Environmental pollution and health hazards from distillery wastewater and treatment approaches to combat the environmental threats: A review.

The expansion of environment-friendly materials based on natural sources increases dramatically in terms of biodegradable, recyclable, and environmental disputes throughout the world. Plant-based natural fiber, a high potential field of the reinforced polymer composite material, is considered as lightweight and economical products as they possess lower density, significant material characteristics, and extraordinary molding flexibility. The usage of plant fibers on the core structure of composite materials have drawn significant interest by the manufacturers to meet the increasing demand of the consumers for sustainable features with enhanced mechanical performances and functionalities. The plant fiber-based composites have widespread usage in construction, automotive, packaging, sports, biomedical, and defense sectors for their superior characteristics. Therefore, this critical review would demonstrate an overview regarding the background of natural fiber composites, factors influencing the composite properties, chemical interaction between the fiber and matrices, future potentiality, and marketing perspectives for triggering new research works in the field of biocomposite materials.

Comprehensive review on plant fiber-reinforced polymeric biocomposites

Bio-synthesized palladium nanoparticles using alginate for catalytic degradation of azo-dyes

This study presents the functionalization of organic cotton fabric (OCF) by green synthesized silver nanoparticles (AgNPs). Nontoxic sodium alginate (SA) was utilized as a reducing and stabilizing ...

Multifunctional organic cotton fabric based on silver nanoparticles green synthesized from sodium alginate

The coconut (Cocos nucifera) fruits are extensively grown in tropical countries. The use of coconut husk-derived coir fiber-reinforced biocomposites is on the rise nowadays due to the constantly increasing demand for sustainable, renewable, biodegradable, and recyclable materials. Generally, the coconut husk and shells are disposed of as waste materials; however, they can be utilized as prominent raw materials for environment-friendly biocomposite production. Coir fibers are strong and stiff, which are prerequisites for coir fiber-reinforced biocomposite materials. However, as a bio-based material, the produced biocomposites have various performance characteristics because of the inhomogeneous coir material characteristics. Coir materials are reinforced with different thermoplastic, thermosetting, and cement-based materials to produce biocomposites. Coir fiber-reinforced composites provide superior mechanical, thermal, and physical properties, which make them outstanding materials as compared to synthetic fiber-reinforced composites. However, the mechanical performances of coconut fiber-reinforced composites could be enhanced by pretreating the surfaces of coir fiber. This review provides an overview of coir fiber and the associated composites along with their feasible fabrication methods and surface treatments in terms of their morphological, thermal, mechanical, and physical properties. Furthermore, this study facilitates the industrial production of coir fiber-reinforced biocomposites through the efficient utilization of coir husk-generated fibers.

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A state-of-the-art review on coir fiber-reinforced biocomposites

This paper reports a novel route for the coloration of polyester fabric with green synthesized silver nanoparticles (G-AgNPs@PET) using chitosan as a natural eco-friendly reductant. The formation of AgNPs was confirmed by UV-visible spectroscopy. The morphologies and average particles size of G-AgNPs was investigated by transmission electron microscope (TEM) analysis. The uniform deposition of G-AgNPs on the PET fabric surface was confirmed with scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. The thermal properties were investigated using a thermogravimetric analyzer (TGA). The coloration and fastness properties of fabric were found to be significantly improved, a result related to the surface plasmon resonance of G-AgNPs. The antibacterial properties of fabric were also found to be excellent as more than 80% bacterial reduction was noticed even after 10 washing cycles. Overall, the proposed coating process using green nanoparticles can contribute to low-cost production of sustainable textiles.

https://www.mdpi.com/2079-4991/9/4/569/pdf

A Novel Coloration of Polyester Fabric through Green Silver Nanoparticles (G-AgNPs@PET).

Herein, an approach was carried out toward in situ synthesis of chitosan-mediated silver (Ag) nanoparticles (AgNPs) on merino wool fabrics (MWFs) and its utilization as colored textile, antibacteri

Wool functionalization through AgNPs: coloration, antibacterial and wastewater treatment

Coloration of aramid fabric via in-situ biosynthesis of silver nanoparticles with enhanced antibacterial effect

Herein, functionalization of nylon fabric surfaces in terms of excellent coloration and antibacterial properties were developed by in-situ synthesis of chitosan mediated silver nanoparticles (AgNPs). No toxic chemicals were used to ensure eco-friendly conditions. The variation of colors (nearly red, yellow, and blue) was achieved by only regulating precursor concentration and utilization of ascorbic acid. Functionalized nylon fabrics were then characterized by investigating surface morphology, elemental mapping, metal composition, and chemical linkage among compositing components. Results exposed that the particles are within the nano-range size, spherical in shapes, homogenously dispersed over the surfaces, and firmly attached to the nylon fiber by molecular force or double networking properties of chitosan. Color characteristics demonstrate a uniform shade due to the localized surface plasmon resonance (LSPR) properties of AgNPs with brilliant colorfastness and color strength (K/S). The antibacterial properties are found to be significant, with more than 88% bacterial reduction rate against both the gram-positive and gram-negative bacteria even after 20 washing cycles. Overall, this nylon functionalization protocol without using traditional chemicals like crosslinkers, binders, or coating agents provides the desired permanent efficiency and safe product.

Colorful and antibacterial nylon fabric via in-situ biosynthesis of chitosan mediated nanosilver

PurposeFunctionalization of organic cotton fabrics (OCFs) by in situ deposition of chitosan reduced-stabilized silver nanoparticles (AgNPs). No other toxic chemicals used to warrant an ecofriendly synthesis protocol. Human toxicity of silver systematically avoided to use as textile clothing. Primary colors (nearly-red, yellow and blue) were imparted on OCFs via localized surface plasmon resonance (LSPR) of AgNPs. Decent mechanical properties and laundering durability in terms of antibacterial/fastness test improved mechanical properties.Design/methodology/approachSilver nanoparticles can be synthesized by using silver nitrate along with commercially available chitosan. Due to the surface LSPR property of silver nanoparticles, it exhibits versatile colors depending on the synthesizing procedures. The coloration occurs due to the electrostatic interaction between the AgNPs and chitosan-treated OCF. The nanotreated fabrics provide excellent mechanical properties with improved antibacterial effects.FindingsX-ray fluorescence (XRF) analysis quantifies the developed materials in the substrates. Scanning electron microscopy (SEM) characterization indicates the appearance and morphologies of silver nanoparticles into the fabric surface after the coloration process. It proves that the treated cotton knit fabric exhibits the LSPR optical features of AgNPs. The antibacterial and mechanical properties confirm the improved functionality of products.Originality/valueImproved mechanical properties, antibacterial performances and coloration effects on organic cotton substrates in terms of chitosan-mediated nanosilver are not yet studied.

Cao Genyang

Papers

A Novel Coloration of Polyester Fabric through Green Silver Nanoparticles (G-AgNPs@PET).

Wool functionalization through AgNPs: coloration, antibacterial and wastewater treatment

Coloration of aramid fabric via in-situ biosynthesis of silver nanoparticles with enhanced antibacterial effect

Colorful and antibacterial nylon fabric via in-situ biosynthesis of chitosan mediated nanosilver

Enhancing mechanical and antibacterial performances of organic cotton materials with greenly synthesized colored silver nanoparticles