Preparation, structure, and properties of biocomposites based on low‐density polyethylene and lignocellulosic fillers

Pantyukhov, P. V.; Kolesnikova, N. N.; Попов, А. А.

doi:10.1002/pc.23315

Cited by 33 publications

(22 citation statements)

References 44 publications

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“…The composites containing fibrous fillers (flax fibers) have a higher viscosity in comparison to the materials with spherical filler particles (wood flour). These results correspond to the previous work findings [17]. The authors inferred that the shape and content of the filler affected the rheological properties of the composites.…”

Section: Resultssupporting

confidence: 92%

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Ethylene–octene copolymer–wood flour/oil flax straw biocomposites: Effect of filler type and content on mechanical properties

Zykova

Pantyukhov

Попов

2017

Polymer Engineering & Sci

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The properties of biocomposites based on ethylene–octene copolymers (EOCs) were studied. The mechanical, rheological, and physical properties of the biocomposites were investigated with attention to the filler type, filler content, and grade of EOC. Three grades of EOC with different viscosities were used as the polymer matrices. Two lignocellulosic raw materials were selected as fillers: birch wood flour (WF) and oil flax straw (FS). The effect of the filler variation range (30%–70%) on the biocomposites was studied. According to microphotographs, the filler particles were quite uniformly distributed in the polymer matrix. The WF particles had ellipsoid shapes, whereas the FS particles were characterized by cylindrical shapes. The addition of fillers decreased the elongations at the copolymer's break and tensile strengths, but increased the elasticity moduli. The fillers’ hard particles increased the stiffness of the polymer chains in the biocomposites, resulting in declines in elongation at break. The biocomposites with WF had higher tensile strengths and elongations at break than those with FS because the latter were characterized by lower density values than the former. Melt viscosity analysis showed that filler content increased with melt viscosity. The FS biocomposites had higher melt viscosities than the WF biocomposites. POLYM. ENG. SCI., 57:756–763, 2017. © 2017 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 92%

“…Most fully biodegradable biocomposites are developed from synthetic biodegradable polymers: polylactide acid (PLA) , polycaprolactone (PCL), polyhydroxybutyrate (PHB) , and polyhydroxyvalerate (PHV). Polyolefins such as polyethylene and polypropylene are widely used for partially biodegradable biocomposites.…”

Section: Introductionmentioning

confidence: 99%

Ethylene–octene copolymer–wood flour/oil flax straw biocomposites: Effect of filler type and content on mechanical properties

Zykova

Pantyukhov

Попов

2017

Polymer Engineering & Sci

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“…Provided that the FTIR analysis, this mass loss was related to the bioassimilation of NR domains by soil microorganisms. This fact is often observed for such types of biodegradable polymeric composites [14,16]. The further degradation is not limited by the natural rubber bioassimilation.…”

Section: Discussionmentioning

confidence: 77%

“…In contrast, in case of adding 10-30 wt% of different dispersed fillers to polyethylene (cellulose, flax straw, wood flour, etc. ), the elongation at break value decreased by 90 ± 5%, which indicated the brittle fracture of materials [14][15][16][17]. The samples were fractured in the yield region before the plastic flow.…”

Section: Discussionmentioning

confidence: 94%

“…The use of natural fillers derived from renewable resources allows, on the one hand, to replace non-renewable petrochemical raw materials with renewable those; on the other hand, to reduce the production cost by using manufacturing and agricultural waste products. The numerous research achievements have been devoted to the composites based on low-density or high-density poly(ethylene) filled with cellulose [15] and cellulosic materials such as wood flour, flax shive [16], rice husk [17], corn [18], sisal and hemp [19] fibers, as well as banana flour [20] and soy protein [21]. The high ability of natural polymers to be assimilated by microorganisms determines the intensification of biofouling on the hybrid composite polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Natural Rubber in Polyethylene Composites on Morphology, Mechanical Properties and Biodegradability

et al. 2020

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Compounding natural additives with synthetic polymers allows developing more eco-friendly materials with enhanced biodegradability. The composite films based on low-density polyethylene (PE) with different content of natural rubber (NR) (10–30 wt%) were investigated. The influence of NR content on structural features, water absorption and mechanical properties of the composites were studied. The 70PE/30NR composite is characterized by the uniform distribution and the smallest size of NR domains (45 ± 5 μm). A tensile test was satisfied by the mechanical properties of the biocomposites, caused by elasticity of NR domains. The tensile strength of 70PE/30NR composite film is 5 ± 0.25 MPa. Higher water absorption of PE/NR composites (1.5–3.7 wt%) compared to neat PE facilitates penetrating vital activity products of microorganisms. Mycological test with mold fungi and full-scale soil test detected the composite with 30 wt% of NR as the most biodegradable (mass loss was 7.2 wt% for 90 days). According to infrared spectroscopy and differential scanning calorimetry analysis, NR consumption and PE structural changes in the biocomposites after exposure to soil occurred. The PE/NR composites with enhanced biodegradability as well as satisfied mechanical and technological properties have potential applications in packaging and agricultural films.

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Structural biomaterials engineered from lignocellulosic agricultural waste

Kárpáti

Kun

Fekete

et al. 2021

J of Applied Polymer Sci

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Milled sunflower husk was added to three types of polyolefins (polypropylene, low-density and high-density polyethylene) in a wide composition range. Composite series were prepared with or without maleic anhydride-grafted polyolefin coupling agents to investigate the effect of coupling on the mechanical properties and micromechanical deformation processes. Several independent approaches were followed to estimate interfacial adhesion qualitatively and quantitatively, respectively. The results show that interfacial adhesion is significantly improved in the presence of a coupling agent. As a result, coupling changes the dominant deformation process from matrix/filler debonding to the fracture of sunflower husk particles. Milled sunflower husk can enhance significantly the modulus of polyolefins; however, elongation-at-break values are very small, especially at larger filler content, which represents the largest obstacle of practical application.

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Preparation, structure, and properties of biocomposites based on low‐density polyethylene and lignocellulosic fillers

Cited by 33 publications

References 44 publications

Ethylene–octene copolymer–wood flour/oil flax straw biocomposites: Effect of filler type and content on mechanical properties

Ethylene–octene copolymer–wood flour/oil flax straw biocomposites: Effect of filler type and content on mechanical properties

Effect of Natural Rubber in Polyethylene Composites on Morphology, Mechanical Properties and Biodegradability

Structural biomaterials engineered from lignocellulosic agricultural waste

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