The Mechanical and Thermal Properties of Poly(ethylene-co-vinyl acetate) (PECoVA) Composites with Pristine Dolomite and Organophilic Microcrystalline Dolomite (OMCD)

Chong, Lim Kean; Osman, Azlin Fazlina; Fauzi, Asfa Amalia Ahmad; Alrashdi, Awad A.; Halim, Khairul Anwar Abdul

doi:10.3390/polym13183034

Cited by 14 publications

(9 citation statements)

References 39 publications

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“…due to their direct contact with the human body, polymers utilized in biomedical applications must exhibit biocompatibility and non-toxicity. Additionally, they should meet specific essential requirements, such as comfort and protection of human tissues [1,2]. uhMWPe polymers have been found to be beneficial in biomedical applications due to its biocompatibility, durability, toughness and high wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrate Acid Treated Dolomite on the Tensile Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) Composites

Abdullah,

Saleh,

Mohammad

et al. 2024

Archives of Metallurgy and Materials

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Ultra-High Molecular Weight Polyethylene (UHMWPE) polymers have been used in biomedical applications due to its biocompatibility, durability, toughness and high wear resistance. To enhance the mechanical properties, various types of minerals are commonly utilized as fillers in UHMWPE. One of the minerals is dolomite, which has been recognized as a valuable mineral with versatile applications, particularly in the field of biomedical applications. This paper presents the tensile properties of UHMWPE composites that filled with dolomite and treated-dolomite at various filler loading (i.e., 1-5 wt.%). Nitric acid and diammonium phosphate were used to treat the dolomite. From the results, the peaks of the FTIR spectrum displays carbonate (CO3–2), phosphate (PO4–3) and hydroxyl (OH–) groups in the ct-dolomite powder sample while the XRD pattern reveals that using dolomite treated with 1M nitric acid resulted in the presence of calcium hydroxide phosphate (Ca10(PO4)5(OH)) and MgO. For tensile strength, UHMWPE/ct-dolomite composites show better tensile strength than the pure UHMWPE composites. Treated improve the dolomite filler and resulted in significantly better matrix-filler interfacial interactions and improve the properties.

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Section: Introductionmentioning

confidence: 99%

Effect of Nitrate Acid Treated Dolomite on the Tensile Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) Composites

Abdullah,

Saleh,

Mohammad

et al. 2024

Archives of Metallurgy and Materials

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“…It has been reported that the use of 5% MMT as a filler can improve the mechanical and thermal barrier properties of Nylon 6, and similarly, the addition of nano-calcium-carbonate and nanoclay to high-density polyethylene (HDPE) can significantly increase the modulus of elasticity [55,56]. Also, dolomite as filler was able to improve the mechanical and thermal properties of various polymeric materials [57,58].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Melamine Formaldehyde Foam and a Melamine-Formaldehyde-Organo-Clay Nanocomposite and Hybrid Composites

Gürses,

Şahin

2023

Minerals

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Mineral fillers can be added to thermoset polymers to improve thermal conductivity and deformation behavior, shrinkage, impact strength, dimensional stability and molding cycle time. This study aims to prepare various hybrid composites (MFHCs) using melamine formaldehyde foam (MF), a melamine formaldehyde organo-clay nanocomposite (MFNC) and also pumice as primary filler, and gypsum, kaolinite and a hollow glass sphere as secondary filler. It also focuses on the study of some mechanical properties and thermal conductivities, as well as their microscopic and spectroscopic characterization. For this, firstly, organo-clay was prepared with the solution intercalation method using montmorillonite, a cationic surfactant and long-chain hydrocarbon material, and then was produced using a melamine formaldehyde nanocomposite with in situ synthesis using a melamine formaldehyde pre-polymer and organo-clay. Finally, hybrid composites were prepared by blending various minerals and the produced nanocomposite. For morphological and textural characterization, both FTIR spectroscopy and XRD spectra, as well as SEM and HRTEM images of the raw montmorillonite (MMT), organo-montmorillonite (OMMT), pure polymer (MF) and prepared hybrid composites, were used. Spectroscopic and microscopic analyses have shown that materials with different textural arrangements and properties are obtained depending on effective adhesion interactions between polymer–clay nanocomposite particles and filler grains. Mechanical and thermal conductivity test results showed that melamine-formaldehyde-organo-clay nanocomposite foam (MFCNC) exhibited a very good thermal insulation performance despite its weak mechanical strength (λ: 0.0640 W/m K). On the other hand, among hybrid composites, it has been determined that the hybrid composite containing hollow glass beads (MFCPHHC) is a material with superior properties in terms of thermal insulation and mechanical strength (λ: 0.642 W/m K, bulk density: 0.36 g/cm3, bending strength: 228.41 Mpa, modulus of elasticity: 2.22 Mpa and screw holding resistance: 3.59 N/mm2).

