Recycling of used polyethylene through solvent blending of plasticized polyhydroxybutyrate and its degradation potential

Babaniyi, Raphael Babafemi; Afolabi, Femi Johnson; Obagunwa, Monday Peter

doi:10.1016/j.jcomc.2020.100021

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…This process involves the cleavage of C-O and CP%O bonds, along with the breakdown of crystalline regions. These results establish a similar pattern obtained during the soil degradation study by Babaniyi et al, 47 it was noted that weight loss escalated as the duration extended from 30 to 90 days. In contrast, in the slurry-based degradation study, both the sizes and weights of the composite experienced reductions by the conclusion of the 21-day investigation.…”

Section: Discussionsupporting

confidence: 91%

Sustainable Synthesis of Biopolymer Polyhydroxybutyrate (PHB) from Agro-residue by Brevibacterium casei with Emphasis on Degradation Analysis

Rathna,

Kulandhaivel

2024

J. Pure Appl. Microbiol.

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The Polyhydroxybutyrate (PHB) polymer is a biodegradable microbial polyester that is intracellularly accruing due to the depletion of nitrogen and phosphorous resources and an increase in carbon supply. As part of this research investigation, Sudan Black B staining, fermentation, chloroform-sodium hypochlorite solvent-based extraction, and characterization of extracted PHB were used to isolate and identify organisms capable of producing PHB. Brevibacterium casei (OQ519751) was used to synthesize PHB biopolymer from agro-residues (orange peel, mangosteen peel, sugarcane bagasse, water hyacinth, and jackfruit peel). Using the Response Surface Methodology (RSM) and the Central Composite Design (CCD) has proven to be highly effective for optimizing PHB synthesis. The optimal conditions determined through RSM allowed Brevibacterium casei to produce significant amounts of PHB when compared to an unoptimized medium. The model demonstrated statistical significance, as indicated by the F-value of 19.96 with an associated p-value of <0.0001. Furthermore, with an optimized pH level of 7, temperature of 37°C, and yeast extract as the nitrogen source, the carbon source water hyacinth was found to synthesize an enhanced quantity of a PHB yield of 1.29 g/L from 2.2 g/L of dry biomass (58.63%). PHB characterization was done with the aid of FTIR (Fourier-transform infrared spectroscopy), XRD (X-ray diffraction), and TGA (Thermogravimetric analysis) analysis. The degradation study of PHB films was performed by soil burial method and morphological changes were scrutinized by SEM analysis. The results reveal that utilizing water hyacinth as a feedstock employs an enhanced production of PHB. This is the first report to synthesize maximum yield of PHB from Brevibacterium casei using water hyacinth as a substrate for production.

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Section: Discussionsupporting

confidence: 91%

Sustainable Synthesis of Biopolymer Polyhydroxybutyrate (PHB) from Agro-residue by Brevibacterium casei with Emphasis on Degradation Analysis

Rathna,

Kulandhaivel

2024

J. Pure Appl. Microbiol.

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“…These results were expected and can be explained by the obtained blends being more brittle due to the combined rigid character of PBS. Babaniyi et al [ 58 ] demonstrated that the modulus of the used polyethylene (UPE)/polyhydroxybutyrate (PHB) was higher in line with PHB content, which was caused by the rigidity of PHB. The same result (2040 MPa) was observed in the case of HDPE/PLA (70/30) compared to the pure HDPE (890 MPa) [ 59 ] and LDPE/PLA blend (70/30), which presented a doubled value (420 MPa) with respect to the pure LDPE (200 MPa) [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

et al. 2023

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It is of significant concern that the buildup of non-biodegradable plastic waste in the environment may result in long-term issues with the environment, the economy and waste management. In this study, low-density polyethylene (LDPE) was compounded with different contents of poly(butylene succinate) (PBS) at 10–50 wt.%, to evaluate the potential of replacing commercial plastics with a biodegradable renewable polymer, PBS for packaging applications. The morphological, mechanical and thermal properties of the LDPE/PBS blends were examined in relation to the effect of polyethylene–graft–maleic anhydride (PE–g–MA) as a compatibilizer. LDPE/PBS/PE–g–MA blends were fabricated via the melt blending method using an internal mixer and then were compression molded into test samples. The presence of LDPE, PBS and PE–g–MA individually in the matrix for each blend presented physical interaction between the constituents, as shown by Fourier-transform infrared spectroscopy (FTIR). The morphology of LDPE/PBS/PE–g–MA blends showed improved compatibility and homogeneity between the LDPE matrix and PBS phase. Compatibilized LDPE/PBS blends showed an improvement in the tensile strength, with 5 phr of compatibilizer providing the optimal content. The thermal stability of LDPE/PBS blends decreased with higher PBS content and the thermal stability of compatibilized blends was higher in contrast to the uncompatibilized blends. Therefore, our research demonstrated that the partial substitution of LDPE with a biodegradable PBS and the incorporation of the PE–g–MA compatibilizer could develop an innovative blend with improved structural, mechanical and thermal properties.

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Biosorption of dyes in wastewater using chitosan/polyethylene nanoparticle as adsorbent

Adelaja,

Babaniyi,

Aransiola

et al. 2024

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Recycling of used polyethylene through solvent blending of plasticized polyhydroxybutyrate and its degradation potential

Cited by 5 publications

References 25 publications

Sustainable Synthesis of Biopolymer Polyhydroxybutyrate (PHB) from Agro-residue by Brevibacterium casei with Emphasis on Degradation Analysis

Sustainable Synthesis of Biopolymer Polyhydroxybutyrate (PHB) from Agro-residue by Brevibacterium casei with Emphasis on Degradation Analysis

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

Biosorption of dyes in wastewater using chitosan/polyethylene nanoparticle as adsorbent

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