Fabrication and characterization of cow dung- Polyvinyl Alcohol composite film

In Situ Self-Assembly of Ultrastable Gold Nanoparticles on Polyvinyl Alcohol Nanofibrous Mats for Use as Highly Reusable Catalysts

“…11−32 Recently, environmentally benign polymer nanofibers have attracted considerable interest as Au NP stabilization carriers because of their high porosity, high surface area to volume ratios, and degradability in the environment. 30−33 Compared to other high surface area and high-porosity materials employed as Au NP stabilization carriers for catalytic applications, electrospun polymer nanofibers can provide a larger number of active sites, for example, −SH, −COOH, and −NH 3+ for stabilizing Au NPs and are much easier for fabrication. 34−40 This results in a great variety of interactions for immobilizing Au NPs on nanofiber surfaces to form polymer/Au NP composite nanofibers, which have been prepared via the in situ reduction of HAuCl 4 carried by polymer nanofibers.…”

“…Therefore, stabilization is essential to immobilize Au NPs and prevent their aggregation in most applications, particularly in catalysis. Stabilization has been facilitated by the use of numerous carrier systems such as high surface area, high-porosity materials [e.g., zeolites and mesoporous silica (SBA)], two-dimensional nanomaterials (e.g., graphene oxide), and a variety of molecules (e.g., surfactants and dendrimers). − Recently, environmentally benign polymer nanofibers have attracted considerable interest as Au NP stabilization carriers because of their high porosity, high surface area to volume ratios, and degradability in the environment. − Compared to other high surface area and high-porosity materials employed as Au NP stabilization carriers for catalytic applications, electrospun polymer nanofibers can provide a larger number of active sites, for example, −SH, −COOH, and −NH 3+ for stabilizing Au NPs and are much easier for fabrication. − This results in a great variety of interactions for immobilizing Au NPs on nanofiber surfaces to form polymer/Au NP composite nanofibers, which have been prepared via the in situ reduction of HAuCl 4 carried by polymer nanofibers. For example, Fang et al demonstrated the immobilization of Au NPs on the surfaces of water-stable composite polyvinyl acetate and polyethyleneimine nanofibrous mats .…”

Preparation and characterization of poly(vinyl alcohol)/gum tragacanth/cellulose nanocomposite film

“…Polyvinyl alcohol (PVA) is a commonly used water‐soluble synthetic polymer, which has high biocompatibility, and its safety is approved by the Food and Drug Administration (FDA) and European Food Safety Authority (EFSA) 3,4 . It is obtained by hydrolysis of polyvinyl acetate and used for its low‐toxicity, biodegradability, transparency, good emulsifying and adherence, as well as its good film‐forming ability in a wide range of industries 5,6 . The ability to form hydrogen bonds due to a large number of hydroxyl groups in its structure and excellent physical properties have made this polymer repeatedly used in combination with other polymers, such as, chitosan, gelatin, and starch 7–9 …”

Influence of kaolin filler on the mechanical properties of Luffa cylindrica/ polyester composite

“…The demand for polymer composites reinforced or lled with natural bers and powders for various industrial applications (construction, automobiles, furniture, and sporting goods) is growing because they retain good environmental performance, low cost, and easy of production compared to traditional materials [1][2][3]. Low price, low weight and minimized impact on environmental pollution are the key reasons for the rapid development of polymer composite materials.…”