Morphological, Microstructure, Tensile and Water-Sorption Characteristics of Surface Modified Kenaf Fibre for Sustainable Biocomposite Reinforcement

Ogunbode, Ezekiel Babatunde; Nyakuma, Bemgba Bevan; Lawal, Temitope A.; Yatim, Jamaludin Mohamad; Abdul, Aliyu; Ayoosu, Moses Iorakaa

doi:10.1080/15440478.2021.1944430

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…Such a reality demonstrates an opportunity for reconfiguration of the perceptions of individuals about waste through community engagement and workshops with stakeholders. Cluster 3 – blue colour – “cellulose and agro-based materials” includes green manufacturing, waste treatment, nanocomposite cellulose (Caschera et al , 2020), cross-laminated secondary timber (Rose et al ,2018), Kenaf fibres, biofibres and biodegradable materials (Ogunbode et al , 2021). These authors seem to be tapping into the knowledge that Africa is largely agro-based, which presents a potential for innovative agro-based construction materials (Caschera et al , 2020).…”

Section: Discussionmentioning

confidence: 99%

Shaping circular economy in the built environment in Africa. A bibliometric analysis

Mhlanga

Haupt

Loggia³

2022

JEDT

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Purpose This paper aims to explore the intellectual structure shaping the circular economy (CE) discourse within the built environment in Africa. Design/methodology/approach The study adopted a bibliometric analysis approach to explore the intellectual structure of CE in the built environment in Africa. The authors collected 31 papers published between 2005 and 2021 from the Scopus database and used VOSviewer for data analysis. Findings The findings show that there are six clusters shaping the intellectual structure: demolition, material recovery and reuse; waste as a resource; cellulose and agro-based materials; resilience and low-carbon footprint; recycling materials; and the fourth industrial revolution. The two most cited scholars had three publications each, while the top journal was Resources, Conservation and Recycling. The dominant concepts included CE, sustainability, alternative materials, waste management, lifecycle, demolition and climate change. The study concludes that there is low CE research output in Africa, which implies that the concept is either novel or facing resistance. Research limitations/implications The data were drawn from one database, Scopus; hence, adoption of alternative databases such as Web of Science, Google Scholar and Dimensions could potentially have yielded a higher number of articles for analysis which potentially would result in different conclusions on the subject understudy. Originality/value This study made a significant contribution by articulating the CE intellectual structure in the built environment, identified prominent scholars and academic platforms responsible for promoting circularity in Africa.

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Section: Discussionmentioning

confidence: 99%

Shaping circular economy in the built environment in Africa. A bibliometric analysis

Mhlanga

Haupt

Loggia³

2022

JEDT

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“…By replicating the structure of natural fibers and utilizing biopolymers derived from renewable sources, biocomposites are now poised to be incorporated into everyday consumer products. 39,40 However, despite the numerous advantages associated with natural fibers, such as their widespread availability, non-toxic nature, combustibility, and biodegradability, [41][42][43][44][45] their practical utilization faces challenges arising from variations in quality, the requirement for low processing temperatures, and increased moisture absorption. 46 In response to these limitations, researchers have dedicated significant efforts to the functionalization of natural fibers, with the goal of creating advanced biopolymer composites strengthened by natural fibers.…”

Section: Biopolymers: Transforming Drug Delivery and Tissue Engineeri...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sustainable natural biopolymers for biomedical applications

Monia

2023

Journal of Thermoplastic Composite Materials

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Biopolymers are materials specifically engineered to interact with biological systems. They can be derived from either natural or synthetic sources, depending on the biological resources used or the manufacturing process employed. Over recent decades, these materials have gained significant popularity within the medical field due to their remarkable attributes such as biodegradability, bioactivity, and compatibility with human tissue. One notable application is their use as scaffolds for bone regeneration. Biopolymers, being renewable biomaterials, provide opportunities for continuous manufacturing and technological progress across various industries. These biomaterials have demonstrated great promise in medical sectors, including nerve regeneration and the production of surgical devices. Additionally, their versatility extends to non-biomedical applications, like food packaging. This paper aims to provide a comprehensive overview of different biopolymers, elucidating their properties, showcasing their latest applications, and delving into the state-of-the-art manufacturing technologies used in their production. Special emphasis is placed on their suitability as bone tissue repair and regeneration scaffolds, owing to their unique properties, which render them an ideal choice for this specific application.

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“…This preference is primarily attributable to their ready availability in nature, distinctive microstructure, elevated tensile strength, and the minimal energy demands associated with their extraction and processing [24,25]. Nevertheless, when compared to other natural fibres, Kenaf-based fibres demonstrate relatively superior physical and mechanical properties and exhibit a simpler dispersion process in cement-based composites [26,27]. Shotcrete, also known as (trademark) Gunite, is sprayed concrete or mortar [28].…”

Section: Introductionmentioning

confidence: 99%

The pioneer of intelligent and sustainable construction in tunnel shotcrete applications: a comprehensive experimental and numerical study on a self-sensing and self-heating green cement-based composite

Abedi,

Gulisano,

Han

et al. 2024

Meas. Sci. Technol.

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In this study, a self-sensing and self-heating natural fibre-reinforced cementitious composite for the shotcrete technique was developed using Kenaf fibres. For this purpose, a series of Kenaf fibre concentrations were subjected to initial chemical treatment, followed by integration into the cement-based composite containing hybrid carbon nanotubes (CNT) and graphene nanoplatelets (GNP). The investigation encompassed an examination of mechanical, microstructural, sensing, and joule heating performances of the environmentally friendly shotcrete mixture, with subsequent comparisons drawn against a counterpart blend featuring a conventionally synthesized polypropylene (PP) fibre. Following the experimental phase, a comprehensive 3D nonlinear finite difference (3D NLFD) model of an urban twin road tunnel, completed with all relevant components, was meticulously formulated using the FLAC3D (fast lagrangian analysis of continua in 3 dimensions) code. This model was subjected to rigorous validation procedures. The performances of this green shotcrete mixture as the lining of the inner shell of the tunnel were assessed comparatively using this 3D numerical model under static and dynamic loading. The twin tunnel was subjected to a harmonic seismic load as a dynamic load with a duration of 15 s. The laboratory findings showed a reduction in the composite sensing and heating potentials in both cases of Kenaf and PP fibre reinforcement. Incorporating a specific quantity of fibre yields a substantial enhancement in both the mechanical characteristics and microstructural attributes of the composite. An analysis of digital image correlation demonstrated that Kenaf fibres were highly effective in controlling cracks in cement-based composites. Furthermore, based on the static and dynamic 3DNLFD analysis, this green cement-based composite demonstrated its potential for shotcrete applications as the lining of the inner shell of the tunnel. This study opens an appropriate perspective on the extensive and competent contribution of natural fibres for multifunctional sustainable, reliable and affordable cement-based composite developments for today’s world.

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Morphological, Microstructure, Tensile and Water-Sorption Characteristics of Surface Modified Kenaf Fibre for Sustainable Biocomposite Reinforcement

Cited by 10 publications

References 39 publications

Shaping circular economy in the built environment in Africa. A bibliometric analysis

Shaping circular economy in the built environment in Africa. A bibliometric analysis

Sustainable natural biopolymers for biomedical applications

The pioneer of intelligent and sustainable construction in tunnel shotcrete applications: a comprehensive experimental and numerical study on a self-sensing and self-heating green cement-based composite

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