Effect of chitosan coating on polypropylene fibers on the deposition of copper ions

Abstract

Composites based on chitosan coatings and metal ions are attracting great attention due to their antibacterial properties and biocompatibility. It is known that the presence of chitosan helps to stabilize the growth of metal films or individual nanoparticles during their deposition. In this work chitosan coating obtained from an aqueous carbonic acid solution is applied to fibers of a polypropylene nonwoven membrane. Aqueous carbonic acid solution is a clean and cheap solvent for chitosan that can effectively impregnate a porous polypropylene matrix. Before chitosan deposition, the fibers were pretreated in the presence of peroxycarbonic acid (i.e., in an aqueous hydrogen peroxide solution saturated with pressurized carbon dioxide). Copper ions were then deposited on the chitosan‐coated fibers. It was shown that the presence of a chitosan interlayer can significantly improve adhesion and reduce the aggregation of growing particles, which results in the decoration of the fibers with uniform thin copper‐containing films. The proposed method for creating composite materials can serve as a new approach to antibacterial polymer‐inorganic composites manufacturing.

Copper oxide nanoparticles fabricated by green chemistry using Tribulus terrestris seed natural extract-photocatalyst and green electrodes for energy storage device

“…For the production of copper oxide NPs, various techniques have been employed by different researchers for different purposes. These consist of wet electrodeposition 20 – 22 and chemical deposition 23 , 24 , chemical reduction techniques (hydrothermal) 19 – 22 , and others. These techniques require high pressure and temperature, and the majority employ hazardous chemicals that are harmful to people and the environment 25 , 26 .…”

A sandwich‐structure, low‐temperature sensitive and recyclable liquid metal organic hydrogel for a wearable strain sensor

“…Designing organic hydrogel sensors with fatigue resistance, high sensitivity, and fast response is even more challenging 10–12 . It is well known that chitosan quaternary ammonium salt is a natural polymer with good antibacterial, biocompatibility, environmental friendliness, and other excellent properties 13,14 . It has been widely concerned since it has made significant progress in many fields.…”

“…[10][11][12] It is well known that chitosan quaternary ammonium salt is a natural polymer with good antibacterial, biocompatibility, environmental friendliness, and other excellent properties. 13,14 It has been widely concerned since it has made significant progress in many fields. Yet, the traditional chitosan-based conductive hydrogel, which is not only low in response time but also adverse to the machine performance at low temperatures, brings extra difficulties in sensing application requirements.…”