Influence of Chemical Surface Modifications on Mechanical Properties of Combretum dolichopetalum Fibre - High Density Polyethylene (HDPE) Composites

Oladimeji, Azeez Taofik; Dominic, Onukwuli Okechukwu; Echeng, Walter Peter; Chukwudi, Menkiti Mathew

doi:10.52763/pjsir.phys.sci.61.1.2018.28.34

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…This table highlights fibres used in at least two instances across the reviewed documents. Other fibres that were used in only one study include African walnut shell (Nigeria), 85 ampelocissus cavicaulis (Nigeria), 86 cassava cortex (Nigeria), 87 chicken feathers (Morocco), 88 cissus populnea (Nigeria), 89 coffee husk (Ethiopia), 90 combretum dolichopetalum (Nigeria), 91 cyanara cardunculus L. (Algeria), 92 dioscorea alata (Nigeria), 93 diss grass (Algeria), 94 egg shell (Nigeria), 95 el retma (Algeria), 96 eucalyptus capsule (Morocco), 97 grapevine (Tunisia), 98 groundnut shell (Nigeria), 99 Mediterranean saltbush (Algeria), 100 Nacha–hibiscus (Ethiopia), 101 natural cork (Tunisia), 102 orange peels (Algeria), 103 posidonia oceanica (Tunisia), 104 raw pepper (Morocco), 105 reed fibres (Egypt), 106 screwpine (Mauritius), 107 sunflowers trimmings (Egypt), 108 teff straw (Ethiopia), 109 and triumfetta cordifolia (Cameroon) 110 …”

Section: Fibres Sourced From Africamentioning

confidence: 99%

Africa's natural fibres used in polymer composites: A systematic review

Nwankwo,

Mahachi,

Olukanni

et al. 2024

Polymer Composites

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Environmental concerns and the depletion of petroleum resources have spurred research into natural fibres as sustainable alternatives to synthetic fibres as the reinforcement phase in polymer composites. Given that the local availability of materials is a crucial component in the sustainability framework, there is a need to map out the fibres used to develop natural fibre composites across geographical regions to optimize local resource utilization. Through a systematic review of publications sourced from Scopus and Web of Science databases, this study examines the contributions made by Africa to develop green polymer composites. The bibliometric data from both databases were systematically merged, and bibliometric analysis was carried out to identify trends and relevant relationships and provide a more general insight into Africa's progress in the natural fibre polymer composite field. A meta‐analysis was then conducted to identify the natural fibres exclusively sourced from Africa that have been used to develop polymer composites. The study also discussed natural fibre classifications with respect to fibre type and form. Sisal, palm varieties (particularly date palm), alfa, jute and members of the Musaceae family (i.e., banana, plantain and enset) were found to be the most used African‐sourced fibres. This study is a step to creating a more extensive global natural fibre database that seeks to provide more precise knowledge, enhance research efficiency, and ensure the utilization of local materials in creating more sustainable composites.Highlights The use of local materials is a key component of sustainable development A natural fibre database can foster sustainability in the composite industry Egypt, Morocco, and Tunisia are leading Africa's composite research Research prioritizes composite material science over practical applications Sisal, date palm, alfa and jute are the most used natural fibres in Africa

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Section: Fibres Sourced From Africamentioning

confidence: 99%

Africa's natural fibres used in polymer composites: A systematic review

Nwankwo,

Mahachi,

Olukanni

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

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“…The sample was gripped at both ends of 100mm length by the grip of Instron Universal Tester model-3369. The impact strength was determined from tensile analysis in accordance with ASTM D638-22 [25] using equation (3) as described by Azeez and Onukwuli [26].…”

Section: Mechanical Properties Of Unsaturated Polyester Compositesmentioning

confidence: 99%

Optimization, Sodium Hydroxide and Plantain Fibres: Mechanical Properties of Unsaturated Polyester Composites for Transtibial Prosthetic Socket

Nwaiwu,

Ekezie,

Azeez

et al. 2024

KEM

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Low mechanical behaviors of natural fibres in the reinforcement of polymer composites have remain an issue of concern. This study is aimed at investigating the effect of NaOH treatment on the mechanical properties of plantain fiber for the transtibial prosthetic sockets made of polyester resin. Plantain fiber was extracted from the plantain bast using water retting techniques. The fibres were modified using alkaline treatment method of 5 – 25% for variable time of 30 to 150 minutes. It was optimized using 3-level Factorial design (3-LCD) of response surface methodology based on tensile properties of treated fibres. The polyester composites of plantain and glass fibers were prepared using hand-layup techniques. Instron Universal testing machine-3369 model was used to determine the tensile and impact properties of fibers and polyester composites. Rockwell hardness tester-RBHT/S-39 model was used to determine the hardness property. The optimum process conditions of 5 % NaOH for 119 minutes improved plantain fiber tensile strength, modulus, strain, energy, and extension by improved by 102.03, 208.07, 9.70, 210.52 and 205.73 %, respectively. The ultimate tensile strength and modulus was obtained at 10 and 12.5% fiber loading. The hardness and impact strength of NaOH modified unsaturated polyester composites was marginally more than 3.51 and 10.69% of glass fiber reinforced unsaturated composites, respectively, at 12.5% fiber loading. FTIR analysis revealed the improvement in mechanical properties. Thus, NaOH modified plantain fiber unsaturated polyester composites serves as a better alternative for making transtibial prosthetic socket.

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“…This disrupts the life cycle of recycled plastic to be used for new products with high specifications. Recycled plastics are certainly cheaper than virgin plastics, but they have low properties [24,25,26], are contaminated [22], and are only used for low-value products [4,20]. Therefore, a solution is needed for this problem.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties Improvement of Recycled Polypropylene with Material Value Conservation Schemes Using Virgin Plastic Blends

Gabriel

Nasrullah

2021

MSF

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Repetitive implementation of material value conservation (MVC) in plastic packaging may lead to good quality plastic waste and high acceptance for secondary recycling. This makes the obtained recycled plastic pellets has good quality and can be used as an alternative raw material for new products. However, treatments and processing in the recycling processes can lead to the degradation of material properties and disrupt the recycled plastics life cycle to be used for new products with high specifications. Recycled plastics are certainly cheaper than virgin plastics, but they have low properties, contaminated, and are only used for low-value products. Therefore, a solution is needed for this problem. This study proposed mixing recycled and virgin plastic pellets to improve recycled plastics whose optical properties have been subjected to quality degradation. A series of tests were carried out on specimens and tested according to the American Society for Testing and Materials (ASTM) method. The optical properties tested were transparency, gloss, and colour. This study revealed that optical properties had an increasing trend along with the large number of virgin plastic pellets added to the blends. The optimal composition was found in the 50:50 composition of virgin-recycled plastic pellets to the 70:30 composition of virgin-recycled plastic pellets. These findings can be useful in improving the optical properties of recycled plastics. In addition, the widespread implementation of MVC can improve the quality of plastic waste and strengthen its acceptance for secondary recycling.

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Influence of Chemical Surface Modifications on Mechanical Properties of Combretum dolichopetalum Fibre - High Density Polyethylene (HDPE) Composites

Cited by 5 publications

References 15 publications

Africa's natural fibres used in polymer composites: A systematic review

Africa's natural fibres used in polymer composites: A systematic review

Optimization, Sodium Hydroxide and Plantain Fibres: Mechanical Properties of Unsaturated Polyester Composites for Transtibial Prosthetic Socket

Optical Properties Improvement of Recycled Polypropylene with Material Value Conservation Schemes Using Virgin Plastic Blends

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