Structural properties and mechanical performance of <i>Salvadora persica</i> L. (Miswak) reinforced polypropylene composites

Savaş, Soner

doi:10.1002/pc.24939

Cited by 8 publications

(9 citation statements)

References 66 publications

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“…This structure is a typical structure of cellulose; it has been shown to have highly irregular porous fibers. The results were similar to those in the study conducted by Soner in which SEM of miswak powder was performed [ 26 ].…”

Section: Discussionsupporting

confidence: 88%

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Mechanical and antibacterial properties of conventional pit and fissure sealants with addition of miswak fibers

Khan,

Muhammad,

Liaqat

et al. 2023

Biomaterial Investigations in Dentistry

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The occlusal surface of a tooth is affected by the development of biofilm in pits and fissures as bacteria and food particles accumulate in its complex structure. In this study, miswak fibers containing cellulose and antimicrobial extract were incorporated in commercial pit and fissure sealants. The miswak powder was characterized by different analytical techniques. The powder was mixed in different ratios (0–5%) into a pit and fissure sealant to result in five sealants (Groups 0–5), and their mechanical properties i.e. flexural strength, compressive strength, and Vickers hardness were evaluated. The sealants were also evaluated against streptococcus mutans oral pathogenic bacteria. SEM analysis confirmed irregular shape and micron-size particles of miswak powder. The infrared spectral analysis and X-ray differential peaks showed characteristic peaks related to miswak fibers. The particle appearance increased in prepared pits and fissure sealants with higher loading of miswak powder in SEM analysis. The flexural strength, compressive strength, and Vickers hardness values were obtained in the range of 148–221 (±16.6: p -value < 0.001) MPa, 43.1–50.3 MPa (±1.7: p- value <0.001), and 15.2–21.26 VHN (±0.56: p -value <0.001) for control and prepared sealant specimens respectively. In the antibacterial study, the zone of inhibitions increased with increased content of miswak from 15.6 ± 0.45 mm (Group 1) to 20.3 ± 0.32 mm (Group 5). The MIC was calculated to be 0.039%. The prepared experimental sealant had acceptable mechanical and good antibacterial properties therefore it could be recommended as an efficient pit and fissure sealant.

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Section: Discussionsupporting

confidence: 88%

“…Miswak is mainly composed of cellulose, hemicelluloses, and lignin [ 20 ] and contains other beneficial components like antibacterial agents, abrasives, cleansers, astringents, fluoride, and enzyme inhibitors [ 20 ]. Natural fiber has recently been a field of active research for strengthening resin composite materials [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and antibacterial properties of conventional pit and fissure sealants with addition of miswak fibers

Khan,

Muhammad,

Liaqat

et al. 2023

Biomaterial Investigations in Dentistry

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“…These findings suggest that HDTBP-Pal can be better dispersed than APTMS-Pal or Purified-Pal. Contac angle measurments have been reported for other clays such as montmorillonite (MMT) [41][42][43], kaolinite [44] and smectite [45]. The values of the surface energy of Pal and modified Pal are on the same order for MMT (68.65 mJ m 22 ) and modified MMT (53.34 mJ m 22 ) with octadecylamine reported in the literature [41].…”

Section: Calculation Of Surface Energymentioning

confidence: 70%

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

2017

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The effect of surface modification of Palygorskite (Pal) on the morphology and the mechanical and thermal properties of Nylon 6/Palygorskite nanocomposites, prepared by melt compounding, was investigated. A Pal mineral was purified, characterized, and surface modified separately with 3‐Aminopropyl trimethoxysilane and tributylhexadecyl‐phosphonium bromide in order to produce polymer nanoreinforcements. Organo‐Pals were characterized through SEM/EDX, FTIR, TGA, and XPS; surface energy was also determined. Experimental evidence confirmed the grafting of surface agents on the Pal surface; as expected, organo‐Pals exhibited high thermal stability and lower surface energy. Nylon 6/clay nanocomposites were melt‐compounded with different Pals at low Pal loadings. Pal dispersion was assessed by SEM and the thermal and mechanical properties were determined. In general, Pal exhibiting lower surface energy produced Nylon 6/Pal nanocomposites with improved Pal dispersion and properties. Pal particles favored the formation of γ crystalline form and increased the decomposition temperature of Nylon 6. The Pal aspect ratio in the Nylon 6/Pal nanocomposites was estimated from the experimental values of the elastic modulus using the Halpin–Tsai model; in addition, the Pal‐Nylon 6 interactions were estimated from the experimental values of the yield strength of nanocomposites with the Pukanszky's model. POLYM. COMPOS., 39:E1531–E1543, 2018. © 2017 Society of Plastics Engineers

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“…Neat PLA was expected to record the lowest water absorption due to its hydrophobic nature. This was expected since PLA/MF30 had the highest cellulose content in the miswak fiber, which increases the penetration of water by capillary mechanism [44]. The increase in water absorption for hydrophilic fiber in composite samples was predicted since the PLA/MF molten flow fills the mold before it crystallizes during composite processing.…”

Section: Water Absorption and Thickness Swelling Of Pla/mfmentioning

confidence: 97%

Physical, Mechanical, and Thermal Properties and Characterization of Natural Fiber Composites Reinforced Poly(Lactic Acid): Miswak (Salvadora Persica L.) Fibers

Diyana

Abdan

Sapuan

et al. 2022

International Journal of Polymer Science

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7000 years ago, miswak fiber (MF) was used as a toothbrush for oral care. However, since the emergence of plastic materials, it monopolized the oral care industry. The increment of plastic products also promotes accumulation of plastic wastes after its disposal. Thus, many researchers have turn to biodegradable products to reduce this problem. The aim of this study is to investigate the chemical, physical, and mechanical properties of MF as reinforcement in composites that are suitable to replace the toothbrush materials. The MF was reinforced in PLA composite with different weight percentage (0%, 10%, 20%, and 30%) and undergoes several types of testing. The chemical results show that there were high presence of cellulose in the fiber which could act as medium to transfer stress load equally from fiber to matrix. However, the results show low cellulosic contents in MF that affects the poor interfacial bonding between fiber and matrix. Physical properties shows a positive indication to be used as a toothbrush handle. As the fiber content increases, the density also increased. SEM micrographic illustrated the presence of voids as the cause for reduction in mechanical properties of composites. The mechanical results show the proposed material is comparable to the materials used in commercial applications. As for the thermal result, the TGA test melting point of the proposed composite material was comparable to the pure PLA, which means the proposed material can use similar processing temperature as PLA. DSC shows that Tg of PLA/MF composite is found to be similar to Tg in loss modulus of composites. DMA finding found that PLA/MF30 have the highest storage modulus 2062 MPa and the lowest tan δ 0.6 among PLA/MF composites. This concludes that there is a possibility of using these materials as an alternative in composites and increase the fiber strength by using pretreatments and/or compatibilizer.

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Structural properties and mechanical performance of Salvadora persica L. (Miswak) reinforced polypropylene composites

Cited by 8 publications

References 66 publications

Mechanical and antibacterial properties of conventional pit and fissure sealants with addition of miswak fibers

Mechanical and antibacterial properties of conventional pit and fissure sealants with addition of miswak fibers

The effect of surface modification of Palygorskite on the morphology, mechanical, and thermal properties of Nylon 6/Palygorskite nanocomposites prepared by melt compounding

Physical, Mechanical, and Thermal Properties and Characterization of Natural Fiber Composites Reinforced Poly(Lactic Acid): Miswak (Salvadora Persica L.) Fibers

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