Antibacterial food packaging sheets prepared by coating chitosan on corona-treated extruded poly(lactic acid)/poly(butylene succinate) blends

Abstract

This research developed antibacterial food packaging sheets from biodegradable poly(lactic acid)/poly(butylene succinate) 90/10 wt% blend. The corona discharge energy via input current (in A) was set at three levels (4, 5, and 6 A) to investigate its influence on the coating content. Physical and chemical characteristics of treated surfaces were studied using scanning electron microscope, X-ray photoelectron spectroscopy, and contact angle measurement. A simple dip coating was carried out by immersing the sheets in chitosan solutions with four different concentrations (0.25, 0.50, 1.00, and 2.00% w/v). Chitosan content, antibacterial activity, and water vapour transmission rate were evaluated. Tensile tests were performed and results were statistically analyzed. We found that the sheets treated at 4 A corona discharge energy obtained the highest chitosan content while the sheets maintained elongation at break values similar to the untreated sheets. Chitosan coating had some water vapour permeation barrier and also mechanically reinforced the corona-treated sheets. Antibacterial activity tests against Staphylococcus aureus and

Functionalization of Polyethylene (PE) and Polypropylene (PP) Material Using Chitosan Nanoparticles with Incorporated Resveratrol as Potential Active Packaging

“…It is widely known as a valuable material for different biomedical and food applications [3,7,8,9,10,11,12]. There are numerous studies on utilizing chitosan as coating for potential packaging material [13,14,15,16,17,18,19,20,21]. However, in spite of chitosan’s excellent antimicrobial activity, it has been found that chitosan shows very poor antioxidant activity [22,23].…”

Review of fundamentals and applications of polyester nanocomposites filled with carbonaceous nanofillers

“…It is a three-layered structure with carbon atoms concentrated in a sp 2 nanodiamond core. Outer carbon shell is usually made up by the sp 3 and sp 2 carbon atoms. Fullerene or buckminsterfullerene are hollow carbon spheres resembling a soccer ball.…”

“…Applying these polymers in high-tech industrial applications such as; electromagnetic interference (EMI) shielding materials, energy production and conversion devices, textile materials, and biomedical devices, blending and composite formation methods have been studied. [2][3][4] Consequently, mechanical strength, heat stability, glass transition temperature, rheology, and chemical constancy of polyester were enhanced. 5,6 Recently, nanofillers such as nanodiamond, fullerene, graphene, graphene oxide, carbon nanotube, etc.…”

“…It has both nanocrystalline and ultra-nanocrystalline structure with size between 1 and 100 nm. 28 Nanodiamond (zero-dimensional structure) possess sp 2 and sp 3 carbon atom clusters. It is a three-layered structure with carbon atoms concentrated in a sp 2 nanodiamond core.…”

Morphological, Structural, Thermal, Permeability, and Antimicrobial Activity of PBS and PBS/TPS Films Incorporated with Biomaster-Silver for Food Packaging Application

“…Their results showed great antimicrobial activity against S. aureus , Listeria monocytogenes , E. coli , and Salmonella enterica . A chitosan-coated poly(lactic acid)/poly(butylene succinate) blend film made by Hongsriphan and Sanga [ 15 ] also able to present antimicrobial activity against S. aureus and E. coli . Apart from that, several studies on antimicrobial PBS or TPS packaging have also been done by previous researchers.…”