Use of Ricinus communis shredded material as filler in rotational molded parts to improve the bio-disintegration behavior

Romero, Francisco González; Ortega, Zaida; Castellano, Jessica; Benítez, Antonio N.; Marrero-Alemán, María Dolores; Suárez, Luis

doi:10.1007/s00289-022-04593-5

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…A lack of modulus change recorded by Andrzejewski et al upon tensile testing, was thought to be due to high porosity and PLA/BH composites’ increase in brittle behaviour. Other studies reported on the use of valorised Ricinus communis particles in PE and PLA, communicating significant reductions in impact strength when exceeding 5 wt% and reductions in tensile strength in PE, but some increased in PLA [ 71 ]. Robledo-Ortiz et al [ 46 ] noticed poor compatibility between bio-based PE and natural fillers.…”

Section: Resultsmentioning

confidence: 99%

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Recent Advancements towards Sustainability in Rotomoulding

Kelly-Walley,

Martin,

Ortega

et al. 2024

Materials

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Rotational moulding is a unique low-shear process used to manufacture hollow parts. The process is an excellent process method for batch processing, minimal waste and stress-free parts. However, the process has drawbacks such as long cycle times, gas dependency and a limited palette of materials relative to other process methods. This review aimed to shed light on the current state-of-the-art research contributing towards sustainability in rotational moulding. The scope of this review broadly assessed all areas of the process such as material development, process adaptations and development, modelling, simulation and contributions towards applications carving a more sustainable society. The PRISMA literature review method was adopted, finding that the majority of publications focus on material development, specifically on the use of waste, fillers, fibres and composites as a way to improve sustainability. Significant focus on biocomposites and natural fibres highlighted the strong research interest, while recyclate studies appeared to be less explored to date. Other research paths are process modification, modelling and simulation, motivated to increase energy efficiency, reduction in scrap and attempts to reduce cycle time with models. An emerging research interest in rotational moulding is the contribution towards the hydrogen economy, particularly type IV hydrogen vessels.

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Section: Resultsmentioning

confidence: 99%

“…• Applying chemical treatment using GMA-g-PLA, fibre-matrix interfacial adhesion was improved and porosity was reduced • At 25 wt% with fibres treated twice, improvements were recorded in flexural and tensile properties compared to neat PE [71] PE, PLA Ricinus Cummunis Particles…”

Section: Biopolymers and Biocompositesmentioning

confidence: 99%

Recent Advancements towards Sustainability in Rotomoulding

Kelly-Walley,

Martin,

Ortega

et al. 2024

Materials

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“…where ∆H 0 is the enthalpy for 100% crystalline sample (293 J/g for PE [52]), and m Sp is the mass fraction of the microalgae. The oxidation induction time (OIT) of the composite materials was also determined by DSC following the UNE-EN ISO 11357-6:2018 standard [53].…”

Section: Thermal Behaviormentioning

confidence: 99%

Characterization of Microalgae Biomass-Based Composites Obtained through Rotational Molding

Díaz,

Romero,

Suárez

et al. 2024

Polymers

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The wide range of applications and the numerous advantages of plastics have led to their excessive use, with subsequent damage to ecosystems. As an environmentally friendly alternative, biocomposites have gained much attention, and microalgae have become a potential source for their production. In this study, the use of washed and unwashed Spirulina in polyethylene-based composites has been evaluated as a way to prevent the thermooxidation of polyethylene, while at the same time, reducing the amount of virgin plastic used. Biocomposites were produced by rotomolding, testing different biomass contents and determining their mechanical and thermal performances as well as their water uptake level. Composites with up to 15% of biomass (by weight), a particularly high ratio for rotomolding, were satisfactorily produced. Using 5% of both biomasses did not significantly modify the behavior when compared with the neat PE samples’ properties. For higher loadings, the use of non-washed biomass allowed us to obtain better properties, with added benefits related to using an unwashed biomass (less water consumption, lower costs and fewer environmental impacts). On the other hand, this study showed a promising beneficial effect on the thermooxidative resistance of composites, as the oxidation induction times were notably increased with biomass addition.

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Rotomolded polypropylene‐ignimbrite composites: Giving a second life to mineral dust wastes

Romero,

Suárez,

Díaz

et al. 2024

Polymer Composites

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The possibility of rotomolding polypropylene (PP) composites with high loadings of a silica‐based dust of ignimbrite, a byproduct of volcanic stone extraction is demonstrated. This study aims to establish the properties of composites with various ratios of mineral dust as a filler in PP matrices at loadings from 5 to 30 wt%, ultimately transforming mining residues into a valuable resource for composite production and creating a value chain around the traditional mining industry. Once the composites were obtained, they were subjected to several characterization techniques to comprehensively assess their mechanical and thermal properties. In general, a high percentage of ignimbrite powder has resulted in a reduction in the mechanical properties of neat PP, although no significant changes were observed for composites at lower loadings. Furthermore, the incorporation of this mineral material modified the thermal properties of the PP, enhancing its thermal stability. The blending of the matrix and filler resulted in a reduction in both the melting crystallization temperatures for highly‐filled composites. Rotomolded items with good aesthetics, with stone‐like appearance, were obtained without any modification on the mineral dust or even without any melt compounding, therefore not increasing the energy consumption during the composites production.Highlights Composites production is a suitable strategy for valorization of mineral residues. Welded ignimbrite residual dust has been used for the first time in composites. Mineral dust has been successfully used in composites obtained by rotomolding. Polypropylene with up to 30% of the stone dust can be processed. Good aesthetics and mechanical features can be obtained with mineral wastes.

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Use of Ricinus communis shredded material as filler in rotational molded parts to improve the bio-disintegration behavior

Cited by 4 publications

References 46 publications

Recent Advancements towards Sustainability in Rotomoulding

Recent Advancements towards Sustainability in Rotomoulding

Characterization of Microalgae Biomass-Based Composites Obtained through Rotational Molding

Rotomolded polypropylene‐ignimbrite composites: Giving a second life to mineral dust wastes

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