The aims of this study were to compare the effects of sealing forage corn with a new oxygen barrier film with those obtained by using a conventional polyethylene film. This comparison was made during both ensilage and subsequent exposure of silage to air and included chemical, microbiological, and molecular (DNA and RNA) assessments. The forage was inoculated with a mixture of Lactobacillus buc...

The adhesion between mineral surfaces and organic polymers is important in many industrial products. Examples range from paints to filled plastics and fiber reinforced composites. Talc, for example, is well known to be an important reinforcing filler for polyolefins such as polypropylene (PP) and polyethylene (PE) [1]. Usually, for this application, there is no need to treat the mineral surface...

There is an increasing demand for bio-based polymers that are developed from recycled materials. The production of biodegradable polymers can include bio-technological (utilizing microorganisms or enzymes) or chemical synthesis procedures. This report demonstrates the corroboration of the molecular structure of polyhydroxyalkanoates (PHAs) obtained by the conversion of waste polyethylene (PE) v...

Polystyrene and polystyrene copolymers have many unique properties that make them desirable for use in flexible packaging. Polystyrene monofilms however are not practical for use on high-speed packaging lines due to their poor heat sealability and flex cracking. Coextruded films of polystyrene with polyethylene combine the desirable properties of polystyrene with polyethylene. Still, PS coextru...

This study focuses on the development of low-density polyethylene matrix nanocomposite films for food packaging industry and aims at improving oxygen barrier properties while maintaining other relevant characteristics, such as processability, easy post-processing, optical mechanical properties. nanocomposites, with 1 2.5 wt.% nanoclay (NC) also compatibilized 5 grafted maleic anhydride (PE-g-MA...

We present a complete analysis of the structure of polyethylene (PE) nanoparticles synthesized and stabilized in water under very mild conditions (15 degrees C, 40 atm) by a nickel-catalyzed polymerization in aqueous solution. Combining cryogenic transmission electron microscopy (cryo-TEM) with X-ray scattering, we demonstrate that this new synthetic route leads to a stable dispersion of indivi...

This paper reports a morphological transition of the spherical colloidal structures of the sodium dodecyl sulfate-polyethylene-b-polyethylene glycol (SDS-PE-b-PEG) complex and anionic micelle (SDS) to "rod-shaped" colloidal structures induced by a charge transfer dye, 1,8-naphthalimide (NAPMD) (forms anions in aqueous solution by intermolecular charge transfer). The distinct steady-state result...

In this work, the percentage of polyethylene (PE) and polypropylene (PP) blend is controlled at 50:50 to make composite by forming a co-continuous structure with hexagonal boron nitride (h-BN). The h-BN wrapped thermoplastic elastomer styrene-ethylene-propylene-styrene (SEPS). This approach enables localized distribution interface PE/PP SEPS phases, allowing construction heat conduction path in...

conducting polymers, because of their special properties, are used to introduce conductive polymeric composites. also, clays have recently been used for preparation of polymer composites with enhanced mechanical and thermal properties. the aim of this work is to study the synergetic effect of the co-presence of conducting polyaniline and montmorillonite in the polyethylene matrix. polyethylene ...

Polyethylene (PE) and its variations are among the most traditional materials used for cushioning in packaging systems. The role of these is to prevent damages during handling distribution processes from physical events such as vibration stress. This study presents new results on characterization properties PE XPE (cross-linked polyethylene) materials, which have significant relevance a protect...