Date Palm Fiber-Reinforced Recycled Polymer Composites: Synthesis and Characterization

Table 1

Research studies on thermoplastic-based RP-DPF composites.

Reference	Fabrication method	Type and rations of fibers	Matrix materials	Mechanical tests
Alawar et al. [16]	Double screw extruder	Untreated date palm tree fibers with rations of 25 wt%.	Polypropylene	Tensile strength and modulus of elasticity
Sadik et al. [17]	Hand layup	Date palm frond fibers with rations of 30, 40, and 50 wt%.	Polyethylene	Tensile strength, bending strength, impact strength, and hardness
Mahdavi et al. [18]	Extruder, hand lumpy shapes, and hot press	Trunk, rachis, and petiole with rations of 20, 30, and 40 wt%.	Polyethylene	Tensile strength, and flexural strengths
Alewo et al. [19]	Casting poured into the prepared mold prepared samples were then cut according to ASTM	Date palm seed particle with rations of 5, 10, 15, 20, and 25 wt%.	Polyester	Tensile strength, elastic modulus, and hardness
Al-Otaibi et al. [20]	A twin-screw extruder and injection molding machine	Date palm fiber with rations of 5, 10, and 15 wt %	Recycled homopolymer polypropylene	Tensile strength and tensile modulus
Alsewailem et al. [21]	The blends were melt mixed for 10 min and then injected into a mold	Date pits with rations of 30 wt%	High density polyethylene (HDPE) and polystyrene (PS)	Tensile and impact
Lei et al. [22]	Composites with dimensions of  mm^3 were obtained using thermocompression. Thermocompression was performed in a hydraulic press	Wood and bagasse with rations of 30, 40, and 50 wt%	Recycled high density polyethylene (RHDPE)	The modulus and impact strength
Dehghani et al. [23]	Composites were prepared using twin-screw extruder followed by injection molding	Surface treated date palm leaf fiber with rations of 5, 10, and 15 wt%	Recycled poly (ethylene terephthalate)	Tensile strength, flexural strength, and impact strength
M.d. K. Hossain et al. [24]	Composites were prepared using rectangular closed steel mold of 450KN Weber-press together with the HDPE pellets. The mold was then compressed with 100KN pressure at 145°C for 20 min and allowed to cool to room temperature	Jute-mat fiber with rations of 25 wt %	Density polyethylene (HDPE)	Tensile strength, young modulus, flexural strength, tangent modulus, and hardness
Masri et al. [25]	The reinforcement is mixed with the matrix and lignin. Then, the mixture (reinforcement/matrix/lignin) is poured into a metal mold to obtain plates of dimensions  mm^3; a holding pressure of 3.5 bar is applied for 10 min to ensure a good distribution of the mixture and to reduce the air in the LPC	Leaflet with rations of 70%	Recycled polystyrene	Three-point bending tests and elastic modulus