Lignocellulosic fibers have received much more attention than ever before from the research community all over the world during the past few years because of their enormous advantages. A study on the preparation of new series of polymer composites using Pine Needles as a reinforcing material in Urea Formaldehyde resin has been made. Mechanical properties of intimately mixed particle reinforced ...

Portions of a 1251-iodinated bovine serum albumin preparation were exposed to freezing, acetic acid (pH 3.5, 3.0 or 2.5), urea or formaldehyde, and the effect of these treatments on the rates of pinocytic uptake by yolk sacs from 17.5-day-pregnant rats cultured in vitro and of clearance from the rat bloodstream were studied. Uptake of albumin by the yolk sac was followed by rapid release-of ['2...

Urea-formaldehyde prepolymer and hot-press drying were used to improve the properties of poplar wood. The wood was impregnated with the prepolymer using a pulse-dipping machine. The impregnated timbers were compressed and dried by a multilayer hot-press drying kiln. The drying rate was more rapid during the chemical modification and hotpress drying than conventional kiln-drying. In addition, th...

EIn order to reduce formaldehyde emissions, an experimental investigation of lightweight flax shives based particleboards, prepared using two different binders: bio-based lignin (lignosulfonate) and partially epoxy resin (greenpoxy 56), was undertaken. The particleboards (with a target density 500 kg/m³), were elaborated by thermo-compression process 20 wt% binder content. directly valorised as...

Sesame cake and meal, byproducts of the sesame oil process industry mainly used as feed fertilizer, are often not optimally utilized wasted when material could be a high-quality protein source. This research primarily emphasizes preparation protein-based adhesive with urea glyoxal modification to use wood adhesive. The performance characterization modified (USP GUSP, respectively) were measured...

Platinum group metal-free catalysts have been intensively investigated in the last decades as an alternative to platinum with aim of lowering cost polymer electrolyte fuel cells. In particular, iron-nitrogen-carbon (Fe-N-C) has proved be most active towards oxygen reduction reaction. For practical application, a hierarchical pore structure is required, micropores favouring creation sites and la...

An experiment was conducted to investigate the effects of the resin solid content, catalyst content, and pH value obtained by the addition of two kinds of catalysts on the gel time of a urea–formaldehyde (UF) resin. Upon the addition of ammonium chloride, the pH value of the resin mixture decreased to 7 but not significantly further because of the limited free formaldehyde in the system. The pH...

Cyanamide as the source of carbon and nitrogen was used to modify iron(III) oxide (Fe2O3) photocatalyst. While X-ray diffraction (XRD) patterns confirmed that cyanamide-modified Fe2O3 photocatalysts have comparable crystallinity unmodified Fe2O3, diffuse reflectance ultraviolet-visible (DR UV-vis) spectra obviously showed additional light absorption around 500-800 nm on resulting in a better ca...