Evaluation of Mussel Shells Powder as Reinforcement for PLA-Based Biocomposites

Gigante, Vito; Cinelli, Patrizia; Righetti, Maria Cristina; Sandroni, Marco; Tognotti, Leonardo; Seggiani, Maurizia; Lazzeri, Andrea

doi:10.3390/ijms21155364

Cited by 28 publications

(29 citation statements)

References 54 publications

(74 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the increase is very limited showing that all the composites developed were stable in the so-called 'efficient residence time' of extrusion processes. As shown in Figure 6a, the stiffness of the composites increased as the bran fiber load increased, as reported in several works where natural fibers have been added to bio-polyester matrices [41][42][43]. The increase in stiffness is almost linear for the composites with untreated bran; while, for the composites with the filler treated with waxes, going to flatten, indicating that waxes act as a slider due to their oily consistency.…”

Section: Melt Flow Analysissupporting

confidence: 79%

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

et al. 2020

Self Cite

View full text Add to dashboard Cite

In this work, processability and mechanical performances of bio-composites based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) containing 5, 10, and 15 wt % of bran fibers, untreated and treated with natural carnauba and bee waxes were evaluated. Wheat bran, the main byproduct of flour milling, was used as filler to reduce the final cost of the PHBV-based composites and, in the same time, to find a potential valorization to this agro-food by-product, widely available at low cost. The results showed that the wheat bran powder did not act as reinforcement, but as filler for PHBV, due to an unfavorable aspect ratio of the particles and poor adhesion with the polymeric matrix, with consequent moderate loss in mechanical properties (tensile strength and elongation at break). The surface treatment of the wheat bran particles with waxes, and in particular with beeswax, was found to improve the mechanical performance in terms of tensile properties and impact resistance of the composites, enhancing the adhesion between the PHBV-based polymeric matrix and the bran fibers, as confirmed by predictive analytic models and dynamic mechanical analysis results.

show abstract

Section: Melt Flow Analysissupporting

confidence: 79%

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…As can be seen, the PS has an initial weight loss of about 4% from room temperature to 105 • C due to the moisture adsorbed before the test; up to 220 • C PS is thermally stable and starts to degrade after 220 • C with a weight loss of 16% up to 390 • C, attributable to the decomposition of hemicelluloses and cellulose of fibres [30]. At higher temperatures the decomposition of the organic fraction is completed and the decomposition of the calcium carbonate starts above 600 • C [31]. Thus, the thermal stability of PS up to 220 • C attests its suitability to be processed with PLA/PBAT matrix having extrusion temperatures below these values and, consequently, no significant PS degradation is expected during its processing by extrusion.…”

Section: Morphological Analysismentioning

confidence: 99%

On the Use of Paper Sludge as Filler in Biocomposites for Injection Moulding

et al. 2021

Self Cite

View full text Add to dashboard Cite

The potential use of paper sludge (PS) as filler in the production of bio-composites based on poly lactic acid (PLA) and polybutylene adipate terephthalate (PBAT) was investigated. PS/PLA/PBAT composites, with addition of acetyl tributyl citrate (ATBC) as biobased plasticizer, were produced with PS loadings up to 30 wt.% by twin-screw extrusion followed by injection moulding. The composites were characterized by rheological measurements, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and mechanical tests (tensile and impact resistance) to study the effect of PS on the processability, thermal stability, crystallinity and mechanical performance of polymeric matrix. The optimized composites at higher PS content were successfully processed to produce pots for horticulture and, in view of this application, preliminary phytotoxicity tests were conducted using the germination test on Lepidium sativum L. seeds. Results revealed that developed composites up to 30 wt.% PS had good processability by extrusion and injection moulding showing that PS is a potential substitute of calcium carbonate as filler in the production of bio-composites, and the absence of phytotoxic effects showed the possibility of their use in the production of pots/items for applications in floriculture and/or horticulture.

show abstract

“…Different natural fibers and particulate fillers for polymeric matrices have been investigated in the literature, such as mussel shells, flax, hemp, kenaf, jute, ramie, banana, artichoke, cellulose fibers, etc. [29][30][31][32][33][34][35][36]. However, natural fibers containing a large amount of cellulose, hemicellulose and lignin tend to have weak interfacial bonding with the matrix due to their polar hydrophilic tendency that contrasts the polar and hydrophobic properties of the polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Bio-Based Dispersing Aid (Einar® 101) on PLA-Arbocel® Biocomposites: Evaluation of the Interfacial Shear Stress on the Final Mechanical Properties

et al. 2020

Self Cite

View full text Add to dashboard Cite

In this paper, the production and the characterization of poly (lactic) acid (PLA)-based composites containing different amounts (from 10 wt.% to 25 wt.%) of ultra-short cellulose fibers (Arbocel 600 BE/PU) have been investigated. On the basis of a previous study, it was observed that the addition of the cellulose fibers led to an embrittlement of the composite. Consequently, in order to obtain a composite with enhanced impact resistance and elongation at break, the effect of the Einar 101 addition (a bio-based dispersing aid additive) was analyzed. The role of the adhesion between the fiber and the matrix, coupled with a better fiber dispersion, was thus evaluated. Also, the consequences on the final mechanical properties (tensile and impact test) caused by the Einar addition were investigated. Analytical models were also applied in order to obtain an evaluation of the variation of the interfacial shear stress (IFSS) (strictly correlated to the fiber-matrix adhesion) caused by the Einar introduction. Furthermore, due to the very low aspect ratio of the Arbocel fibers, a suitable Bader and Boyer model variation was adopted in order to have a better quantitative estimation of the IFSS value.

show abstract

Evaluation of Mussel Shells Powder as Reinforcement for PLA-Based Biocomposites

Cited by 28 publications

References 54 publications

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

On the Use of Paper Sludge as Filler in Biocomposites for Injection Moulding

Effect of a Bio-Based Dispersing Aid (Einar® 101) on PLA-Arbocel® Biocomposites: Evaluation of the Interfacial Shear Stress on the Final Mechanical Properties

Contact Info

Product

Resources

About