The possibility to arrange and embed magnetic micro- nanoparticles in thin polymer film systems using flat magnetically patterned substrate templates is investigated. In contrast self-organized particle rows forming by applying a homogeneous field, particles adapt the field landscape of substrate's pattern prior crosslinking. Crosslinking then fixes positions polymer. process tested for composi...

Abstract Active food packaging materials produced through electrospinning of polyvinyl alcohol (PVOH) containing essential oils (EOs) from two broadly used spices (Laurus nobilis –LEO- and Rosmarinus officinalis -REO-) were developed applied to chicken breast fillets with the aim prolonging their shelf-life. Citric acid (CA) was successfully incorporated as a natural cross-linker electrospun st...

Blend film of polyvinyl alcohol (PVA) based gelatin was prepared by mixing aqueous solutions of both samples. The mixed aqueous solutions of both samples in different ratios (P1, P2, P3, P4 and P5) were then cast onto silicon paper covered glass plate to form film. These films were then irradiated under gamma radiation (60Co) with different intensities (total dose) like 50, 100, 150, 250 and 50...

background and objectives: preparation and evaluation of nanocomposite films have become prevalent in recent years. one of the most important methods for dispersing nanoparticles in polymers is the use of ultrasound radiation. polyvinyl alcohol-montmorillonite (pva-mmt) nanocomposite films were prepared via solvent casting method. materials and methods: the effects of different ultrasound times...

the objective of this research was to compare the tensile, permeability, solubility and color properties of plasticized starch-polyvinyl alcohol-montmo-rillonite (ps-pva-mmt) and plasticized starch-polyvinyl alcohol-cellulose nanocrystal (ps-pva-ncc) bionanocomposite flms. the results showed that adding mmt (7%), increased the ultimate tensile strenght from 4.2 mpa to 4.61 mpa, however, ncc (7%...

A novel nanocomposite polyvinyl alcohol precursor-based material dispersed with the web of carbon microfibers and carbon nanofibers is developed as lithium (Li)-ion electrolyte battery separator. The primary synthesis steps of the separator material consist of esterification of polyvinyl acetate to produce polyvinyl alcohol gel, ball-milling of the surfactant dispersed carbon micro-nanofibers, ...

During compounding processes, polymer latexes are mixed with various colloidal systems (in particular, PVOH) or surface-active agents to modify the flow behaviour in order to suit the manufacturing process. In this study, the flow behaviour of aqueous dispersed PVAc, NR and different mixed dispersions were investigated both in the absence and presence of PVOH as flow modifier, using an Ostwald ...

The structures of inkjet coatings commonly contain a high concentration of fine diameter pores together with a large pore volume capacity. To clarify the interactive role of the porous structure and the coincidentally occurring swelling of binder during inkjet ink vehicle imbibition, coating structures were studied in respect to their absorption behaviour for polar and non-polar liquid. The abs...

polyvinyl butyral (pvb) was synthesized by condensation reaction of polyvinyl alcohol (pva) with butanal in aqueous medium containing an effective emulsifier and an inorganic acid as catalyst. the product was characterized by, ir, tg and dtg techniques. percentage of vinyl alcohol groups in the pvb was determined by a chemical method according to a standard method. some clear and soft film samp...