Silver-cotton nanocomposites: Nano-design of microfibrillar structure causes morphological changes and increased tenacity

Abstract

The interactions of nanoparticles with polymer hosts have important implications for directing the macroscopic properties of composite fibers, yet little is known about such interactions with hierarchically ordered natural polymers due to the difficulty of achieving uniform dispersion of nanoparticles within semi-crystalline natural fiber. In this study we have homogeneously dispersed silver nanoparticles throughout an entire volume of cotton fiber. The resulting electrostatic interaction and distinct supramolecular structure of the cotton fiber provided a favorable environment for the controlled formation of nanoparticles (12 ± 3 nm in diameter). With a high surface-to-volume ratio, the extensive interfacial contacts of the nanoparticles efficiently “glued” the structural elements of microfibrils together, producing a unique inorganic-organic hybrid substructure that reinforced the multilayered architecture of the cotton fiber.

Synthesis and Application of Silver Nanoparticles (Ag NPs) for the Prevention of Infection in Healthcare Workers

“…The range of microbicidal properties of Ag NPs is wider than that of antibiotics, and the appearance of resistant bacteria such as MRSA is rare in Ag NP-based materials [115]. The combination of various materials with Ag NP-based materials has been studied [116,117,118,119]. The production of wound dressings and medical catheters coated with Ag NPs has been investigated.…”

In situ microwave heating fabrication of copper nanoparticles inside cotton fiber using pressurization in immiscible liquids with raw material solutions

“…Earlier studies examining silver nanoparticles created inside cotton bers revealed nanoparticles of about 10 nm, which are of equal size to the microbrillar substructures. 12,13 In the MW fabrications described herein, it is presumed that larger copper particles were observed because the particles were present on the ber surface and on the inner surface of the ber hollow portion in addition to nanoparticles because of the microbrillar structure. Regarding the distribution control of the copper component in the ber cross-section, the elemental prole of Fig.…”

“…As one example of a functional material inside a cotton ber, a method of creating silver nanoparticles within microbrillar substructures has been reported. 12,13 Nevertheless, no versatile method to install diverse functional materials inside of natural bers has been reported.…”

Reducing drug resistance should be the aim of therapies

“…The bacterial genetic material (DNA and / or RNA) is attacked by synthetic peptide-conjugated phosphorodiamidate morpholino oligomer (PPMO) (Genetical approach), or bacteria can be killed by specific viruses, or by restoration of missing components of the flora from fecal microbiota to balance the missing population and by recently developed [5,9]. Nanotechnologal approach where many types of nanoparticles and nanocomposites are used to target bacteria as an alternative to antibiotics [10]. Many traditional organic substances such as Manuka honey, tea tree and clove oil, and curcumin are also in vogue.…”