Carvacrol affects interfacial, structural and transfer properties of chitosan coatings applied onto polyethylene

Chitosan: Emergence as potent candidate for green adhesive market

“…Chitosan surface tension decreases with increasing chitosan concentration. A 2% (w/v) chitosan in 1% (v/v) acetate solution exhibited 38.59 mN/m surface tension at dispersive end and 1.10 mN/m at polar end [25]. It explains that acid-base Lewis interaction dominates, this property of chitosan favours bonding with material having low surface energy.…”

“…If the surface tension of the adhesive is greater than the surface energy of the substrate, it will not spread out and form a film. Metals possess higher surface tension than polymers [24,25]. Surface tension of viscoelastic thermal compressed wood ranged between 28.6 and 35.5 mN/m and 0.5% (w/v) chitosan shows 64 mN/m surface tension initially and decreased with time [26].…”

Gas barrier properties of polymer/clay nanocomposites

“…11,70,93,94 In addition, absence of a solvent makes melt intercalation an environmentally favorable method for industries from a waste perspective. [97][98][99][100] Coatings and multilayers are effective but their application is limited by the adherence between the materials involved. The other methods used to enhance gas barrier properties of PNCs are the use of coating particles with high barrier materials and the use of multilayered lms containing a high barrier lm.…”

Influence of some formulation and process parameters on the stability of lysozyme incorporated in corn flour- or corn starch-based extruded materials prepared by melt blending processing

“…This allowed observing that volatile antimicrobial molecules such as those present in essential oils are generally lost by evaporation during these operations [13]. As foreseen, this confirms that antimicrobial volatile molecules addition to polymeric materials by other ways such as incorporation in a layer of enduction deposited at the surface of materials following their elaboration should be preferred [14]. The possibility to incorporate non-volatile natural antimicrobial molecules such as sorbic acid [15], nisin [16], or lysozyme [7,13,17] has also been studied.…”