Development of Thermoplastic Composite Tube from HDPE/Barley Straw Fibers Using Extrusion Method

Abstract

This paper was devoted to the technological process of manufacturing a biocomposites tube made of low-density polyethylene and barley straw fibers. 50% of HDPE, 42% barley straw, 5% of shungite (mineral filler), 2% Maleid F (N, N-metaphenylenediamine) as coupling agent, and 1% Hexol CLA as lubricant were pre-mixed before compounding. The compounding of the raw materials was carried out on a co-rotating twin-screw extruder. The resulting granules were fed into the single screw extruder to obtain thermoplastic composite tubes. The temperature regime for the HDPE/barley straw composite processing was in the range of 145-160 °C and the screw rotation speed was 50 rpm. The tensile strength and modulus were found to be 27.7 MPa and 1687 MPa, respectively. The water absorption (24-h) and density of the specimens were 1.43% and 1.158 g/cm3, respectively. Based on the findings obtained from the present study, it can be said that the barley straw can be efficiently used in the production of tube formed HDPE composites.

Effect of content and particle size of used beverage carton pieces on the properties of HDPE composites

“…However, the effect of particle size of the used beverage cartons was not investigated. Previous studies reported that particle size of filler affects the mechanical properties of the polymer composites (Fu et al 2008;Aldousiri et al 2013;Deepak et al 2019;Delviawan et al 2019;Aranda-García et al 2020;Hubbe and Grigsby 2020;Sinha et al 2020;Kuzmin et al 2022).…”