Studies on the properties of nonwoven surgical gowns

Abstract

Polypropylene spunbond, spunbond/meltblown/spunbond, and spunlace fabrics of 35 and 50 g/m 2 weight are tested for barrier properties against microorganisms and liquid or body fluids to estimate their suitability for surgical gowns. The fabrics are also treated with different levels of antibacterial and fluorochemical finishes in a single bath using pad-dry-cure method. Liquid barrier properties of samples are analyzed by water impact penetration, hydrostatic pressure test, and blood repellency test. Parallel streak method is used to measure the antibacterial activity on the fabric samples with Staphylococcus aureus. The fabric samples are also analyzed for air permeability and stiffness. It is observed that spunbond/meltblown/spunbond fabric of 35 and 50 g/m 2 weight offer sufficient liquid barrier properties for level 2 protection as per the Association for the Advancement of Medical Instrumentation barrier protection classification. Spunlace and spunbond fabrics of 35 and 50 g/m 2 weight offer only level 1 protection. Spunbond/meltblown/spunbond fabrics are poorest in terms of comfort, because of their higher stiffness and lower air permeability values; spunlace fabric offers the highest air permeability and lowest stiffness force. Spunbond/meltblown/spunbond fabric samples with 4% and 7% fluorochemical finish and 1.5% antibacterial finish can provide level 4 protection. Spunbond fabrics require 4% and spunbond/meltblown/ spunbond fabrics require 1% fluorochemical finish to achieve level 2 protection.

Platelet lysate and adipose mesenchymal stromal cells on silk fibroin nonwoven mats for wound healing

“…Furthermore, by a biomedical point of view, it is known that obtaining nonwoven fabrics by the water entanglement method, allows the formation of materials with optimal air permeability, usually higher with respect to other methods for obtaining nonwoven mats. This is a fundamental aspect when the mat is placed on the wound, because the oxygen is fundamental in the healing process …”

“…This is a fundamental aspect when the mat is placed on the wound, because the oxygen is fundamental in the healing process. 72 Silk fibroin nonwoven mats were characterized in term of weight/area ratio, thickness and porosity % (Table I): porosity, that is one of the most important parameters for cell attachment and proliferation, is almost the same for all the specimens indicating that, probably, independently from the sample thickness, all the obtained materials could be proposed for the in vivo application. The high porosity shown by the obtained SF mats by the water entanglement method results higher than that obtained by similar nonwoven mats produced by electrospinning.…”

Water-Resistant Mechanoluminescent Electrospun Fabrics with Protected Sensitivity in Wet Condition via Plasma-Enhanced Chemical Vapor Deposition Process

“…As a representative measurement of breathability, the water vapor transmission rate (WVTR) of the composite fabric was measured (Figure 9). WVTR is generally affected by surface wettability and porosity of the material, as those factors influence the adsorption and transport of water vapor [56,57]. The hydrophobic ML/PVDF composite showed a higher WVTR than the hydrophilic ML/PAN.…”

An Experimental Investigation on Optimizing Liquid Repellency of Fluorochemical Urethane Finish and Its Effect on the Physical Properties of Polyester/Cotton Blended Fabric

“…These are mainly divided into three categories: fluorocarbon-based, silicon-based, and hydrocarbon-based [3,4]. Fluorocarbon-based DWRs or fluoro-chemicals are the most popular choice due to their lowest surface energy [2,[5][6][7][8]. They have revolutionized the functional textile market because of their high durability and consistent performance [8].…”