Polyolefine Composites Reinforced by Rice Husk and Saw Dust

Abstract

7Due to the global demand for fibrous light-weight materials, research on composites 8 reinforced with plant materials has increased. Natural fiber reinforced composites offer 9 several advantages: light weight, competitive specific mechanical properties, easy 10 processing, large volume availability, low cost, and low environmental footprint. 11Especially, using agricultural wastes such as rice husk, saw dust etc. as fillers/fibres in 12 composites provides the chance to improve material properties while improving their 13 sustainability. In the present work, rice husk and saw dust were chosen as fillers for their 14 differing morphology, aspect ratios, and difference of structure. As matrices, polyethy-15 lene (PE) and polypropylene (PP) were studied, either neat or modified with maleic 16 anhydride grafted PP/PE as coupling agent or compatibilizer between hydrophobic 17 matrices and hydrophilic bio-fillers. The bending modulus is improved due to filler 18 addition. In presence of compatibilizer, the improved interfacial interaction leads to 19 improved bending and tensile strength as well as toughness. Furthermore, the influence 20 of the filler and compatibilizer on composite properties such as hardness, dynamic 21 mechanical behaviour, thermal expansion, thermal degradation, melting and crystalli-22 sation behaviour are presented.23

Optimization of the mechanical properties of polyester/coconut shell ash (CSA) composite for light-weight engineering applications

“…Additional scrutiny revealed higher strength as particle size reduced for all proportions. Conversely, the result presented in this study is contrary to the outcomes expounded in Doan et al 57 and Kolawole et al 58 . In the work of Doan et al 57 ; 30, 40, 50 and 60 wt.…”

“…Conversely, the result presented in this study is contrary to the outcomes expounded in Doan et al 57 and Kolawole et al 58 . In the work of Doan et al 57 ; 30, 40, 50 and 60 wt. fraction of rice husk filler of sizes 500-850, 350-500 and 180-350 µm resulted in linear decrease in strength at increasing filler loading.…”

“…fraction of rice husk filler of sizes 500-850, 350-500 and 180-350 µm resulted in linear decrease in strength at increasing filler loading. Lesser particle sizes which ensued good interfacial bonding between filler and matrix could be the reason for the discrepancy between present study where particles sizes of 40, 30 and 20 µm was adopted compared with the investigations carried out by Doan et al 57 . The same reason goes with Kolawole et al 58 who utilized dates pal pits particulate of sizes 300 and 150 µm between 10 and 50 wt.…”

Injection Molding of Highly Filled Polypropylene-based Biocomposites. Buckwheat Husk and Wood Flour Filler: A Comparison of Agricultural and Wood Industry Waste Utilization

“…Despite the same filler content, the hydrodynamic interactions for wood-fiber-based composites are clearly increasing, which means that this type of material can be characterized as semidilute regime. In the discussed case, where rheological properties still do not indicate strong hydrodynamic interactions for the buckwheat husk, the main reason for the different behavior of the PP/WF30 sample is the higher aspect ratio (L/d) for WF, which according to the literature is around 10 [50,51] for this type of commercially available fibers, whereas for grounded husk fillers this coefficient ranges from 2 to 3 [56,57,58].…”

Characterization of Rice Husks as Potential Reinforcement for Polymer Composites

“…Even though conventional polymers like polypropylene and high-density polyethylene are less costly than biopolymers, the price of accruing products can be reduced further by using agricultural fibers as reinforcement (Huerta-Cardoso et al 2020). Moreover, their incorporation in polymer composites is sustainable and produces lightweight, non-hazardous and non-abrasive biocomposites (Chougan et al 2020;Hegyesi et al 2019;Doan et al, 2016).…”