Functionalization of hydrophobic nonwoven cotton fabric for oil and water repellency

Abstract

Highly hydrophobic surfaces exhibit a remarkable feature in the repellency of oil and water. However, the relatively complex preparation process, high costs, and harmful compounds have largely limited their applications. This research aim is to fabricate hydrophobic nonwoven fabrics with low-cost and nontoxic materials. Despite various wettable materials, nonwoven cotton fabric material bearing hydrophobic surfaces has been received significant attention. This is mainly owing to its easy handling, high flexibility, environment friendly, low cost, biodegradability, high efficiency, and easily scalable fabrication. In this study, a simple chemical modification method using hexadecyltrimethoxysilane (HDTMS) with ethanol which is a better method in comparison with other methods since it is an inexpensive, simple method, and offers an easy adjustment of chemical composition required for a surface to show hydrophobic behaviors. The wetting behavior of cotton samples was investigated by water contact angle measurement. The best result comes from 2 ml HDTMS with 40 ml ethanol at 60 °C. The result shows that the treated cotton fabrics exhibited excellent chemical stability and outstanding non-wettability with the WCA of 126 ± 2°. It also shows that standard oil and water repellency, which offers an opportunity to accelerate the large-scale production of hydrophobic textile materials for new industrial applications. Graphic abstract

Fabrication of hydrophobic PLA filaments for additive manufacturing

“…Furthermore, it may also be caused by the presence of HDTMS. This molecule contains a long-chain structure [ 64 ]. As a result, the silicon atoms present could create covalent bonds with the carbon atoms in PLA on the 2 g PLA + 0.2 ml HDTMS + 1 ml PTFE filament to form long chains above the surface, thereby inhibiting the formation of HF bonds between PLA and PTFE and in turn increasing hydrophobicity [ 65 ].…”

Synthesis of a water-based TEOS–PDMS sol–gel coating for hydrophobic cotton and polyester fabrics

“…The slight increase in WCA may be due to more -OH groups in the coating being exposed as the temperature increases, leading to increased cross-linking reactions between the coating and the fabric, thereby enhancing the hydrophobicity of the coated fabric. 61 However, as the temperature rose to 150 1C and 180 1C, a slight decline in the water contact angles was observed for both coated cotton and polyester. This decrease suggests a minor reduction in hydrophobicity, which may be attributed to the effect of temperature increment on the coating's surface morphology or chemical structure.…”

Implementation of the Six Sigma Methodology for Reducing Fabric Defects on the Knitting Production Floor: A Sustainable Approach for Knitting Industry

“…The demand from developed countries has increased significantly, resulting in higher output and employment, increased growth in the agricultural sector, and an Dhaka, 1000, People's Republic of Bangladesh Shanghai 201620, People's Republic of China Bashundhara R/A, Dhaka-1212, People's Republic of Bangladesh https://doi.org/10.31881/TLR.2022.29 increase in the amount of foreign currency generated for developing economies [1]. Textile industries are the contributions of different part-by-part industries [2]. The fabric manufacturing industries are divided into two main categories [3].…”