Barley husk and coconut shell reinforced polypropylene composites: The effect of fibre physical, chemical and surface properties

The utilization of biochemically modified microfibers from grain by-products as reinforcement for polypropylene biocomposite

“…The WPC processors and mills estimate that the price of microfibers prepared from grain by-products is about twice lower than that of microfibers from wood, and the acquisition is simplified. Moreover, they are obtained from annual plants, making them even more sustainable than wood fibers processed from trees [21][22][23]. The only obstacle which may arise is caused by the contamination of husks with starch, proteins and fats from grain rests.…”

Mechanical Properties of Activated Carbon (AC) Coir Fibers Reinforced with Epoxy Resin

“…The impact performance of fiber-reinforced composites depends on many factors including the nature of the constituent, carbon/matrix interface, the construction and geometry of the composite and test conditions. The nature of the interface region is of extreme importance and is directly related to the toughness of the composite (Bledzki, Mamun, & Volk, 2010). The impact strength of a composite is influenced by many factors, including the toughness properties of the reinforcement, the nature of the interfacial region and frictional work.…”

The Effects of the Substitution of Wood Fiberwith Agro-based Fiber (Barley Straw) on the Properties of Natural Fiber/Polypropylene Composites

“…Also, in theirstudy the change of impact strength was insignificant, with a decrease less than 1.5 %.Generally, the strength of fiber-reinforced composites depends on the properties of the constituents and the interface interaction [13].The mechanical properties of composites can be attributed to the quantity, strength and modulus of cellulosic fibers, as well as to interfacial adhesion between the matrix and the fiber. Compatibilizers, such as MAPP, are used to improve interfacial adhesion between hydrophilic cellulosic fibers and hydrophobic polypropylene [7,8,14,15], and consequently, the mechanicalandmoisture-related properties [16] of composites are improved.Due to the differences in chemical compositions ofvarious cellulosic fibers, the effects of compatibilizerare not similar for all. Wood and barley straw contain the same principal components, that is, cellulose, hemicellulose, and lignin,but there are significant differences in the proportions of those components.…”

“…Field crop residues and/or agricultural byproducts are excellent alternative waste materials to supplement or substitute wood because they are abundant, inexpensive, widespread, and easily available [9]. The use of cereal straw and other agricultural byproducts or agro-waste materials as fillersin the production of plastic composites alleviate the shortage of wood resources, and can have the potential to start a natural fiber industry in countries where there are little or no wood resources left [6,7,8].…”

“…in wall plaster and concrete, due to their good insulation properties [11,12] but not reported to be exploited in the production of WPCs/NFCs. However, the utilizing of barley husksin the production of polypropylene composites has been studied, and improvements in mechanical properties have been observed [7].…”