Mechanical and microstructural properties of expanded polyethylene powder/mica filled hybrid polystyrene composites

Adeniyi, Adewale George; Abdulkareem, Sulyman A.; Iwuozor, Kingsley O.; Abdulkareem, Maryam T.; Adeyanju, Comfort Abidemi; Emenike, Ebuka Chizitere; Ndagi, Mustapha; Akande, O.

doi:10.1080/15376494.2022.2059822

Cited by 41 publications

(11 citation statements)

References 41 publications

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“…The hydroxyl (OH) stretch of carboxylic acid was observed at 2653 and 2922 cm −1 . The peak of 3399 cm −1 was assigned to the carbon–hydrogen stretch of an alkyne functional group (CH) 61 …”

Section: Resultsmentioning

confidence: 99%

“…The source of silicon in the resin could be from the solvent used in preparing the resin or could have been embedded in the polystyrene material itself 48 . Other studies where polystyrene resin was cured at room temperature showed the presence of oxygen in combination with carbon and silicon 61 . The presence of oxygen has been shown to be linked to the presence of void spaces present within the material 61 .…”

Section: Resultsmentioning

confidence: 99%

“…The peak of 3399 cm À1 was assigned to the carbon-hydrogen stretch of an alkyne functional group ( C H). 61 The spectra of the fillers at 25% showed some properties of the filler and the matrix. When comparing the spectra of PBR 100 and PBR 75 CB 25 , some common peaks were observed, showing the transference of functional groups from the resin to the composite.…”

Section: Functional Group Determinationmentioning

confidence: 99%

“…48 Other studies where polystyrene resin was cured at room temperature showed the presence of oxygen in combination with carbon and silicon. 61 The presence of oxygen has been shown to be linked to the presence of void spaces present within the material. 61 It is expected that such void spaces would be eliminated by thermal curing, as was obtained.…”

Section: Elemental Analysismentioning

confidence: 99%

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Microstructural and thermal properties of thermally cured calcined cow bone/kaolin filled hybrid polystyrene composites

Adeniyi

Abdulkareem

Odimayomi

et al. 2023

Asia-Pacific J Chem Eng

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The advantages that plastic‐based composites provide over epoxy‐based composites have catalyzed interest in the former in recent years. Polystyrene, a common packaging plastic, has been used for the production of composites. However, its hydrophilicity and curing duration are issues that undermine its commercialization. In this study, two fillers, calcined cow bone and kaolin, were introduced into a polystyrene resin matrix in varying concentrations through the hand lay‐up method. The composites were thermally cured at a temperature of 200°C for 3 h, after which they were characterized for their thermal and microstructural properties. DSC analysis revealed that the presence of kaolin improved the thermal property of the composite more than cow bone. The FTIR results revealed that the filler(s) were incorporated into the matrix via chemical reactions, as evidenced by bond breakage and formation. EDX results confirmed the incorporation of the fillers, with carbon being the most dominant element in the composites. It showed that the cow bone introduced elements such as phosphorus and calcium, while the kaolin introduced elements such as silicon and aluminum to the composite. SEM micrographs showed the presence of good interfacial adhesion between the filler(s) and the matrix. This study has shown that thermal curing is a viable solution to the shortcomings of polystyrene‐based composites and their commercialization.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Functional Group Determinationmentioning

confidence: 99%

Section: Elemental Analysismentioning

confidence: 99%

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Microstructural and thermal properties of thermally cured calcined cow bone/kaolin filled hybrid polystyrene composites

Adeniyi

Abdulkareem

Odimayomi

et al. 2023

Asia-Pacific J Chem Eng

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“…The DSC method was applied as an additional method for identifying the nature of the polymer matrix. The melting thermograms of REF 1, TEST 1, and TEST 2 had one melting peak with a temperature of ~123-127°C, which also indicated that these bags were made of linear low-density poly(ethylene) (HDPE) 17 .…”

Section: Characteristics Of the Bags' Samplesmentioning

confidence: 96%

Biodegradation in Soil of Commercial Plastic Bags Labelled as “Biodegradable”

et al. 2023

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Biodegradability of five commercial plastic bags labelled as "biodegradable" and two referent materials were studied by a soil test for three months. As a control experiment, for studying abiotic degradation under the climatic impact (ultraviolet, temperature, and moisture) a test in a weatherometer was performed. The changes in bag samples after tests were detected by optical microscopy, Fouriertransform infrared spectroscopy, differential scanning calorimetry, and tensile testing. It was found that all the bags may be separated into two groups: based on polyesters and based on polyolefins with oxo-additives. The second group demonstrated an ability to oxidation under UV radiation. The content of chalk filler provided a mass loss of the samples under soil and climatic tests due to its washing out. Three samples on the polyester basis filled with starch (the first group) had different compositions (polymers in the matrix were different). They showed a high biodegradability under soil conditions: mass loss was 14-21%, tensile strength decreased by more than 43%, and the surface was covered by the mycelium net. However, according to FTIR-spectroscopy, at the initial stage only starch filler biodegraded intensively, while polymer matrix was stable.

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

Adeniyi,

Abdulkareem,

Amoloye

et al. 2024

Asia-Pacific J Chem Eng

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The study presents the development and characterization of rubberized fibrillated polystyrene composites using recycled rubber tires and pawpaw fibres. The composites were prepared by varying the proportions of rubber and fibre. FTIR, SEM, EDX and hardness testing were used to characterize the composites. FTIR spectroscopy revealed distinct peaks, including hydroxyl and amine, but with a notable absence of the O‐H group in nearly all composites, affirming their durability and potential suitability for applications in moist environments. SEM results showed that the introduction of rubber tires did not significantly alter the smooth and fine‐grained nature of the polystyrene resin, whereas the inclusion of pawpaw fibre resulted in an irregular and coarse surface. Mechanical testing demonstrated that the hardness of the composites was dependent on the composition, with rubber‐rich composites being more flexible and pawpaw‐fibre‐rich composites exhibiting greater rigidity.

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Mechanical and microstructural properties of expanded polyethylene powder/mica filled hybrid polystyrene composites

Cited by 41 publications

References 41 publications

Microstructural and thermal properties of thermally cured calcined cow bone/kaolin filled hybrid polystyrene composites

Microstructural and thermal properties of thermally cured calcined cow bone/kaolin filled hybrid polystyrene composites

Biodegradation in Soil of Commercial Plastic Bags Labelled as “Biodegradable”

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

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