Coir fiber as thermal insulator and its performance as reinforcing material in biocomposite production

Mahmud, Md. Arif; Abir, Nafis; Anannya, Ferdausee Rahman; Khan, Ayub Nabi; Rahman, A. N. M. Masudur; Jamine, Nasrin

doi:10.1016/j.heliyon.2023.e15597

Cited by 21 publications

(5 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is clear from the SEM micrographs of the cryofracture surfaces of the prepared composites, displayed in Figure 6 . The composites with untreated CSS show poor interfacial adhesion, with evident gaps at the interface, as reported elsewhere in the literature for CSS-containing biopolymers [ 46 , 47 , 48 ] and other lignocellulosic-filler-reinforced biopolymers [ 29 , 32 , 35 ]. These interfacial gaps are not present in the composites with treated CSS, which also looks more compact and less porous than the untreated filler.…”

Section: Resultssupporting

confidence: 76%

“…An attractive option to further improve the sustainability and reduce the cost of PLA/PBSA blends could be the partial replacement of the polymer phase with natural fillers, such as cellulose or lignin derivatives, which do not decrease the biodegradation ability of the biopolymers and can be also used to tune the thermomechanical and functional properties, as shown for several biofiller–biopolymer combinations [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Among these natural fillers, one that has gained increasing attention in the last years is coffee silver skin (CSS).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Green Treatment Mitigates the Limitations of Coffee Silver Skin as a Filler for PLA/PBSA Compatibilized Biocomposites

Perin,

Dorigato,

Bertoldi

et al. 2023

Molecules

View full text Add to dashboard Cite

The development of fully renewable and biodegradable composites for short-term applications was pursued by combining a compatibilized poly(lactic acid) (PLA)/poly(butylene succinate-co-adipate) (PBSA) (60:40 wt:wt) blend with coffee silver skin (CSS), an industrial byproduct from coffee processing. An epoxy-based reactive agent (Joncryl ADR-4468) was added as a compatibilizer. CSS was incorporated at 5, 10, and 20 wt% in the blend both in the as-received state and after a simple thermal treatment in boiling water, which was performed to mitigate the negative impact of this filler on the rheological and mechanical properties of the blend. The CSS treatment effectively increased the filler degradation temperature of 30–40 °C, enabling stable melt processing of the composites. It also improved filler–matrix adhesion, resulting in enhanced impact properties (up to +172% increase in impact energy compared to the untreated filler). Therefore, treated CSS demonstrated potential as an effective green reinforcement for PLA/PBSA blends for rigid packaging applications. Future works will focus on studying suitable surface modification of CSS to further increase the interfacial interaction and the tensile quasi-static properties, to fully exploit the capabilities of this renewable material toward the development of eco-friendly composites.

show abstract

Section: Resultssupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

A Green Treatment Mitigates the Limitations of Coffee Silver Skin as a Filler for PLA/PBSA Compatibilized Biocomposites

Perin,

Dorigato,

Bertoldi

et al. 2023

Molecules

View full text Add to dashboard Cite

show abstract

“…The physical structure of Zm fibres is particularly porous, with air filling approximately one-third of the volume as a result of the numerous cavities that make up the fibre structure. As a result, the fibre has a low ability to conduct heat 78 . Figure 4 shows the temperature vs time plot to determine the thermal conductivity of Zm root fibres.…”

Section: Resultsmentioning

confidence: 99%

Experimental investigation on strengthening of Zea mays root fibres for biodegradable composite materials using potassium permanganate treatment

Kavitha,

Priya,

Arunachalam

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Humans are the only species who generate waste materials that cannot be broken down by natural processes. The ideal solution to this waste problem would be to employ only compostable materials. Biodegradable materials play a key role in creating a safer and greener world. Biodegradability is the gift that keeps on giving, in the sense of creating an Earth worth living. The future is thus best served by green energy, sustainability, and renewable resources. To realize such goals, waste should be considered as a valuable resource. In this context, Zea mays (Zm) root fibres, which are normally considered as agricultural waste, can be used as reinforcing substances in polymer matrices to produce structural composite materials. Before being used in composites, such fibres must be analysed for their physical properties. Chemical treatments can be employed to improve the structural quality of fibres, and the changes due to such modification can be analysed. Therefore, the current work examines the effect of permanganate treatment on the surface properties of Zm fibres. The raw and potassium permanganate-treated samples were assayed for various properties. Physical analysis of the fibre samples yielded details concerning the physical aspects of the fibres. The thermal conductivity and moisture absorption behaviour of the samples were analysed. Chemical analysis was employed to characterize the composition of both treated and untreated samples. p-XRD was employed to examine the crystalline nature of the Zm fibres. Numerous functional groups present in each sample were analysed by FTIR. Thermogravimetric analysis was used to determine the thermal stability of Zm fibres. Elemental analysis (CHNS and EDS) was used to determine the elemental concentrations of both raw and treated samples. The surface alterations of Zm fibres brought on by treatment were described using SEM analysis. The characteristics of Zm roots and the changes in quality due to treatment were reviewed, and there were noticeable effects due to the treatment. Both samples would have applications in various fields, and each could be used as a potential reinforcing material in the production of efficient bio-composites.

show abstract

“…It is imperative to highlight that significant results could be achieved via the improvement of construction materials' performance since they heavily influence the consumption of a considerable amount of energy [24][25][26][27]. For this reason, scientific research has laid emphasis on improving the energy efficiency and integration, technological development, industrial symbiosis, sustainability and durability besides paying a special attention to porous materials [23,[27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of porous building materials: An exploration of new challenges in fractal modelling solutions

Pia,

Cappai

2023

RILEM Tech Lett

View full text Add to dashboard Cite

The improvement in the insulation material performance is one of the recent crucial problems. The energy consumption in the construction and buildings field has a significant impact on the society and the environment. For these reasons, researchers have focused on studying their thermal behaviour in order to improve fabrication methods and material design structures. In this sense, a great contribution has been offered by the modeling procedures. A remarkable attention has been dedicated to the application of fractal geometry which seems to be a promising method to replicate the porous structures as well as to predict the effective thermal conductivity. In this paper, a review of different modeling procedures is presented, comparing both traditional and fractal theory-based approaches. Fractal models demonstrate high reliability in reproducing experimental data under various conditions, including dry and moist systems. This is further enhanced by the application of recursive formulas, which streamline calculations even for complex porous microstructures. The choice between one model and another depends on the specific characteristics of the materials under study. In all cases, the versatility of the analytical procedures enables one to achieve a remarkable agreement with experimental data.

show abstract

Coir fiber as thermal insulator and its performance as reinforcing material in biocomposite production

Cited by 21 publications

References 94 publications

A Green Treatment Mitigates the Limitations of Coffee Silver Skin as a Filler for PLA/PBSA Compatibilized Biocomposites

A Green Treatment Mitigates the Limitations of Coffee Silver Skin as a Filler for PLA/PBSA Compatibilized Biocomposites

Experimental investigation on strengthening of Zea mays root fibres for biodegradable composite materials using potassium permanganate treatment

Thermal conductivity of porous building materials: An exploration of new challenges in fractal modelling solutions

Contact Info

Product

Resources

About