction assembly solution"

Fig.9

Iris effect image(a) and reflectance contour image(b) of structural colored cotton fabrics"

Fig.10

Water contact angle testing diagrams of structural colored cotton fabrics prepared in different mass fraction assembly solutions"

Fig.11

Digital photos(a) and water contact angle testing diagrams(b)of structural colored cotton fabrics prepared with 20% assembly solution"

Fig.12

Digital photos and corresponding water contact angle testing diagrams of photonic crystal structural color cotton fabrics under different particle size"

Fig.13

Element distribution of F elements on surface of raw cotton fabrics(a) and structural colored cotton fabrics(b)"

Fig.14

FESEM images of photonic crystal structure for raw cotton fabric and structural colored cotton fabric. (a) FESEM image of raw cotton fabrics;(b) FESEM image of structural colored cotton fabrics; (c) High magnification FESEM image of (b); (d) High magnification FESEM image of (c)"

Fig.15

AFM image of photonic crystals on structural colored cotton fabrics"

Fig.16

Schematic diagram of mechanism for structural colored cotton fabrics with high hydrophobicity"

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