Thermal analysis evaluation of mechanical properties changes promoted by gamma radiation on surgical polymeric textiles

Abstract

Thermal analysis evaluation of mechanical properties J ' changes promoted by gamma radiation on surgi cal , polymeric textiles

Effects of gamma radiation on the mechanical properties of and susceptibility to biodegradation of natural fibers

“…1,13 Gamma irradiation at a dose of 100 kGy was applied in order to bring about distinct changes in the parameters of the fabrics and fibers and, thereby, to enable them to be more easily and accurately analyzed. High radiation doses, exceeding 100 kGy, have been used in textile testing by Ferreira et al 6 and Takacs et al 14…”

“…1 Radiation techniques have proved useful in some processes for the finishing and modification of textiles, such as graftcopolymerization of styrene and acrylonitrile on jute fibers, 2,3 preparing grafted cellulose with hydrogel properties, 4 and flame-retardant finishing of cotton fabrics, 5 and these techniques are used as an effective method of sterilization of textile dressings and others medical textiles. 6,7 In the 1950s attempts were made to use ionizing radiation for the disinfection of various types of historical objects that were inhabited by microorganisms (e.g., fungi and bacteria) or insects, which ended up causing the objects' destruction. 8,9 Radiation disinfection has proved to be an effective method of biological hazard mitigation in historical objects made of wood, leather, paper, and woven fabrics.…”

“…7,12,13 Several researchers have also examined the effect of gamma radiation on some properties of textiles, mainly cellulosic, protein, and polyamide fibers. 2,6,[14][15][16] Ferreira et al, 6 using gamma radiation of 80 kGy, found that the tensile strength of cellulose-polyester nonwoven fabric designed for medical applications was decreased by about 10%. They also showed the effect of the applied gamma radiation doses on the thermal properties of cellulose and polyester fibers.…”

Antimicrobial natural fibres

“…Frequent sterilization of garments by hot methods (steam autoclave or dry heat) or by cold processes (gas or irradiation), respectively (Araujo-Marques and Cabeço- Silva, 2001;Ferreira et al ., 2002), can reduce the danger. Disposable garments are considered useful in preventing contamination, but not all disposable products are effective.…”

Electron beam effect on poly (ethylene terephthalate) fibres

“…Electrons can alter various chemical and molecular bonds, including the reproductive cells of microorganisms, so it should be used carefully. Ionizing radiation (gamma and electron beam radiation) is often used for sterilization of polymeric materials (Ferreira et al , 2002; Gisbert et al , 2009).…”