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“…In Malaysia, dolomite is known as "Batu Reput". This natural mineral rock can be abundantly found in Perlis, the northwestern part of Peninsular Malaysia [3]. Perlis's dolomite is an alkaline earth oxide with a primary composition of CaMg(CO3)2 and minor impurities such as ferrite and silica.…”

Section: Introductionmentioning

confidence: 99%

“…Perlis's dolomite is an alkaline earth oxide with a primary composition of CaMg(CO3)2 and minor impurities such as ferrite and silica. It also contains magnesium ore that is only active when calcined at temperatures above 850°C and under atmospheric pressure [3]. Due to its low cost, abundancy and non-toxicity, the use of dolomite as mineral filler in polymer composite is starting to increase.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its low cost, abundancy and non-toxicity, the use of dolomite as mineral filler in polymer composite is starting to increase. However, the use of dolomite in its pristine form may not improve the properties of the polymeric matrices since its particles exist in the agglomerated structure [3]. Agglomerated filler causes poor interfacial interactions between matrix and filler phase, leading to non-homogeneous polymer composite.…”

Section: Introductionmentioning

confidence: 99%

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Size Reduction of Dolomite into Nano-Size Range through Milling and Tip-Sonication Processes

Osman

Fauzi

Amin

et al. 2022

MSF

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Dolomite has great potential to be employed as filler or nanofiller in polymer composite/nanocomposite system. However, the research on dolomite as filler or nanofiller in polymer composite is still immature, requiring further investigations on how to optimize the dispersion of the dolomite in the polymer matrix, thus improving its properties. Particle size reduction of dolomite can be an efficient approach to increase its surface area and facilitate its dispersion and distribution within polymer matrix in order to develop homogeneous composite/nanocomposite system. In this study, the dolomite in pulverized form was obtained from Perlis Dolomite Industry, Malaysia with the average particle size of 150μm. In order to reduce the size of this dolomite, we have initially employed the planetary ball milling method. Results indicate that the particle size of dolomite has been reduced from 150μm to 2μm after subjected to ball milling process. This shows that upon ball milling procedure, the size of dolomite particle is still in micronmeter. Next, the ball milled dolomite was subjected to tip-sonication process to obtain dolomite in nanosize range. Several tip-sonication parameters, which were; amplitude and number of sonication repetition were applied in order to select the best parameters that can produce the finest dolomite powder. SEM and TEM were used to characterize the microstructure of the raw dolomite and the size reduced dolomite. Our results show that when the ball milled dolomite was tip-sonicated, much smaller particle size was obtained. Dolomite with the smallest particle size (~200nm) was obtained when the tip-ultrasonication was performed 3 times at amplitude of 50. These findings indicate that the combination of ball milling and tip-sonication is an efficient method to produce very fine dolomite particles, up to nanosize range. Furthermore, it is a clean, simple method and not involved any toxic and harmful chemicals.

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The Mechanical and Thermal Properties of Poly(ethylene-co-vinyl acetate) (PECoVA) Composites with Pristine Dolomite and Organophilic Microcrystalline Dolomite (OMCD)

Cited by 14 publications

References 39 publications

Effect of Nitrate Acid Treated Dolomite on the Tensile Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) Composites

Effect of Nitrate Acid Treated Dolomite on the Tensile Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) Composites

Preparation of Melamine Formaldehyde Foam and a Melamine-Formaldehyde-Organo-Clay Nanocomposite and Hybrid Composites

Size Reduction of Dolomite into Nano-Size Range through Milling and Tip-Sonication Processes

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