In the study walnut shells (WS) and silanized walnut shells (S_WS) were used as cellulosic
fillers for novel polyurethane (PU) composite foams. The impact of 1, 2 and 5 wt% of WS and …

Polyurethane (PU) composite foams were prepared by pour method with soy-based polyol
(soyol). Foams were tested for the evaluation of mechanical properties and cell …

Viscoelastic polyurethane (PU) foams based on modified tung oil, ethylene glycol and
polymeric MDI, and reinforced with rice husk ash (RHA), were prepared by a free-rise …

A chemically modified tung oil was used as the main polyol component in the formulation of
viscoelastic (low resilience) polyurethane foams. Rice Husk Ash (RHA), a residue from the …

Natural fillers including cellulose, chitin, hazelnut, and eggshell are some of the most
abundant bio-resources available for performance-cost-benefit applications. For this study …

Polyurethane (PU) composite foams were successfully reinforced with different
concentrations (1 wt%, 2 wt%, 5 wt%) of nutmeg filler. The effect of nutmeg filler …

The green rigid polyurethane (PU) foam has been developed with 100% soy polyol after
optimization of formulation ingredients and lignin has been introduced and isocyanate …

This study was focused on evaluating the suitability of a wide range of lignins, a natural
polymer isolated from different plant sources and chemical extractions, in replacing 20 wt …

This paper summarizes our work aimed at applying thermoset polyester composite waste in
the preparation of polyurethane (PU) foams according to the circular economy assumptions …

A series of flexible polyurethane foams (FPFs) with the addition of substrates from
renewable resources were prepared, in order to investigate the influence of these fillers on …