Characterization of Zinc Oxide-Urea Formaldehyde Nano Resin and Its Impact on the Physical Performance of Medium-Density Fiberboard

Gul, Waheed; Shah, Syed Riaz Akbar; Khan, Afzal; Pruncu, Catalin I.

doi:10.3390/polym13030371

Cited by 12 publications

(3 citation statements)

References 26 publications

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“…Many researchers have attempted to improve the mechanical and physical properties of MDF by adding scavengers, additives and reactive agents [ 7 ]. Another group of researchers introduced the nanoparticles concept for improving the effectiveness of this composite [ 8 ]. Though the researchers had enhanced results in some aspects related to MDF, still there seems to be much room for its improvement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide Nanoparticles on the Physical and Mechanical Properties of Medium Density Fiberboard

Gul

Alrobei

2021

Polymers

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In this research, the special effects of graphene oxide nanoparticle charging (0, 2, 4, 6, wt.%) on the properties of medium-density fiberboard were examined. Physical and mechanical properties of the panels were determined conferring the method of European Norm standards. The consequences exhibited substantial enhancement in mechanical properties, explicitly in modulus of rupture, modulus of elasticity and internal bonding for 2–6% nanoparticle addition in a urea–formaldehyde resin. The mechanical properties, i.e., internal bond, modulus of elasticity and modulus of rupture were improved by 28.5%, 19.22% and 38.8%, respectively. Results also show a clear enhancement in thickness swelling and water absorption. The physical properties of thickness swelling, water absorption and thermal conductivity were improved up to 50%, 19.5% and 39.79%, respectively. The addition of graphene oxide nanoparticles strongly affected the curing time of the urea–formaldehyde resin and improved its thermal stability.

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Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide Nanoparticles on the Physical and Mechanical Properties of Medium Density Fiberboard

Gul

Alrobei

2021

Polymers

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“…In the works of researchers P. Cademartori et al (2018), W. Gul et al (2021), it is established that the experience of using magnesium oxide for formaldehyde adsorption is still insubstantial, but there is interest in using nanoparticles of other metals to reduce the toxicity of particle boards. The positive effect of aluminium, iron, and zinc oxide nanoparticles on the bind-ing of free formaldehyde when the latter were introduced into the UF resin solution was observed in the studies by M. Salem et al (2013), S. Dinesh Ram et al (2022).…”

Section: Spectrummentioning

confidence: 99%

Untitled

2023

Ukr. j. for. wood sci.

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The examination of plant resistance to drought is becoming increasingly relevant due to global warming. All species of the genus Aristolochia L. possess high decorative qualities and play an important role in natural ecosystems. However, under conditions of temperature imbalance, their ornamental value may decrease due to leaf turgor loss and even leaf shedding. The purpose of the paper is to highlight the results of studies on the drought resistance assessment of Aristolochia L. plant species to identify the most promising taxa suitable for cultivation in the city of Kyiv. The study was conducted in 2022 on three species of vines: Aristolochia macrophylla Lam., A. tomentosa Sims., A. manshuriensis Kom., which grow in the M.M. Gryshko National Botanical Garden (Kyiv). The study presented results on leaf hydration parameters, water deficit, water-holding capacity of leaves, electrical conductivity, and specific leaf area conducted in the Plant Physiology and

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Section: Spectrummentioning

confidence: 99%

Effect of magnesium nanoparticles on formaldehyde emissions from wood composite materials

Sedliačik,

Pinchevska,

Lopatko

et al. 2023

Ukr. j. for. wood sci.

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For the production of wood composite materials, adhesives based on cheap and affordable, but harmful urea-formaldehyde resins are mainly used. Given the substantial production volumes of such materials, it is important to find environmental solutions to reduce formaldehyde emissions during their pressing and subsequent operation. The purpose of the study was to present the results of a study on the use of magnesium oxide nanoparticles to bind unreacted formaldehyde in wood composite materials. Analysis of methods for manufacturing metal nanoparticles allowed determining a priority method that allows obtaining ultrafine structures with a size not exceeding 100 nm, namely, the method of volumetric electric spark dispersion of metals in a liquid. Investigating the morphology of magnesium nanoparticles allowed determining that they have an almost crystalline form formed from the vapour phase, with an average particle length not exceeding 100 nm. The results of spectral analysis of the element composition in the nanophase, specifically magnesium and oxygen, demonstrated that the magnesium content does not exceed 32.2%, while oxygen constitutes 67.78%. This indicates that divalent magnesium oxide does not have a pronounced metallic phase, which would interfere with the sorption processes of formaldehyde. The conducted examinations of formaldehyde emission of samples of particle boards with modified magnesium oxide nanoparticles in concentrations of 2% and 8% glue based on urea-formaldehyde resin showed mixed results. Compared to the control samples, the formaldehyde level remained almost unchanged on the second day of follow-up, and for a concentration of 2%, it even increased by 6%. However, by the sixteenth and ninetieth day, a reduction in the level of free formaldehyde emissions was observed at 19% and 22% respectively. The results obtained can be used to improve the production of non-harmful particle boards with improved properties

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Characterization of Zinc Oxide-Urea Formaldehyde Nano Resin and Its Impact on the Physical Performance of Medium-Density Fiberboard

Cited by 12 publications

References 26 publications

Effect of Graphene Oxide Nanoparticles on the Physical and Mechanical Properties of Medium Density Fiberboard

Effect of Graphene Oxide Nanoparticles on the Physical and Mechanical Properties of Medium Density Fiberboard

Untitled

Effect of magnesium nanoparticles on formaldehyde emissions from wood composite materials

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