Influence of fiber surface treatment on the tribological properties of Calotropis gigantea plant fiber reinforced polymer composites

Abstract

Recent era witnessed a tremendous growth in utilization of plant fibers to make composite materials, and their industrial applications have multiplied many folds. All these utilizations were kindled by the advantageous features of the plant fibers and their potential to substitute the currently used synthetic fibers in almost all the applications. Current work falls in line with the abovementioned statements, and Calotropis gigantea fibers (CGFs) are reinforced with epoxy matrix to fabricate composite materials. The fiber surfaces were modified with sodium hydroxide (NaOH) and potassium permanganate (KMnO 4 ) solutions. The CGFs reinforced composites with epoxy matrix were fabricated with the aid of compression molding technique and the samples were subjected to wear tests. The effect of fiber surface modification over the tribological characteristics of these composites such as frictional force, coefficient of friction, and rate of wear was evaluated by varying the time of wear from 40 to 1040 s at an interval of 40 s. From the results, it is found that the weight loss varies between 0.0013 and 0.0018g. Scanning electron microscopy studies are also carried out to observe the surfaces of the samples before and after wear tests. Experimental results portrayed that NaOH treated CGF composites rendered better tribological behavior when compared with untreated and KMnO 4 treated CGF composites.

Vibrational analysis of glass/ramie fiber reinforced hybrid polymer composite

“…Due to that, the interfacial bonding between matrix material and fibers was enhanced. [33] The elimination of amorphous hemicellulose content from NF through alkali treatment increases crystallinity, which directly increases the fiber's mechanical properties. [34] Also, the alkali treatment enhances the NF's mechanical, structural, and adhesion characteristics and reduces the moisture absorption tendency.…”

Sustainable renewable energy generation: A case study based teeny review

“…Mixed-integer linear programming (MILP) is used in one such article to examine: (i) bi-directional electricity market operational capability of either an EV fleet having arrived at such an office complex under variation based drivers schedules, (ii) the influence of PV ambiguity upon that operating condition of either an energy management system derived from real actionable information, as well as (iii) the impact of PV ambiguity on EMS operating condition in comparison to a methodology that relies solely on predetermined Solar PV systems. Throughout all case reports, the expected total everyday expense for such method was much lower than in their correlating deterministic instances, which confirmed the importance of something like the probabilistic model Based mostly on a deterministic as well as stochastic technique, the output current here between micro grid's elements as well as the grid was demonstrated inside the referenced case study [25][26][27][28][29][30][31].…”

Influence of calcium carbonate fillers on pine fiber reinforced polyester composites

“…In some cases, the fillers are preferred as application-oriented materials like conductive materials, where these conductive fillers are formed a percolation network. [38][39][40] The effectiveness of fillers depends on different aspects like filler's size, orientation, shape, surface area, aspect ratio, and particles distribution inside the matrix. [41,42] Loading of these fillers over the optimum concentration in NFRCs resulted in agglomeration due to the existence of Van Der Waals force.…”