Production of basalt/wood fiber reinforced polylactic acid hybrid biocomposites and investigation of performance features including insulation properties

Abstract

Environmental concerns of disposals of automotive, building, or packaging applications enforce researchers to find alternative green materials. Hybrid biocomposites, which consists of both natural/man‐made fibers and biopolymers, can be an alternative to glass fiber‐supported composites. On the other hand, heat and sound insulation are key properties for automotive and building industries and there is limited knowledge about insulation properties of biocomposites. In this study, we produced basalt/beech wood fiber reinforced polylactic acid (PLA) biocomposites by twin‐screw extruder, followed by compression molding. We investigated sound and heat insulation properties as well as mechanical and physical properties. Thermogravimetric analysis, Fourier transform infrared and scanning electron microscopy analyses were carried out for thermal, chemical, and morphological characterization of biocomposites, respectively. Analysis revealed that basalt/wood fiber support improved heat and sound insulation of biocomposites; however, water absorption properties reduced by natural fiber loading. Besides, both tensile and flexural strength of the biocomposites reduced by increasing natural fiber loading.

Controlled long-term sustained release of poly(lactic acid) composite microspheres with dual-responsive cellulose nanocrystals

“…The peaks at 3050–2850 cm −1 and 1300–1100 cm −1 correspond to C–H and C–O–C stretching vibrations, respectively. 29 Besides, the peaks at 1457 and 870 cm −1 were assigned to the bending vibration of –CH 3 and C–C in PLA, respectively. 30 Notably, the EDS spectra in Fig.…”

Enhanced mechanical properties, thermal behavior and foaming ability of PP‐g‐MAH modified PP/BF composites

“…It shows that the change of BF content has more significant effect on the bending performance. The uniformly dispersed BF forms a rigid skeleton that facilitates stress transfer between the fiber and matrix, 48 resulting in an improved enhancement effect. However, since the elongation of BF is very small, its addition to resin disrupts the continuity of the PP molecular chains, 37 which leads to an augment stiffness of PP/BF composite.…”

Application of sustainable treatments to fiber surface for performance improvement of elastomeric polyurethane reinforced with basalt fiber

“…Similar to storage modulus findings, extensions in Tan δ of EPU were found to be higher amounts for composites filled with ES-BF and ER-BF. Since the expansion in the width of Tan δ indicates the gaining damping behavior of the polymer, [69][70][71][72] it can be said that BF additions donated damping property for EPU regardless of the nature of the fiber surface layer.…”

“…The main reason for enhancement in the MFI parameter of EPU might due to the promotion of BF having a high aspect ratio along the melt-flow direction of polymer chains. [72][73][74][75][76] Composites involving surface-modified BF yielded higher MFI values compared to untreated BF equivalents which attributed to the formation of stronger adhesion of EPU to ER-BF and ES-BF with respect to unsized BF. The strong adhesion between phases thanks to the silane and epoxy layer on the BF surface resulted in the flowing of fibers forward with a higher flow rate.…”