Creep and Stress Relaxation Behaviour of Rice Husk Reinforced Low Density Polyethylene Composites

Abstract

The creep and stress relaxation behavior of rice husk reinforced low density polyethylene composite was analyzed in this study. The exponential and power model were used to study the creep while the stress relaxation assessed the time required for the composites to maintain a certain strain level. The creep strain increased with increase in time, at various temperatures, with its highest creep at 70 o C while the lowest is at 30 o C, the power model provided an excellent fit than other models with a coefficient of determination of 0.9977 at 30 o C, the neat low density polyethylene had a good stress relaxation behavior with 4.95 seconds for it to decay and subsequently decreased with increase in filler concentration.

Improvement of Interfacial Adhesion and Thermomechanical Properties of PLA Based Composites with Wheat/Rice Bran

“…In the evaluation of the quasi-static tensile tests results for the evaluation of beeswax as interfacial agent are showed in Table 2 where the experimental work has been compared with literature mechanical values of bran-based bio-composites developed for rigid applications, displaying how they are similar to the results of the present paper. More specifically, it is evident how the behavior of melt fluidity is reflected in the trend of RB mixtures: in fact, a lowering of the elastic modulus is evident with the increase of the quantity of RB as stated also by Nwosu et al [58]. On the contrary, this behavior is not present for the bio-composites with wheat bran with and without wax in which the Young's Modulus remains almost constant also with respect to the value of the matrix, showing a trend similar to MFR.…”

Mechanical Properties and Morphological Analysis of High-Density Polyethylene/Poly(Ethylene Glycol) Methacrylate/Rice Husk Composite

“…Such filler particles then retain air and introduce porosity to the composite's internal structure and create stress concentration points. Other than this, since the fraction of the matrix decreased, the increase in the filler loading caused the material to become brittle thus decreasing the tensile strength [2]. As seen in Figure 1.a, although there wasn't much significant change in 0PHR-50/50 and 0PHR-70/30, it could be observed in the 1PHR and 5PHR samples that the addition of rice husks significantly affect the values.…”

“…Thus, this carbon-rich material is considered an abundant waste, especially in rice-producing countries. This is usually a problem for rice farmers since rice husks usually resist decomposition and are not recommended as feeds for animals since these have low nutritional value and can cause difficult digestion for animals [2]. Most of these rice husks are usually just stockpiled or burnt.…”

Recent trends in synthetic strategies using magnetic nanostructures as green catalysts in synthesis of pyran analogues

“…[98][99][100] Anticancer, antidiabetic, geroprotective, hepatoprotective, antiatherosclerotic, vasodilator, antitumor, and bronchodilator properties have been demonstrated in fragments encompassing pyran motifs. [101][102][103][104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119][120] Synthetic chemists have developed innovative, effective,…”

“…[ 98–100 ] Anticancer, antidiabetic, geroprotective, hepatoprotective, antiatherosclerotic, vasodilator, antitumor, and bronchodilator properties have been demonstrated in fragments encompassing pyran motifs. [ 101–120 ] Synthetic chemists have developed innovative, effective, and green catalytic methods for the production of pyran frameworks as a result of their beneficial bioactivities. The current review emphasizes the recent advances in the last 5 years, synthesis of bioactive pyran derivatives via the catalytic system of iron‐based magnetic nanoparticles and nanocomposites.…”