A Fully Biodegradable Pla/PBS Composite Reinforced With Wood Flour

Ludwiczak, Joanna; Frąckowiak, Stanisław; Leluk, Karol; Hanus-Lorenz, Beata

doi:10.35812/cellulosechemtechnol.2019.53.93

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Although the impact strength of the P-H/PLA bio-composite, produced with the PBS/PLA blend, increased compared to the untreated H/PLA, it decreased by 38% compared to the pure PLA. A similar impact strength reduction trend for natural fiber reinforced PBS/PLA blend was also stated by Saeed et al [53] and Ludwiczak et al [54].…”

Section: Impact Strengthsupporting

confidence: 87%

Tribological properties of hemp fiber reinforced polylactic acid bio-composites: effect of different types of modification methods

Elen

Yıldırım

Kanbur

2023

Funct. Compos. Struct.

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In this study, green composites are prepared with 30 wt.% hemp fibers reinforced polylactic acid (PLA) to enhance impact and tribological properties. Different surface treatments of alkali and silane, compatibilizer of maleic anhydride (MA), and blends of thermoplastic polyurethane (TPU) and poly (butylene succinate) (PBS) were applied to improve interfacial adhesion between fibers and matrix. Hemp reinforced PLA bio-composites were fabricated and characterized by hardness, impact strength, wear and friction properties. The tribological tests of the injection-molded components were performed under two different loads (10N and 20N) as dry-sliding linearly reciprocating motion per ASTM G133. Modified composites gave better tribological properties than unmodified composite. While no remarkable improvement was observed in the hardness value of untreated fiber reinforced composite, alkali treated composite reached up to 43% improvement in hardness value. In general, as the load increased, an increase in weight loss was observed in all composites. Unmodified bio-composite exhibited a very low weight loss, and specific wear rate (SWR) compared to neat PLA under 10N load. The SWR of the MA bio-composite had the lowest value for both loads (10N and 20N) compared to the other bio-samples. The TPU blended biocomposite exhibited the highest impact strength (22.96 kJ/m2) after pure PLA (26.5 kJ/m2). Therefore, due to surface treatments and blends applied to the fibers, some composites' hardness and wear resistance were increased while the impact strength and friction coefficient was decreased. Especially silane surface treatment and maleic anhydride compatibilizer application increased the wear resistance of composites. When the Scanning electron microscope (SEM-EDX) images were examined, it was revealed that the fiber and matrix interface bonding was good, and the fibers were firmly embedded in the matrix. Furthermore, forming a protective thin film layer formed by the polymer debris from the surface during dry-sliding increased the wear performance of the bio-composites.

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Section: Impact Strengthsupporting

confidence: 87%

Tribological properties of hemp fiber reinforced polylactic acid bio-composites: effect of different types of modification methods

Elen

Yıldırım

Kanbur

2023

Funct. Compos. Struct.

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“…PLA/PBS/Wood Flour [27] −12 --PLA/PBS/microcrystalline cellulose [28] 2 −18 −96 PLA/PBS/cellulose nanocrystals [29] -− 26 22 PLA/PBS/poly(ester adipate) [30] -226 −76 PLA/PBS/sweet bamboo kraft pulp [31] Information) as well as competent stress transfer between two polymers. [32]…”

Section: Methodsmentioning

confidence: 99%

A Facile Strategy for Compatibilization of PLA/PBS Blends by Incorporating Camellia Seed Powder

Cai

Cao

Zheng

et al. 2022

Macro Materials & Eng

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Using biodegradable blending materials is one of the most effective ways to address plastic pollution but it is hindered by its poor interfacial interaction along with high costs. Herein, an envirionmentally friendly filler, camellia seed powder (CSP)−a byproduct of camellia seed after defatting, is reported, which is first served as a compatibilizer in polylactic acid (PLA)/polybutylene succinate (PBS) blends without any other aids or complicated pretreatment, effectively toughening the PLA/PBS blends due to a better interfacial interaction. The results show that the toughness of composites increases with CSP content. With the addition of 30 phr CSP, its impact strength and elongation at break increase by 44.31% and 148.42%, respectively, as compared with the blend without CSP. The combined effects of improved interfacial bonding, reduced particle size of PBS and efficient stress transfer are responsible for the toughness enhancement. The compatibilization mechanism is proposed that ─COOH groups in PLA and PBS react with ─NH2 in CSP. The above finding of CSP as a compatibilizer provides a facile and inexpensive strategy in the fabrication of high‐performance biodegradable materials.

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“…Another mechanism to change the properties of biopolymers is by the addition of fillers; when this filler is derived from agricultural or food wastes, the environmental benefits can be even more significant, and also reduce the overall amount of polymer needed which may have economic benefits. On the agricultural side, lignocellulosic plant fibers have been used to produce wood flour 19,20 or pure cellulose, in the form of microfibrillated or nanocellulose, 21,22 which has then been used to formulate composites. The main source of food waste is generally from industrial processing rather than domestic waste, but a wide range of food wastes have been investigated for producing plastic composites; for example wine harvest residues, 23,24 eggshells, 25 tea waste, 26 shellfish shell, 27 orange peel, 28 lemon peel, 29 garlic skin 30 .…”

Section: Introductionmentioning

confidence: 99%

An investigation on the possible use of coffee silverskin in PLA/PBS composites

Ghazvini

Ormondroyd

Curling

et al. 2022

J of Applied Polymer Sci

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The production of degradable packaging materials is a task that can be no longer postponed. Moreover, high amounts of agricultural wastes are landfilled without any recycling. In this research, the possibility to formulate particulate composites made of biopolymers filled with coffee waste with acceptable physical and mechanical characteristics that will degrade is investigated. The addition of this agricultural waste, by reducing the requested amount of biopolymer, can decrease the overall price of the material presently the main limiting factor to the use of biopolymers in the packaging industry. Silverskin, the integument of coffee beans discarded during the roasting process, after a milling step, is added up to a 30 wt% either to polylactic acid (PLA) or to a blend of PLA and polybutylene succinate. The filler can be homogeneously dispersed in both systems. The data shows that the silverskin filler increases the elastic modulus but decreases the tensile strength of the material and helps the development of crystal phase in the matrix. The thermal stability and the hydrophobicity of the materials stay almost unchanged on filler addition. Moreover, data shows that the addition of silverskin increases the materials susceptibility to microbial attack.

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A Fully Biodegradable Pla/PBS Composite Reinforced With Wood Flour

Cited by 6 publications

References 16 publications

Tribological properties of hemp fiber reinforced polylactic acid bio-composites: effect of different types of modification methods

Tribological properties of hemp fiber reinforced polylactic acid bio-composites: effect of different types of modification methods

A Facile Strategy for Compatibilization of PLA/PBS Blends by Incorporating Camellia Seed Powder

An investigation on the possible use of coffee silverskin in PLA/PBS composites

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