Thermal, Flammability, and Morphological Properties of Nano-composite from Fir Wood Flour and Polypropylene

Abstract

The thermal, flammability, and morphological properties were investigated for a nano-composite made from fir wood flour and polypropylene. Polypropylene (PP), fir wood flour, maleic anhydride polypropylene (MAPP), and nanosilica at 5 different concentrations (0, 2, 4, 6, and 8 phc), were mixed using an extruder, and samples were made using a handpress. Then, the hardness and the thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), limited oxygen index (LOI), X-ray diffraction (XRD), and scanning electron microscopy (SEM) results were studied. The results showed that increasing the nanosilica content up to 8 phc increased the hardness. Also, when the nanosilica content was increased to 8 phc, the thermal stability increased and more charcoal was retained. Increasing the nanosilica content increased the crystallization. The limited oxygen index increased. Studying the x-ray diffraction spectrum showed that the width and peak intensity decreased with the increased intake of silica nanoparticles. Scanning electron microscopy images showed that an increased concentration of nanosilica meant better connections and a more uniform bond was established between the fibers and the matrix.

Effect of Nanosilica on Thermal, Flammability, and Morphological Properties of Wf/RPS-Based Nanocomposites

“…The SEM images showed that compatibility and the connection between the cellulose material and polymer matrix increased by increasing of nanosilica levels. Therefore, better and stronger joints were created between the matrix and the fibers; this issue can be confirmed by considering the amount of empty spaces and homogeneity of breakage surfaces on the composites (Bazyar and Samariha 2017). In addition, an increased LOI in these samples could also confirm this issue.…”

Impact of hybrid nanosilica and nanoclay on the properties of palm rachis-reinforced recycled linear low-density polyethylene composites

“…Moreover, associate increasing of thermal stability could also be the result of associate increasing of interaction between the R-LLDPE matrix, PR fibers, and nanoparticles. 38…”

“…Moreover, associate increasing of thermal stability could also be the result of associate increasing of interaction between the R-LLDPE matrix, PR fibers, and nanoparticles. 38 DSC measurements were performed to characterize the thermal behavior of the R-LLDPE and the R-LLDPE/PR fiber composites. The melting temperature (T m ) and melting enthalpy (H m ) of the composites samples were determined from the first heating DSC curves and are listed in Table 3.…”

Effect of nanosilica and aluminum hydroxide on thermal, flammability, and morphology properties of nanocomposite made of recycled high-density polyethylene and OCC flour

“…In addition, an enhancement of nanosilica particles could occupy part of the voids and reduce pores. Therefore, the accessibility of oxygen for ignition would be more difficult (Bazyar and Samariha 2017).…”

“…The presence of nanosilica prevented movement of the volatile and flammable gases from pores and exiting from the inner side of composites toward their surface. Therefore, the presence of nanosilica increased the LOI (Bazyar and Samariha 2017). Nanosilica filled the gaps and acted as an obstacle against penetration and movement of oxygen toward nanocomposites' structure.…”