Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

Frącz, Wiesław; Janowski, Grzegorz

doi:10.12913/22998624/71150

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…Despite the same filler content, the hydrodynamic interactions for wood-fiber-based composites are clearly increasing, which means that this type of material can be characterized as semidilute regime. In the discussed case, where rheological properties still do not indicate strong hydrodynamic interactions for the buckwheat husk, the main reason for the different behavior of the PP/WF30 sample is the higher aspect ratio (L/d) for WF, which according to the literature is around 10 [50,51] for this type of commercially available fibers, whereas for grounded husk fillers this coefficient ranges from 2 to 3 [56,57,58].…”

Section: Resultsmentioning

confidence: 91%

“…The used type of particles was Lignocel C120 (Rettenmaier and SohneGmbh, Rosenberg, Germany) obtained from conifer trees, the particle size ranged from 70 to 150 μm. This kind of wood flour has been used several times in combination with thermoplastic polymers [48,49,50]. More detailed description of the fillers is presented in the Supporting Information section, where the general appearance of the fillers and their microscopic images are presented (Figures S1 and S2).…”

Section: Methodsmentioning

confidence: 99%

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Injection Molding of Highly Filled Polypropylene-based Biocomposites. Buckwheat Husk and Wood Flour Filler: A Comparison of Agricultural and Wood Industry Waste Utilization

2019

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The study presents a comparative analysis for two types of polymer fillers used during the processing of polypropylene by the injection molding technique. The aim of the study was to assess the usefulness of buckwheat husk waste as an alternative to the widely used wood fiber fillers. For this purpose, we prepared composite samples containing 10, 30 and 50 wt % of the filler, which were subjected to mechanical tests, thermal analysis, and structural observations in order to evaluate and compare their properties. Additionally, we evaluated the effectiveness of the composite system’s compatibility by using maleic anhydride grafted polypropylene (PP-g-MA). The results of mechanical tests confirmed a more effective reinforcement mechanism for wood fibers; however, with the addition of PP-g-MA compatibilizer, these differences were significantly reduced: we observed a 14% drop for tensile modulus and 5% for strength. This suggests high susceptibility to this type of adhesion promoter, also confirmed by SEM observations. The paper also discusses rheological measurements conducted on a rotational rheometer, which allowed to confirm more favorable flow characteristics for composites based on buckwheat husks.

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Section: Resultsmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Injection Molding of Highly Filled Polypropylene-based Biocomposites. Buckwheat Husk and Wood Flour Filler: A Comparison of Agricultural and Wood Industry Waste Utilization

2019

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“…Wood-plastic composites (WPCs) are made of plant fiber and thermoplastic resin and have many advantages of moisture, pest, and fire resistance [1][2][3][4][5]; thus, these materials are often applied to industrial construction, garden facilities, and environmental protection [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Rice Husk Fiber-Reinforced Polyvinyl Chloride Composites under Accelerated Simulated Soil Conditions

Wang

2019

International Journal of Polymer Science

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To study the effect of accelerated simulated soil aging on the physical, mechanical, and thermal behavior of rice husk fiber-reinforced polyvinyl chloride composites. The worst soil aging condition was determined using the orthogonal design method, and the physical, mechanical, and thermal properties of the composites were analyzed over 21 d. The results indicate that the worst soil-accelerated aging condition was as follows: soil temperature of 65°C, soil pH of 2.5, soil moisture content of 45%, and soil porosity (ratio of thick to thin) of 3 : 7. An extended aging time tends to cause poor interfacial bonding quality, and the presence of many microcracks reduced thermal stability and flexural and impact strength. Many fibers were exposed, which resulted in increasing 24 h water absorption and thermal expansion coefficient. The hardness, tensile strength, flexural strength, impact strength, and pyrolysis temperature of the composites (after 21 d of aging) decreased from 50 HRR, 17.42 MPa, 35.2 MPa, 3.19 kJ/m2, and 258.5°C to 26 HRR, 11.5 MPa, 16.8 MPa, 1.16 kJ/m2, and 251.3°C, respectively. The mass loss rate, 24 h water absorption, discoloration, and line thermal expansion coefficient of the composites increased from 0%, 4.19%, 0, and 28.43 to 2.9%, 7.92%, 29.03, and 29.98, respectively.

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“…The observed decrease in tensile strength was due to lack of bondage between the hydrophobic plastic and the lignocellulose fiber. Fracz and Janowski [ 50 ] investigated a green composite containing polyesters and miscanthus fibers. Due to strain hardening, a high‐tensile strength of 45 MPa was achieved for a polybutylene succinate (PBS)/PBAT composite blend.…”

Section: Mechanical Characterization Of the Injection Molded Compositesmentioning

confidence: 99%

A critical review on mechanical and morphological characteristics of injection molded biodegradable composites

et al. 2022

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Factors like environmental and societal awareness often lead to a significant change of action in the development of eco-friendly materials like the family of green composites. Green composites are becoming increasingly apparent as a sensible and potentially viable alternative to the synthetic composites. A healthy synergism of factors to include weight reduction, cost, performance improvement, biodegradable nature, nontoxic properties, and flexibility are often the key motives that provide the much needed impetus for the development of green composites for the purpose of selection and use in a spectrum of applications. The biodegradable or green composites became a viable substitute for the long-established materials and often a challenge to the family of synthetic polymer-based composites. The present study draws attention to the issues and challenges that come in the way of development and characterization of "green" composites primarily on the use of advanced manufacturing processes like injection molding. In this article, the chemical composition, structure, mechanical properties, and classification of the natural fibers are presented and briefly discussed. The mechanical properties, to include tensile response, flexural behavior, and impact strength, of the injection molded composites are presented and adequately discussed. The effect and role of surface treatments and coupling agents on mechanical properties of the family of polymer composites, to include the nonbiodegradable composites, partially green composites, and fully green composites, are examined and adequately discussed.green composite, injection molding, mechanical properties, natural fibers, processing | INTRODUCTION"Green" composite is a mixture of naturally occurring fiber and a biodegradable polymer (natural resin or synthesized resin). The "green" composites often tend to degrade easily at the end of their lifecycle. Invariably, "green" composites get converted to water (H 2 O) and carbon dioxide (CO 2 ) without appreciably influencing the environment. The synthetic polymer composites have a plethora of applications in the fields spanning automobile

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Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

Cited by 6 publications

References 15 publications

Injection Molding of Highly Filled Polypropylene-based Biocomposites. Buckwheat Husk and Wood Flour Filler: A Comparison of Agricultural and Wood Industry Waste Utilization

Injection Molding of Highly Filled Polypropylene-based Biocomposites. Buckwheat Husk and Wood Flour Filler: A Comparison of Agricultural and Wood Industry Waste Utilization

Characterization of Rice Husk Fiber-Reinforced Polyvinyl Chloride Composites under Accelerated Simulated Soil Conditions

A critical review on mechanical and morphological characteristics of injection molded biodegradable composites

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