Chemical, Thermo-Mechanical and Antimicrobial Properties of DBD Plasma Treated Disinfectant-Impregnated Wipes during Storage

Abstract

Disinfectant-impregnated wipes are broadly used in hospitals, as an important approach for infection prevention and control. But their ageing performance has rarely been studied. Untreated and Dielectric Barrier Discharge (DBD) plasma pre-treated wiping materials made of nonwoven 100% polyester (W1), nonwoven 55% cellulose/45% polyester (W2) and woven cotton (W3) were impregnated with a quaternary ammonium compound solution (ADBAC) for 30 min, 3, 7, 15, and 30 days of storage time and characterized in term of chemical, thermo-mechanical and antimicrobial efficacy. X-ray photoelectron spectroscopy analysis on the plasma-treated polyester wipes demonstrates the incorporation of reactive oxygen species on the fiber surface. Laser scanning microscopy demonstrates the plasma etching effect in smoothing the surface of the cotton wipe reducing the adsorption of ADBAC. The result showed no significant changes in breaking force and elongation during storage for W1 and W2. However, plasma treatment affects W3 in weft direction reducing the force at break in water and ADBAC treated wipes. Dynamic mechanical analysis results show that ADBAC and plasma treatment have a significant influence in W1 and W3 viscoelastic properties improving the elastic response limiting the polymeric chains mobility and the non-elastic response due to the etching effect, respectively. Overall, the plasma pre-treatment of ADBAC-impregnated wipes is able to enhance the antimicrobial performance and the storage time of polyester-containing wipes.

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

“…With time, the values approach the angle measured before being treated, emphasizing the aging process. This result confirms what has already been reported for other studies that modified polymeric materials by plasma at low pressure or atmospheric pressure [ 3 , 9 , 16 , 42 , 59 , 66 , 67 ]. Because the bonds generated by plasma treatment are formed only on the HDPE surface, the mobility of the polymeric chain and reaction of these polar groups with the environment humidity can promote the breakage of this bond or the stabilization of the same [ 3 , 9 , 16 , 42 , 66 ].…”

“…Since the chemical modifications have aged over time, influencing the polar coordinate more clearly, due to the formation of functional groups with oxygen, the physical modification tends to be maintained, with the aging of morphological modifications not evident in polymers [ 1 , 33 ]. This change in surface roughness is due to the etching action promoted by the species present in the plasma, as reported in the literature [ 67 , 72 , 73 , 74 , 75 ].…”

Antimicrobial Efficiency and Surface Interactions of Quaternary Ammonium Compound Absorbed on Dielectric Barrier Discharge (DBD) Plasma Treated Fiber-Based Wiping Materials

“…It seems that the antimicrobial test result did not show a significant increase from the plasma-treated wipe samples even though a higher ADBAC concentration was observed from the XPS analysis. However, in a previous aging study of the plasma effect on antimicrobial efficacy, it was found that plasma treatment can prolong the release of increased ADBAC on the surface of W1 (polyester) doubling the shelf time . This result, in addition to the fact that only in the pure polyester wipe (W1) was it possible to observe a significant amount of ADBAC on the wipe surface, demonstrates the efficacy of plasma treatment in tightly maintaining the disinfectant where it is really needed for a long time.…”

Evaluation of guar gum for the consolidation of some cellulosic packaging materials for mummies

“…They also said that the band at 2900 cm-1 indicated cellulose. Some other authors [43][44][45] explained the use of FTIR in the EVALUATION OF GUAR GUM FOR THE CONSOLIDATION OF SOME CELLULOSIC .. __________________________________________________________________________________________________________________ ________________________________________________ Egypt. J. Chem.…”