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Journal of Materials Science

, Volume 46, Issue 20, pp 6682–6689 | Cite as

Hydrophobic properties and color effects of hybrid silica spin-coatings on cellulose matrix

  • Yunjie Yin
  • Chaoxia WangEmail author
  • Chunxia Wang
  • Min Wu
  • Anli Tian
  • Shaohai Fu
Article

Abstract

A novel sol–gel derived organic–inorganic hybrid silica sol consisting of organic direct red dye 4BS and inorganic silica (SiO2) is successfully synthesized by adding coupling agent γ-chloropropyltriethoxysilane (CPTS). Hybrid silica coatings are deposited on cellulose matrix surface via spin-coating approach to introduce effective hydrophobic and color properties. Compared to the dye hybrid silica sol (DHSS), the particle size of CPTS/dye hybrid silica sol (CDHSS) increases from 64.51 to 129.70 nm, while the surface tension reduces from 34.27 × 10−3 N m−1 to 31.22 × 10−3 N m−1. The hydrostatic pressure of the cellulose matrix coating with CDHSS is 4530.5 Pa, the contact angle is 131.48°, and the wetting time is ~150 min, which attributes to the alkyl chloride aliphatic chain and sharp micro-surface roughness of the hybrid coatings validated directly by AFM and SEM images. The K/S value (5.15) of the cellulose matrix coated with CPTS/dye hybrid silica (CMCCDHS) is 12.44% higher than that of the cellulose matrix coated with dye hybrid silica (CMCDHS), and increased by 30.38% relative to the control coated sample. The maximum absorption wavelengths of the matrixes treated with different processes are the same as the maximum absorption wavelength of the silica sols (510 nm).

Keywords

Surface Tension Contact Angle Hydrostatic Pressure Water Drop Silica Coating 

Notes

Acknowledgements

This work is supported by the National Natural Science Foundation of China (20674031), the Business Doctoral Innovation Project of Jiangsu Province in China (BK2009672), the Graduate Students Innovation Project of Jiangsu Province in China (CX08S_016Z), the Fundamental Research Funds for the Central Universities (JUDCF09004) and the Excellent Doctoral Cultivation Project of Jiangnan University.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yunjie Yin
    • 1
  • Chaoxia Wang
    • 1
    Email author
  • Chunxia Wang
    • 1
  • Min Wu
    • 1
  • Anli Tian
    • 1
  • Shaohai Fu
    • 1
  1. 1.Key Laboratory of Eco-TextileMinistry of Education, Jiangnan UniversityWuxiChina

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