Effects of corona discharge treatment on surface and mechanical properties of Aloe Vera fibers

Hassani, Fahd Oudrhiri; Merbahi, Nofel; Oushabi, A.; Elfadili, M.H.; Kammouni, Abdelkhalek; Oueldna, Nouredine

doi:10.1016/j.matpr.2019.07.527

Cited by 25 publications

(8 citation statements)

References 24 publications

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“…In plasma treatment, the fiber surface is exposed to high-voltage conditions to ionize the gas and use it as a plasma under vacuum conditions [79], thus improving the surface resistance of the fiber cross-linking the surface by introducing free radicals [9] managing to increase the surface tension of nonporous substrates. Corona treatment carried out in a discharge reactor modifies the oxidation of the fiber surface to improve the interface between the hydrophilic fiber and the hydrophobic matrix [80] and improves mechanical resistance by changing the surface energy and acidity of the fiber surface [86].…”

Section: Physical Treatmentsmentioning

confidence: 99%

Recycling of Residual Polymers Reinforced with Natural Fibers as a Sustainable Alternative: A Review

2021

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The latest advances in green alternatives are being addressed with bio-based solutions, with uses and applications in new areas due to their wide potential, low cost, lightness, renewability, biodegradability, impact toughness, fatigue resistance, and other specific properties. Natural fibers are sustainable materials that have led researchers to test their viability as alternative reinforcements in residual polymers to meet required engineering specifications; therefore, it is essential to continue making progress in replacing conventional materials. This review is expected to provide an overview of the current scopes and future prospects of biocomposites from polymers reinforced with natural fibers with a focus on the following: i. recycling of residual polymers; ii. available natural fibers and their components in the context of engineering applications; iii. the behavior of the structural modifications of the natural fibers with the physical and chemical treatments in the matrix interaction as reinforcements of the residual polymers; and iv. applications for the development of innovative, efficient, and sustainable solutions for successful, environmentally responsible products.

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Section: Physical Treatmentsmentioning

confidence: 99%

Recycling of Residual Polymers Reinforced with Natural Fibers as a Sustainable Alternative: A Review

2021

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“…Corona treatment and the addition of chitosan caused a significant increase in the percentages of oxygen (from 12.11 ± 0.25% to 27.68 ± 0.29%) and nitrogen (from 1.62 ± 0.32% to 4.39 ± 0.24%); see Table 2 . Such a trend was expected, as the functionalization of materials with oxygen-activated groups using air corona treatment has been widely reported [ 24 , 25 ]. Additionally, the hydroxyl and amino groups of chitosan on each unit also contributed to the increases in oxygen and nitrogen content [ 26 ].…”

Section: Resultsmentioning

confidence: 89%

Antibacterial Bio-Nanocomposite Textile Material Produced from Natural Resources

et al. 2022

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Growing demand for sustainable and green technologies has turned industries and research toward the more efficient utilization of natural and renewable resources. In an effort to tackle this issue, we developed an antibacterial textile nanocomposite material based on cotton and peat fibers with immobilized Cu-based nanostructures. In order to overcome poor wettability and affinity for Cu2+-ions, the substrate was activated by corona discharge and coated with the biopolymer chitosan before the in situ synthesis of nanostructures. Field emission scanning electron microscopy (FESEM) images show that the application of gallic or ascorbic acid as green reducing agents resulted in the formation of Cu-based nanosheets and mostly spherical nanoparticles, respectively. X-ray photoelectron spectroscopy (XPS) analysis revealed that the formed nanostructures consisted of Cu2O and CuO. A higher-concentration precursor solution led to higher copper content in the nanocomposites, independent of the reducing agent and chitosan deacetylation degree. Most of the synthesized nanocomposites provided maximum reduction of the bacteria Escherichia coli and Staphylococcus aureus. A combined modification using chitosan with a higher deacetylation degree, a 1 mM solution of CuSO4 solution, and gallic acid resulted in an optimal textile nanocomposite with strong antibacterial activity and moderate Cu2+-ion release in physiological solutions. Finally, the Cu-based nanostructures partially suppressed the biodegradation of the textile nanocomposite in soil.

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“…43,136,137 Fiber modification method includes different types of physical and chemical treatments, while matrices are modified by various chemical treatments. Corona treatment, 138,139 plasma treatment, 140–142 ultraviolet (UV) treatment, 143–145 and fiber beating 146,147 are some of the frequently used physical treatments. Physical treatments are applied on fibers to enhance the bonding with matrices by changing their surface properties such as wettability, cleanliness, polarity, surface energy, and surface area.…”

Section: Factors Influencing the Mechanical Propertiesmentioning

confidence: 99%

Green composites from natural fibers and biopolymers: A review on processing, properties, and applications

Islam

Sarker

Rahman

et al. 2022

Journal of Reinforced Plastics and Composites

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At present, environmental sustainability is a big concern due to the limited resources and the adverse impacts of petroleum-based materials. Green composites (GCs) attracted intensive research interest for the last few decades from academicians, scientists, researchers, and practitioners both from the ecological and economic point of view and are presently being considered as one of the most promising research domains. Composites produced from renewable and/or natural resources thanks to their biodegradability and sustainability properties are envisaged as the next-generation materials to meet the growing demand worldwide. GCs are intensively investigated due to their multifunctional properties and utilization in a wide variety of fields including automobile, marine, aerospace, structural and infrastructural applications, packaging, electronics industry, sports, and biomedical applications. They also show potentials to replace the expensive as well as non-degradable petroleum-based composites. After the shelf life, it can be disposed of easily without harming the environment. The processing techniques, properties, and applications of green composites are comprehensively assessed in this review article. The feasibility of the naturally available fiber and polymers for green composites are also discussed highlighting the existing challenges with possible suggestions. It was intended to present a full overview of biodegradable polymer composites reinforced with natural fiber, as well as the necessary future directions for the concerned researchers.

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Effects of corona discharge treatment on surface and mechanical properties of Aloe Vera fibers

Cited by 25 publications

References 24 publications

Recycling of Residual Polymers Reinforced with Natural Fibers as a Sustainable Alternative: A Review

Recycling of Residual Polymers Reinforced with Natural Fibers as a Sustainable Alternative: A Review

Antibacterial Bio-Nanocomposite Textile Material Produced from Natural Resources

Green composites from natural fibers and biopolymers: A review on processing, properties, and applications

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