Influence of structural physiognomies of pawpaw fiber–glass fiber hybrid–based green composites on mechanical properties and biodegradation potential of epoxy composites

Abstract

The demand for durable and sustainable eco-friendly materials in recent times has caused many researchers to consider the use of plant fibers in composite development. In this research, the suitability of treated pawpaw fiber as a substitute for glass fiber was considered. The pawpaw fiber was extracted from the plant stem by dew retting and treated before been incorporated into the epoxy matrix. Two distinct fiber structures in linear and network forms were identified, separated, and used for the development of the composites. The composites were produced by incorporating a fixed amount of pawpaw fiber with a varied amount of glass fiber within 3–15 wt% in epoxy-based polymer matrix after which mechanical and biodegradation tests were carried out on the developed samples. Fractured surface morphology was also observed using a scanning electron microscope. The results revealed that the fiber structures influence the properties of the material. While mechanical properties were mostly enhanced by treated linear structure pawpaw fiber, biodegradation was highly promoted by treated network structure pawpaw fiber. Tensile (except for strain), hardness, and flexural properties were enhanced by the linear-structured treated pawpaw fiber, while biodegradability, impact, and tensile strain were improved by the network-structured treated pawpaw fiber compared to the control sample.

Development and characterization of moringa oleifera fruit waste pod derived particulate cellulosic reinforced epoxy bio-composites for structural applications

“…Several natural fibres have been researched to improve the mechanical properties of reinforced and filled polymer bio-composites, including jute, banana, sisal, bagasse, bamboo, grass, flax, lufa, coir, cotton, wool, hair, feather, and many more [ 9 ]. However, recently in Nigeria, the more readily available natural fibers like pawpaw [ 10 ], banana, plantain, coconut, and sisal [ 2 , 11 ] from plants are being researched. The results from the studies revealed a potential use of these cellulosic fibers as reinforcement materials in polymers.…”

Smart Hydrogels for Tissue Regeneration

“…Thin films, membranes, and fibers with 2D structures offer sufficient oxygen permeability, water resistance, and toughness. [ 112 ] On the other hand, sponges, foams, and hydrogels with 3D networks and porous structures can absorb large amounts of exudates, maintain a moist environment, and serve as vehicles for bioactive substances and cells. As such, the specific morphology of the biomaterials can determine their range of downstream applications.…”

Balancing strength and sustainability: Incorporating recycled tyres and pawpaw fibre in polystyrene composites

“…19 However, despite this abundance, pawpaw pant natural fibre is seldom employed as a reinforcing agent for lightweight materials, and there are limited studies on this subject in the existing literature. 20,21 Natural fibres, like pawpaw fibre, present numerous benefits, including their renewable nature, ability to biodegrade and lightweight properties. 22,23 Additionally, their accessibility and costeffectiveness render them an appealing substitute for synthetic reinforcements.…”