Mechanical performance of hybrid rice straw/sea weed polypropylene composites

Abstract

Rice straw (Rs)/polypropylene (PP) composites were prepared in the different ratio of 5 : 95, 10 : 90, 15 : 85, 20 : 80, 25 : 75, and 30 : 70 (Rs wt % : PP wt %) by an injection molding process. This work investigated the tensile strength (TS), bending strength (BS), and impact strength (IS) of the composites. From the results, it is observed that Rs20 : PP80 mixture composite showed better performance with mechanical properties (TS ¼ 26.2 MPa, BS ¼ 58 N/mm 2 , and IS ¼ 1.7 KJ/mm 2 ) among the composites prepared. Two hybrid composites were also fabricated using 20% Rs, 10% seaweed with 70% PP and 20% Rs, 30% seaweed with 70% PP. In between the two hybrid composites, superior mechanical behavior showed by the hybrid composite in ratio of Rs20 : Sw10 : PP70 with enhanced results such as TS ¼ 28 MPa, BS ¼ 68 N/ mm 2 , and IS ¼ 2.5 KJ/mm 2 . Water uptake, simulating weathering, and soil degradation test of different composites were also performed.

Effect of Gamma Radiation on the Mechanical Properties of Urea-Treated Rice Straw Polypropylene Composites

“…The low value at high filler content may be due to the presence of so many filler ends in the composites, which could cause crack initiation and hence potential composite failure [22] . Concerning the above results, it is noted that the composites RS30 prepared by formulation as 30% RS in 70% PP exhibit better mechanical behaviour, which is an identical result of our earlier work [10] and henceforward, for this formulation, it would have to be supposed the optimised system for further experimental study.…”

“…In the last decade, bio-composite materials based on biodegradable polymer matrices and natural fibers as reinforcements have received significant scientific attention [6][7][8][9] . The fibers used to reinforce thermoplastics mainly include wood, cotton, flax, hemp, jute sisal, and sugarcane fibers [10] .…”

Effect of surface modification of rice straw on mechanical and flow properties of TPU‐based green composites

“…Straw based materials are generally used as filler in thermoplastic polymers and used in the manufacture of particleboard and fiberboard with thermoset resins . Pristine and surface treated RS were used as additive in several thermoplastic polymers including polyethylene , polypropylene , polyvinylchloride , poly (lactic acid) , polystyrene , poly (caprolactone) , and poly (butylene succinate) .…”

Role of compatibilizers on the physicomechanical performance of tea dust polypropylene composites

“…At intermediate level of TD loading (40%), the population of the fibers is just right for maximum orientation and the fibers actively participate in stress transfer. High levels of TD content showed that the increased population of fibers leads to agglomeration and stress transfer gets blocked and the resulting composite property is again found to decrease 16, 17. Figures 3 and 4 show that with the increase of the TD content to the polymer composites, the Eb decreases and the TM increases.…”