Selective micro wood reinforcements for bio-wood plastics deliberating mechanical and degradation properties

Raj, Sachin Sumathy; Elangovan, Elavarasan; Arulmozhi, P.; Murugan, N.

doi:10.1016/j.matpr.2023.04.154

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…The addition of the filler in the composite led to a decrease in the strength properties of the material, since filler particles filled the intermolecular space, breaking the integrity and bonds of the polymer fibers. Despite the fact that there are many studies showing that a plant filler improves mechanical characteristics due to the reinforcing effect [ 69 , 70 , 71 ], our data are in good agreement with the data obtained by other researchers in [ 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 ]. The more filler, the denser the structure of the material, which means less space is left for PVC molecules to straighten.…”

Section: Resultssupporting

confidence: 91%

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride

Samuilova,

Ponomareva,

Sitnikova

et al. 2024

Polymers

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To enhance the ecological properties of polyvinyl chloride (PVC) products, the fabrication of PVC-based composites using biofillers with acceptable performance characteristics could be considered. In this work, plant-filled PVC-based composite materials were fabricated and their optical, structural, thermal, and mechanical properties, depending on the nature of the filler, were studied. Spruce flour, birch flour, and rice husk were used as fillers. Optical measurements showed the selected technological parameters, allowing films with a uniform distribution of dispersed plant filler in the polymer matrix to be obtained. Using the plant fillers in PVC films leads to a reduction in strength characteristics; for instance, the tensile strength changed from 18.0 MPa (for pure PVC film) to ~7 MPa (for composites with 20 wt.% of fillers), and to ~5–6.2 MPa (for composites with 40 wt.% of fillers). Thermal investigations showed that the samples with plant fillers could be used at low temperatures without changing their operating characteristics. Thus, plant-filled PVC-based composite materials have a wide operating temperature range, from—65 °C to 150 °C. TGA analysis has demonstrated that the rice husk affected the thermal stability of the composites by increasing their thermal decomposition resistance. The ability to absorb water was observed during the investigation of water absorption of the samples. And the highest degree of water absorption (up to 160 mg/g) was detected for the sample with 40 wt.% of rice husk. In general, plant-filled polymer composites based on PVC can be used on an equal basis with unfilled PVC plastic compounds for some applications such as in construction (for example, for design tasks).

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Section: Resultssupporting

confidence: 91%

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride

Samuilova,

Ponomareva,

Sitnikova

et al. 2024

Polymers

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“…Recently, exploring ways to reuse waste products has become an attractive method of reducing pollution, saving energy, and saving material resources [1,2]. For instance, wood-powder-based composites have become a trend in green policies to reduce the use of plastics [3][4][5][6][7]. The wood powder (WP) is the bypass product, collected from the process of wood production.…”

Section: Introductionmentioning

confidence: 99%

“…Coconut sawdust is a waste product which is popular in South and South East Asia. Finding the optimal ways to reuse it could minimize pollution, save energy, and save materials and resources [1][2][3][4][5]. This report concentrates on studying the mechanical properties of coconut sawdust powder mixed with PP.…”

Section: Introductionmentioning

confidence: 99%

Injection Molding Condition Effects on the Mechanical Properties of Coconut-Wood-Powder-Based Polymer Composite

Thiem,

Nguyen,

Phan

et al. 2024

Polymers

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This study investigates the mechanical properties of coconut sawdust powder combined with polypropylene (PP). The effect of compatibility content, wood powder (WP) content, and injection molding parameters on the properties of coconut wood powder composite (WPC) is evaluated. The results could be used to figure out the optimal mechanical properties such as tensile strength, elongation, elastic modulus, and flexural strength by selecting suitable parameters and composition. The bonding between the WP particles and the PP matrix is good, and the WP is uniformly distributed across the composite matrix, as indicated in the scanning electron microscopy (SEM) results. Interestingly, with the presence of the compatibilizer oleamide, increasing the WP content from 20 wt.% to 40 wt.% did not result in WP accumulation in the composite matrix. Notably, at 20 wt.% WP, the elongation is the highest (at 7.40 wt.%), while at 30 wt.% WP, the elastic modulus reaches the highest value. The maximum ultimate tensile strength (UTS) value is obtained at 35 wt.% WP. Higher WP mostly results in greater flexural strength and shore D hardness. At 40 wt.% WP, the WPC achieves its peak shore D hardness of 77.6. The Taguchi results suggest that WP content is the most critical factor in the UTS value of coconut WPCs. The filling pressure ranks second, followed by the packing pressure. Finally, unlike the other characteristics, the melt temperature has a minimal impact on the UTS value.

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High Precision Ultrasonic Testing Method for Density of Engineering Plastics

Li,

Wang,

Sun

et al. 2024

Russ J Nondestruct Test

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The density of engineering plastics is a key parameter for ensuring their safety and reliability. In order to achieve rapid and high-precision on-site detection, a method based on the acoustic pressure reflection coefficient is proposed. First, finite element simulation analysis was conducted to obtain the acoustic field distribution during ultrasound propagation under water immersion conditions. The correlation between interface echo intensity and material density was determined. Optimal detection parameters were designed to reduce measurement errors caused by beam overlap and diffusion attenuation. A water immersion ultrasonic experimental system was constructed, and the measurement accuracy of the method was tested using chlorinated polyvinyl chloride pipes. The results show that, compared to the measurement results of the Archimedean drainage method, the maximum error of ultrasonic measurements does not exceed 1.7%, and the overall variance is less than 1.2%. The measurement accuracy of this method is compared with the regression results of different machine learning models. It is demonstrated that, compared to regression methods based on variable correlation, this method retains the advantages of high efficiency and low cost in ultrasonic density measurement, while achieving higher measurement accuracy. Additionally, it does not require a dataset for training support, making it promising and valuable for practical applications.

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Selective micro wood reinforcements for bio-wood plastics deliberating mechanical and degradation properties

Cited by 3 publications

References 18 publications

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride

Injection Molding Condition Effects on the Mechanical Properties of Coconut-Wood-Powder-Based Polymer Composite

High Precision Ultrasonic Testing Method for Density of Engineering Plastics

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