Rotational molding parameters of wood-plastic composite materials made of recycled high density polyethylene and wood particles

Arribasplata-Seguin, Adan; Quispe-Dominguez, Roger; Tupia-Anticona, Walter; Sullcahuamán, Julio Acosta

doi:10.1016/j.compositesb.2021.108876

Cited by 26 publications

(26 citation statements)

References 27 publications

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“…The work initiates with the characterization of pine wood sawdust, the production of polymer/wood composites and finally a full characterization of products, from its morphological and mechanical performance to aesthetics, namely, color, visual appearance and defects. This study is in line with other recently published articles in the finding of new materials for rotational molding [ 9 , 25 , 32 , 45 , 46 ].…”

Section: Introductionsupporting

confidence: 92%

“…Therefore, molding parameters must be carefully selected to avoid wood thermal degradation. Furthermore, the poor adhesion between polymers and natural fibers and the reduction of the sintering capability of the composite materials, that increases part porosity, are responsible for low mechanical properties [ 31 , 32 ]. Some strategies such as chemical treatment of the fibers and the use of a coupling agent were often used to improve the adhesion of the interface between the polymer matrix and the lignocellulosic filler [ 9 , 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

“…In case of no treatment for natural and ecological featuring, very recent study from Arribasplata-Seguin et al [ 32 ] shows the need for careful selection of processing parameters. Only with that the sintering process of wood plastic composites is improved with determinant effects on the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…For high fiber contents, fiber wettability by the polymer is difficult and fiber agglomeration may occur. The wood granulometry is also discussed by few authors, indicating better composite performance for small particle sizes, namely maple wood fiber size of 125–250 µm [ 39 ] and pine particles between 297–500 μm [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies are found in literature dedicated to rotational molding using lignocellulosic materials [ 19 ]. Some of these used the following organic materials: jute, sisal and cabuya [ 31 , 40 , 41 ], wood fiber [ 32 , 40 ], flax [ 18 , 41 ], banana and abaca [ 42 ], agave [ 25 , 33 , 35 , 43 ], pine wood [ 32 , 33 ], coir [ 33 ], maple wood [ 18 , 37 , 38 , 39 , 44 ], hemp [ 18 , 34 ], cork [ 45 ] and bamboo [ 46 ]. Despite the variety of studies on WPC for rotational molding, there are still few real successful applications using these materials.…”

Section: Introductionmentioning

confidence: 99%

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Thermal, Mechanical, Morphological and Aesthetical Properties of Rotational Molding PE/Pine Wood Sawdust Composites

2022

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This research addresses the importance of pine wood sawdust granulometry on the processing of medium-density polyethylene (MDPE)/wood composites by rotational molding and its effects on the morphological, mechanical and aesthetical properties of parts, aiming to contribute for the development of sustainable wood polymer composites (WPC) for rotational molding applications. Pine wood sawdust was sieved (<150, 150, 300, 500, 710, >1000 µm) and analyzed for its physical, morphological and thermal characteristics. Rotational molded parts were produced with matrix/wood ratios from 90/10 to 70/30 wt% considering different wood granulometries. As a natural material, wood changed its color during processing. Granulometries below 500 µm presented better sintering, homogeneity and less part defects. Furthermore, 300–500 µm favored the impact resistance (1316 N), as irregular brick-shaped wood was able to anchor to PE despite the weak interfacial adhesion observed. The increase of wood content from 10 to 30% reduced the impact properties by 40%, as a result of a highly porous structure formed, revealing sintering difficulties during processing. WPC parts of differentiated aesthetics and functionalities were achieved by rotational molding. A clear relationship between wood granulometry and WPC processing, structure and properties was identified.

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Section: Introductionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal, Mechanical, Morphological and Aesthetical Properties of Rotational Molding PE/Pine Wood Sawdust Composites

2022

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Structure–property correlation assessment of LLDPE‐based biocomposites with Azadirachta Indica wood flour

Yadav,

Ramkumar,

Parwani

2024

J of Applied Polymer Sci

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This research explores the development of new composite material by integrating Azadirachta Indica (AI) with LLDPE to create wood‐plastic composites using the rotational molding process. By examining various proportions of AI wood flour blended with LLDPE, we investigated their impact on mechanical and physical properties. Our tests elucidate a clear correlation between mechanical properties and composite morphologies. Despite identical molding conditions, higher wood particle concentrations reduced mechanical properties compared to lower concentrations. Remarkably, a 12% wood content emerges as optimal, yielding a tensile modulus of 3.69 MPa and a flexural modulus of 468.5 MPa, with an acceptable reduction of 11% density and 13% porosity versus pure LLDPE. Additionally, we observed declines in tensile strength, impact strength, and hardness by up to 23%, 62%, and 11%, respectively, compared to neat LLDPE. Natural fillers enhance aesthetics, making these materials ideal for consumer products like garden equipment and furniture accessories.

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Machine learning‐based prediction of mechanical and thermal properties of nickel/cobalt/ferrous and dried leaves fiber‐reinforced polymer hybrid composites

Mohit,

Sanjay,

Siengchin

et al. 2023

Polymer Composites

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Dried leaves are the outstanding origin of cellulosic plant matter, and it is securing reputation as a renewable resource. Dried leaves fiber is suggested to possess the capability to substitute synthetic fibers in polymer laminates as a reinforcing component. The novelty of the present study reveals the effect of dried leaves fiber, cobalt, nickel, and ferrous reinforcement on the physical, mechanical, and thermal characteristics of epoxy, vinyl‐ester, and polyester polymers using artificial neural network (ANN) technique. These composites were fabricated using ultrasonication bath‐assisted wet layup method under ambient condition. The outcomes of this research exhibit that the dried leaves‐cobalt fillers reinforced in all three polymers possess higher mechanical and thermal stability characteristics when compared with other samples. The reason may be assigned to producing novel hydroxyl functional groups and strong interfacial bonding of fillers within the matrix as observed from Fourier‐transform infrared (FTIR) spectra and scanning electron microscope (SEM) micrographs, respectively. Moreover, as observed from the thermogravimetric analysis, the dried leaves‐ferrous filler‐reinforced polymer hybrid composites provided higher thermal stability. Statistical analysis was performed using the one‐way ANOVA technique and found that outcomes were significant statistically under the confidence level of 95%. Hence, this investigation not only emphasize the significance of investigating new polymer composites but also highlight the benefits of engaging advanced modeling to forecast the material characteristics precisely.Highlights Dried leaves and cobalt/nickel/ferrous are applied reinforcement to polymers. Composites fabricated using ultrasonication bath‐assisted wet layup technique. LM Algorithm‐based ANN selected for predicting the best composite. Higher mechanical and thermal stability with dried leaves‐cobalt filler. One‐way ANOVA proved statistically significant within the material properties.

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Rotational molding parameters of wood-plastic composite materials made of recycled high density polyethylene and wood particles

Cited by 26 publications

References 27 publications

Thermal, Mechanical, Morphological and Aesthetical Properties of Rotational Molding PE/Pine Wood Sawdust Composites

Thermal, Mechanical, Morphological and Aesthetical Properties of Rotational Molding PE/Pine Wood Sawdust Composites

Structure–property correlation assessment of LLDPE‐based biocomposites with Azadirachta Indica wood flour

Machine learning‐based prediction of mechanical and thermal properties of nickel/cobalt/ferrous and dried leaves fiber‐reinforced polymer hybrid composites

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