Mechanical characteristics of groundnut shell particle reinforced polylactide nano fibre

Abstract

The PLA-groundnut shell solution is electrospun to produce nanocomposite fibre. The spinneret containing the composite solution was placed 24.7 cm away from the aluminium collector, tilted at an angle of 30 °, and the solution flow rate kept at 1 mL/min. Groundnut Shell particle (GSP) weight fraction used was varied from 3 -8 wt. %. Particle reinforced nanofibres were formed on the collector from the composite solution at 26 kV. These nanofibres were subjected to tensile test and the result indicates that at 6 wt. % untreated GSP reinforced fibre possessed the best tensile stiffness of 24.62 MPa. This corresponds to 2.201 % increase in Modulus of Elasticity over the unreinforced PLA (1.07 MPa). The 7 wt. % treated GSP fibre showed the least stiffness (0.33 MPa), which is 69 % reduction over that of unreinforced fibre. PLA fibre reinforced with 5 wt. % untreated GSP displayed best blend of properties over the unreinforced with increase of 286 % (4.43 x 10 -4 HB), 1,502 % (1.07 MPa), 286 % (0.22 MPa), 6.8 % (0.05 J) and 1,081 % (~ 0.15 MPa) in hardness, stiffness, UTS, energy at break and stress at break respectively. However, ductility decreased by ~33.3 % when compared to the unreinforced (18.27). The 5 wt. % untreated GSP PLA reinforced fibre showed the highest UTS (0.855 MPa). The micrographs showed beads on reinforced fibres, while the virgin PLA showed no beads.

Electrospun porous bio-fibre mat based on polylactide/natural fibre particles

“…Chen and Liu (2008) also obtained lower tensile strength at the same filler weight fraction using cellulose nanocrystals soybean protein fibre. Results obtained from this study are found superior to our earlier report on palm fruit bunch and groundnut shell filled electrospun fibres (Adeosun, Akpan, Gbenebor, Peter, & Olaleye, 2016b;Adeosun, Taiwo, et al, 2016c). This improved result is attributed to the effect of reinforcement particles on the fibres and the structural stability imparted through synergy between process and material parameters.…”

“…In our earlier studies it was shown that controlling the solution concentration leads to control of the fibre diameter and surface morphology (Adeosun, Akpan, Gbenebor, Peter, & Olaleye, 2016a). In another study, it was also shown that addition of particles can lead to the formation of porous fibre network structure (Adeosun, Akpan, Gbenebor, Peter, & Olaleye, 2016b;Adeosun, Taiwo, et al, 2016c). These porous materials are capable of absorbing water and other solvents making them a potential for application in drug delivery applications (Adeosun, Akpan, Gbenebor, Peter, & Olaleye, 2016b).…”

Carbon Nanotube Reinforced Natural Rubber Nanocomposite for Anthropomorphic Prosthetic Foot Purpose

“…In keeping with an earlier report by Adeosun et al . 16 , the nanocomposite with 3 phr showed better filler distribution and hence better crystalinity and cross-links; resulting in improved modulus. This is evident at different percent elongation reported in Fig.…”

Development and characterization of collagen-based electrospun scaffolds containing silver sulphadiazine and Aspalathus linearis extract for potential wound healing applications

“…2b). The poor strength exhibited by unreinforced PLA could be attributed to poor interfacial bonding caused by the presence of non-cellulose and impurity [33]. The Elastic modulus of scaffolds revealed that incorporating 0.75 g Ag + S and 0.05% w/w A. linearis (EF2) to PLA solution culminated in a nanofiber with the superlative stiffness of 2.11 GPa, highest compared to all fabricated nanofibers (Fig.…”

“…The addition of 1 g Ag + S collagen and 0.025% w/w AL (EF 1) improved PLA's ductility to a maximum magnitude of 39.8%, hence showing that reinforcements had improved interfacial adhesion at the matrix interface. This restricts easy glide of the filler particles over the matrix giving rise to higher ductility [33]. Fig.…”