Mechanical and Physical Properties of Wood/Polyethylene Composite Reinforced With Tio2 Nanoparticles

Ghalehno, Mohammad Dahmardeh; Kord, Behzad; Sheshkal, Babak Nosrati

doi:10.1590/01047760202026042753

Cited by 6 publications

(6 citation statements)

References 23 publications

(27 reference statements)

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“…These fluctuations are thought to be caused by the formation of agglomerates due to the high usage of fillers. Similar results have been reported, especially in the study using nano TiO2 at a 5% level (Ghalehno et al 2020). Achieving uniform distribution with a high usage amount of nanoparticles is difficult because of their high surface energy.…”

Section: Mechanical Properties Of Wpcssupporting

confidence: 87%

“…It is thought that this increase is because of the higher contact surface between the polymer matrix and the particles obtained with the usage of nano TiO2 with a higher surface area. Similar results were obtained by others (Hazarika and Maji 2013;Kaymakci 2019;Ghalehno et al 2020). Kaymakçı (2019) stated that this improvement was because the composites that contained TiO2 had a harder structure than the groups that did not contact the mineral particles.…”

Section: Mechanical Properties Of Wpcssupporting

confidence: 78%

“…2-c/d support the agglomeration of TiO2 nanoparticles. Previous studies reported similar results (Ashori and Nourbakhsh 2011;Deka and Maji 2011;Ghalehno et al 2020).…”

Section: Mechanical Properties Of Wpcssupporting

confidence: 75%

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Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

Basboga

2023

BioRes

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This study investigated the effects of Iroko wood flour (WF) and nano-titanium dioxide (TiO2) concentration on the properties of polypropylene (PP)-based composites, including accelerated weathering resistance, tribological behavior, thermal stability, physical characteristics, mechanical strength, morphological features, color changes, and surface roughness. The results showed that the presence of WF and TiO2 significantly influenced the density, hardness, thermal stability, crystallinity, coefficient of friction, and wear rate of the composites. Both fillers positively impacted the tensile strength, flexural strength, and flexural modulus of the composites, although the elongation at break values decreased. TiO2 addition enhanced thermal stability and protection against UV radiation, whereas using wood flour negatively affected color properties. Moreover, the surface roughness of the composites was affected by weathering time and wood flour content. These findings highlight the potential of WF and TiO2 as effective fillers for enhancing PP-based composites’ properties and weathering resistance.

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Section: Mechanical Properties Of Wpcssupporting

confidence: 87%

Section: Mechanical Properties Of Wpcssupporting

confidence: 78%

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Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

Basboga

2023

BioRes

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“…Ghalehno et al [ 83 ] used HDPE and pine fiber to prepare WPCs. The effects of adding TiO 2 nanoparticles with different mass fractions on some properties of the composites were investigated.…”

Section: Other Methodsmentioning

confidence: 99%

A Review on Flexural Properties of Wood-Plastic Composites

Jian

Mohrmann

et al. 2022

Polymers

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Wood–plastic composite (WPC) is a kind of composite material that is made of plastic and wood fiber or wood powder. Because it is mothproof, is resistant to corrosion, and has plasticity, among other advantages, it has been researched and used increasingly in building materials. The flexural property of WPC is an important subject in evaluating its mechanical properties. In this paper, wood–plastic raw materials and processing technology are introduced; the internal and external factors of WPC which affect the flexural properties are analyzed; the different ways of enhancing the bending capacity, including the surface pretreatment, addition of different modifiers (compatibility agent and coupling agent) etc. are summarized; and the methods of operation and strengthening effect are analyzed. This work provides a reference for further research in related fields.

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“…Studies with natural fibers increased in the early 1990s due to the requirements of legislative authorities regarding the use and destination of synthetic fibers and resins derived from petroleum, as well as greater consumer awareness of preserving the environment (Silva, 2003). Thus, one of the potential uses of residual natural fibers is their destination for the production of various biomaterials, such as paper (Jin et al, 2022), cellulose nanofibers (Braga et al, 2021), biocomposites (Ghalehno et al, 2020) and energy (Bufalino et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Characterization of raw and thermochemically-treated mesocarp fibers of Oenocarpus bataua, an Amazon palm

Cruz

Dias

Oliveira

et al. 2023

CERNE

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Background: Patauá (Oenocarpus bataua Mart.) is a palm tree belonging to the botanical family Arecaceae that occurs throughout the Amazon. Like açaí, an edible pulp is extracted from its fruits, remaining a fiber-rich waste. Revealing the potential of such raw or thermochemically modified fibers for producing bioproducts is a novelty in the literature. Therefore, this work aimed to characterize patauá fibers in natural and alkali-treated conditions to support future bioproduct applications. Alkaline treatments were performed under mechanical stirring combining two NaOH levels (5 and 10%) and two temperatures (80 and 100°C). Morphological characterization was performed by light microscopy and scanning electron microscopy (SEM). The contents of the structural and non-structural chemical components were determined, and chemical groups were evaluated by Fourier-transform infrared spectroscopy (FTIR). The physical characterization included moisture content, apparent density, and water absorption tests. Results:The macerate revealed short fibers with typical elongated morphology, mean cell wall thickness (4.10 µm) greater than the mean lumen width (3.01 µm), and mean length of 445 µm. The alkaline treatments partially individualized the fibers from bundles, cleaned extractives from the surface, and unblocked superficial pits by removing silica-rich structures. They substantially removed non-cellulosic components, but FTIR showed condensed lignin exposed on the fiber surface. Density and water uptake increased concerning natural fibers. Patauá's short length and susceptibility to modification through thermochemical treatments that concentrated cellulose up to 50% indicated great potential for developing composites and nanofibers. Regardless of the NaOH content, 100°C was more efficient in concentrating cellulose. Conclusion:Patauá fibers have unique natural characteristics. They occur as flatted fiber bundles, have silicon-rich structures obstructing their superficial pits, and comprise more lignin than cellulose.

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Mechanical and Physical Properties of Wood/Polyethylene Composite Reinforced With Tio2 Nanoparticles

Cited by 6 publications

References 23 publications

Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

A Review on Flexural Properties of Wood-Plastic Composites

Characterization of raw and thermochemically-treated mesocarp fibers of Oenocarpus bataua, an Amazon palm

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