One-pot fabrication of superhydrophobic and flame-retardant coatings on cotton fabrics via sol-gel reaction

Journal of Colloid and Interface Science
Dongmei LinTongyi Wu

Abstract

Waterproof and flame-retardant fabrics are widely utilized in many fields, such as automotive interiors, indoor decorations, outdoor clothing and tents. Herein, a facile one-pot sol-gel approach was developed to construct superhydrophobic and flame-retardant (SFR) coatings on cotton fabrics. The cotton fabric was activated by O2 plasma and then immersed into the ethanol suspension containing tetraethoxysilane (TEOS), hydroxyl-terminated polydimethylsiloxane (HPDMS) and ammonium polyphosphate (APP). The hydrogen bonding interaction between APP and cellulose motivated the APP to attach to the cotton fibers during the initial stirring process. After the addition of ammonia, the in situ sol-gel reaction of TEOS and HPDMS was initiated to generate polydimethylsiloxane-silica hybrid (PDMS-silica). The micro-nano structured composite coating on cotton fabric was successfully fabricated by the PDMS-silica and APP. The SFR cotton fabric showed outstanding durability and self-cleaning ability with a water contact angle (WCA) above 160°. When exposed to fire, the SFR cotton fabric quickly charred to extinguish the fire by generating a dense intumescent char layer under the physical barrier effect of PDMS-silica and the intumescent flame-r...Continue Reading

Citations

Dec 18, 2020·Frontiers in Chemistry·Usama ZulfiqarDavid J Lewis
Jan 24, 2021·Carbohydrate Polymers·Neeta KumariAshwini K Agrawal
Feb 17, 2021·Luminescence : the Journal of Biological and Chemical Luminescence·Hanan K AlzahraniNashwa M El-Metwaly
Jul 24, 2021·ACS Applied Materials & Interfaces·Longzhu ZhengXingrong Zeng
Jul 27, 2021·Luminescence : the Journal of Biological and Chemical Luminescence·Ahmed HameedNashwa El-Metwaly
Jan 1, 2021·ACS Applied Materials & Interfaces·Weiwei ZhengYuekun Lai
Sep 9, 2020·ACS Applied Materials & Interfaces·Rushikesh AmbekarChandra Sekhar Tiwary
Sep 16, 2020·ACS Applied Materials & Interfaces·Lizhang LvHeqing Fu

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