期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 307, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.202100508
关键词
fumed silicon; hyperbranched polyesters; oil-water separation; superhydrophobic coating; thiol-ene click reactions
资金
- National Natural Science Foundation of China [21878108]
This study synthesizes specific materials and prepares superhydrophobic fabrics with high water contact angle and low sliding angle on the surface of cotton fabrics through cross-linking reactions, demonstrating excellent performance and sustainability.
In this paper, first, UV-curable vinyl-terminated hyperbranched polyester (VTDP) is synthetized via a two-step reaction. Then, mono-sulfhydryl terminated polydimethylsiloxane (PDMS-SH) is prepared via esterification reaction. Finally, cotton fabrics are immersed in mixtures of PDMS-SH, double-sulfhydryl terminated polydimethylsiloxane (HS-PDMS-SH), VTDP and hydrophobic fumed silica (HFS), and cross-linking polydimethylsiloxane with hydrophobic fumed silica (HCPDMS@HFS) fabrics are prepared by 35 s of UV irradiation. When the content of HFS is 2.0 wt%, the superhydrophobic HCPDMS@HFS fabrics with high water contact angle (158.5) as well as low sliding angle (6.8) are obtained. At the same time, HCPDMS@HFS fabrics can withstand sandpaper abrasion for 30 cycles and tape-peeling repetition for 100 times. They also exhibit excellent self-cleaning ability, chemical durability, thermal stability, and good recyclability.
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