Wear resistance of injection moulded PLA-talc engineered bio-composites: Effect of material design, thermal history and shear stresses during melt processing

Aversa, Clizia; Barletta, Massimiliano; Pizzi, Elisa; Puopolo, M.; Vesco, Silvia

doi:10.1016/j.wear.2017.08.001

Cited by 17 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the adhesion of the matrix and ller play a critical role when improving abrasive wear performance through compatibilization or surface modications. 8 These interfacial interactions between polymer and ller are also relevant for enhancing the particulate dispersion throughout the matrix that can provide good barrier properties. 9 Nevertheless, the general additives or compatibilizers that enable the enhancement of these properties can provoke the degradation of the polyester matrix and weaken the mechanical and thermal stability, causing consideration when having a nal application in mind.…”

Section: Introductionmentioning

confidence: 99%

“…11 This mineral ller has also been explored for its abilities to prevent abrasive wear in PLA. 8 Therefore, looking at alternatives to talc to reduce density concerns and provide a more sustainable ller variant, biocarbon has begun to show promise as an inexpensive bioderived additive. In previous work, biocarbon has been incorporated into PLA with an enhancement in the rigidity of injection molded samples without compromising the thermal-mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative study of the extrinsic properties of poly(lactic acid)-based biocomposites filled with talc versus sustainable biocarbon

Snowdon

Mohanty

et al. 2019

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative study of the extrinsic properties of poly(lactic acid)-based biocomposites filled with talc versus sustainable biocarbon

Snowdon

Mohanty

et al. 2019

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…On the other hand, its slow crystallization rate, brittleness, and inherent mechanical properties are still insufficient for practical use. Therefore, numerous attempts have been made to improve the physical characteristics of PLA, for example, the addition of a plasticizer (i.e., poly(ethylene glycol) (PEG), tributyl citrate), or a nucleating agent, such as boron nitride, calcium carbonate, and talc [ 7 , 8 , 9 , 10 , 11 ]. The incorporation of a nanofiller to the PLA matrix is a significant solution for the various problems of PLA, such as clay [ 12 ], carbon nanotubes (CNTs) [ 13 ], cellulose nanocrystals (CNCs) [ 14 ], and graphene [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Melt Rheology and Mechanical Characteristics of Poly(Lactic Acid)/Alkylated Graphene Oxide Nanocomposites

et al. 2020

View full text Add to dashboard Cite

Poly(lactic acid) (PLA) nanocomposites were synthesized by a solution blending and coagulation method using alkylated graphene oxide (AGO) as a reinforcing agent. Turbiscan confirmed that the alkylation of GO led to enhanced compatibility between the matrix and the filler. The improved dispersity of the filler resulted in superior interfacial adhesion between the PLA chains and AGO basal plane, leading to enhanced mechanical and rheological properties compared to neat PLA. The tensile strength and elongation at break, i.e., ductility, increased by 38% and 42%, respectively, at the same filler content nanocomposite (PLA/AGO 1 wt %) compared to nonfiller PLA. Rheological analysis of the nanocomposites in the molten state of the samples was performed to understand the filler network formed inside the matrix. The storage modulus increased significantly from PLA/AGO 0.5 wt % (9.6 Pa) to PLA/AGO 1.0 wt % (908 Pa). This indicates a percolation threshold between the two filler contents. A steady shear test was performed to examine the melt flow characteristics of PLA/AGO nanocomposites at 170 °C, and the viscosity was predicted using the Carreau−Yasuda model.

show abstract

“…Figure 13 shows the result obtained for each formulation. The bottles have a pleasant aesthetic appearance, with a mother‐of‐pearl color conferred by the PLA present in all formulations and by the micronized talc present, however, only in the formulations based on PLA/PBS in accordance with Aversa et al 16,26 …”

Section: Resultsmentioning

confidence: 60%

“…This talc has a planar shape, with two dimensions much larger than the third. It is therefore a micro‐lamellar talc, particularly useful as a reinforcing element in bioplastic compounds and as a nucleating agent 26 . Stabilizers, rheological additives and lubricants are used to prevent material degradation by chain scission and chain branching reactions and to improve the behavior of the materials during the co‐rotating twin‐screw extrusion process for the production of the compound and, subsequently, to improve the behavior of the compound during the extrusion blow molding of the bottles.…”

Section: Methodsmentioning

confidence: 99%

Corotating twin‐screw extrusion of poly(lactic acid)PLA/poly(butylene succinate)PBS/ micro‐lamellar talc blends for extrusion blow molding of biobased bottles for alcoholic beverages

Aversa

Barletta

Gisario

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Extrusion blow molding is a well‐established technology for the manufacture of fossil‐based plastic bottles. The process is, however, still little used for the manufacture of bottles with a low environmental footprint, especially those based on bioplastic from renewable sources. In this context, the objective of this work is precisely the study and experimental design of poly(lactic acid) PLA/poly(butylene succinate) PBS/micro‐lamellar talc compounds for the manufacturing of bioplastic bottles, basically for wine packaging. In particular, the design was carried out to ensure, primarily, an adequate processability of the bioplastic material in the blowing process. Second, the compound was loaded with different micro‐lamellar talc content so as to achieve protection from the environmental factors, which is of paramount importance to ensure a long shelf‐life to wine. The bio‐derived polyester resins are very complex to transform, as they are subject to thermo‐hydrolytic degradation phenomena during the processing of the polymer melt. Processability is further limited in the presence of high micro‐lamellar talc content that increases the melt viscosity, thus making the material even more difficult to shape by extrusion blow molding. The experimental analysis involved the use of a co‐rotating twin‐screw extruder for the manufacture of the bioplastic compounds. The compounds were first subjected to thermo‐rheological and physical characterization tests. Second, it was tested in the extrusion blow molding process. The experimental results have shown that blends based on bio‐derived polyester resins can be adequately processed by extrusion blow molding, showing extremely stable rheological behavior both during the extrusion phase of the parison and the subsequent blowing process of the parison itself. These blends have, therefore, an interesting potential to be used as an alternative with a low environmental footprint to oil‐based plastics in the production of wine bottles.

show abstract

Wear resistance of injection moulded PLA-talc engineered bio-composites: Effect of material design, thermal history and shear stresses during melt processing

Cited by 17 publications

References 44 publications

Comparative study of the extrinsic properties of poly(lactic acid)-based biocomposites filled with talc versus sustainable biocarbon

Comparative study of the extrinsic properties of poly(lactic acid)-based biocomposites filled with talc versus sustainable biocarbon

Melt Rheology and Mechanical Characteristics of Poly(Lactic Acid)/Alkylated Graphene Oxide Nanocomposites

Corotating twin‐screw extrusion of poly(lactic acid)PLA/poly(butylene succinate)PBS/ micro‐lamellar talc blends for extrusion blow molding of biobased bottles for alcoholic beverages

Contact Info

Product

Resources

About