Abstract Foams are mainly composed of dispersed gas trapped in a liquid or solid phase making them lightweight and thermally insulating materials. Additionally, they applicable for large surfaces, which makes attractive thermal insulation. State-of-the-art foams made synthetic polymeric materials such as polystyrene. This work focuses on generating foam from surfactants renewable lignocellulosi...

Waste materials derived from shrimp processing signify 40 to 45 % of the weight of the catch or harvest. For Biotechnology, waste materials are secondary material, as contrast of raw materials, to generate value-added products, such as chitin, protein, and pigments. We used the pH-shift and enzymatic autohydrolysis processes to obtain protein concentrates from the cephalothorax of whiteleg shri...

In this paper, the effects of limited hydrolysis on functional properties, as well as on protein composition of laboratory-prepared pea protein isolates, were investigated. Pea protein isolates were hydrolyzed for either 15, 30 and 60 min with recombined chymosin (Maxiren). The effect of enzymatic action on solubility, emulsifying and foaming properties at different pH values (3.0; 5.0; 7.0 and...

in many processes polymeric foams can be produced by using chemical or physical blowing agents. in this work for polyethylene foam production, the chemical blowing agents and compression moulding process were employed. at first, by using dsc diagram of two polyethylene grades, a suitable polyethylene grade was selected for foam production and then we discuss about blowing agent critical percent...

Abstract In this work, chitosan (CT) with different ratios (0–5 wt.%) was utilized as a bio filler in polyurethane flexible (PUF) foam to increase mechanical performance and bacterial inhibition characteristics. The chemical structure of CT foam/ (PUF/CT) composites examined using FTIR spectroscopy. Furthermore, the cross-link density PUF/CT Flory Rhener equation. Moreover, composites’ thermal ...

EXPERIMENTAL OBJECTIVE To provide a safe, simple, relatively inexpensive, fast, accurate way of quantifying balance performance either in isolation, or in the face of challenges provided by 3D high definition moving visual stimuli as well as by the proprioceptive challenge from standing on a foam pad. This method uses the new technology of the Wii balance board to measure postural stability dur...