Improvement of the interface bonding between date palm fibers and polymeric matrices using alkali-silane treatments

Oushabi, A.; Hassani, Fahd Oudrhiri; Abboud, Y.; Sair, Said; Tanane, Omar; Bouari, Abdeslam El

doi:10.1007/s40090-018-0162-3

Cited by 43 publications

(33 citation statements)

References 22 publications

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“…Rougher fiber surface provides more spots to anchor. Alkaline treatment is one of most frequently used methods to remove non-cellulosic components from the fiber surfaces, offering a clean and rough fiber topography, other than reducing the hydrophilicity for better chemical adhesion mechanism [ 41 , 42 ]. On the other hand, flow of the polymer resin filled into lumens, open pores, and free volumes within the cell wall has restricted shrinking and swelling of fibers, and thereby better dimensional integrity of composites.…”

Section: Interface Mechanismsmentioning

confidence: 99%

Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review

2021

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Plant fibers have become a highly sought-after material in the recent days as a result of raising environmental awareness and the realization of harmful effects imposed by synthetic fibers. Natural plant fibers have been widely used as fillers in fabricating plant-fibers-reinforced polymer composites. However, owing to the completely opposite nature of the plant fibers and polymer matrix, treatment is often required to enhance the compatibility between these two materials. Interfacial adhesion mechanisms are among the most influential yet seldom discussed factors that affect the physical, mechanical, and thermal properties of the plant-fibers-reinforced polymer composites. Therefore, this review paper expounds the importance of interfacial adhesion condition on the properties of plant-fiber-reinforced polymer composites. The advantages and disadvantages of natural plant fibers are discussed. Four important interface mechanism, namely interdiffusion, electrostatic adhesion, chemical adhesion, and mechanical interlocking are highlighted. In addition, quantifying and analysis techniques of interfacial adhesion condition is demonstrated. Lastly, the importance of interfacial adhesion condition on the performances of the plant fiber polymer composites performances is discussed. It can be seen that the physical and thermal properties as well as flexural strength of the composites are highly dependent on the interfacial adhesion condition.

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Section: Interface Mechanismsmentioning

confidence: 99%

Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review

2021

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“…Furthermore, the bands at 1650 and 1752 cm À1 are related to C═C stretching vibration inside phenol groups and C═O carbonyl stretching, respectively. [43] The graphene oxide spectrum also reveals the presence of C═O bands stretching vibration of carboxyl groups between 1600 and 1800 cm À1 and C─H bands at around 2000-3340 cm À1 . [65] Finally, both ─OH stretching vibrational modes of the hydroxyl group and CH─OH groups generally assigned at 3680 and 1410-1280 cm À1 , respectively, can be seen.…”

Section: Ftir Spectroscopymentioning

confidence: 98%

“…The first peak corresponds to the presence of ═C─H bonds and a weak aromatic C─H bond observed at 1136 cm À1 , whereas the other band at 1622 cm À1 is associated with aromatic C─C stretching. [43] The absorption bands shown in Figure 4 at 2962, 2920, and 2850 cm À1 are attributed to the C─H stretching vibration of ─CH 3 , ─CH 2 , and ─CH groups of the alkylated group in silane's molecules, respectively. This points to the presence of silane molecules grafted on the functionalized graphene oxide surface.…”

Section: Ftir Spectroscopymentioning

confidence: 99%

“…This increase is attributed to the intrinsic rigidity (stiffness) of graphene nanosheets particles; in general, a perfect single layer of graphene has a stiffness of 1.0 TPa. [43] However, at low filler content, graphene acts as a defect resulting in lower tensile properties. [43] Figure 9a also shows that the Young's modulus of the nanocomposites with 3 wt% of functionalized graphene nanosheets is highly modified, achieving the highest values of 3673 and 4013 MPa for graphene oxide nanosheets functionalized by OTES and GPTMS, which correspond to 17% and 25% increases, respectively, compared with the nanocomposites filled with graphene (2917 MPa).…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…[29] For this reason, and to substantially improve the dispersion/distribution of the graphene nanosheets within the matrix and create a strong connection at the graphene-glass fiber-matrix interface, it is necessary to modify the graphene surface using various chemicals. [42][43][44] Increasing the interfacial adhesion will contribute to improving the stress transfer between the fibers and the matrix, leading to better mechanical properties. [45] The functionalization of graphene oxide consists of a chemical attachment of the hydroxyl functional groups present in the basal planes and sheet boundaries of graphene-like ─OH, PhOH, and C═O to form other graphene oxide derivatives with specific functional groups.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Thermal Conductivity of Epoxy Resin Reinforced with Functionalized Graphene Nanosheets and Woven Glass Fabric

et al. 2021

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The reinforcing effects of functionalized graphene sheets (FGSs) on thermosetting epoxies are examined to understand the feasibility of these FGSs–epoxy nanocomposites in composite applications. The nanocomposites are prepared by compression molding with different graphene contents (0, 1, and 3 wt%) and different chemical treatments including FGSs and reduced graphene oxide (RGO) nanosheets. In addition, two silane molecules (octyltriethoxysilane [OTES] and glycidoxypropyltrimethoxysilane [GPTMS]) are used as coupling agents. Morphological analysis shows that the use of functionalized graphene oxide nanosheets in woven glass fabric/epoxy nanocomposites significantly improves the dispersion distribution of graphene nanosheets inside the matrix and increases their interfacial adhesion. The results reveal that the nanocomposites containing functionalized graphene nanosheets show the most promising improvement in terms of thermal and mechanical properties. In particular, Young's modulus increases by up to 17% and 25% with only 3% of functionalized graphene oxide using OTES and GPTMS, respectively. The result of the water droplet contact angle of the nanocomposites reinforced by graphene oxide functionalized by octyltriethoxysilane (OTES) shows an increase to a value of 105.80, indicating the super hydrophobic nature.

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Modification of Fibers and Matrices in Natural Fiber Reinforced Polymer Composites: A Comprehensive Review

ArunRamnath

Kushvaha

et al. 2022

Macromol. Rapid Commun.

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Application of natural fiber-polymer composites (NFPCs) in different industrial applications provides competitive edge due to their lightweight, higher specific mechanical properties than glass fibers, sustainability, and lower cost involved in production. There are certain challenges associated with natural fibers and their reinforcement in composites such as poor bonding between the fibers and matrix due to their contradictory nature of characteristics, moisture absorption, lower thermal properties, and poor interfacial adhesion between the natural fiber and polymer matrix. The challenges involved in NFPCs need to be overcome to produce materials with relatively equivalent properties to those of conventional composites and other metallic structures. Several researchers around the globe have conducted investigations with the primary attention being paid to the modification of natural fibers and matrix by employing surface treatments and other chemical treatment methods. In order to address the need for eco-friendly and sustainable materials in different domains, a comprehensive review on natural fibers and their sources, available matrix materials, modification techniques, mechanical and thermal properties of NFPCs, is needed for better understanding of the behavior of NFPCs. This work provides the information and holistic view of natural fiber-reinforced composites based on the results obtained from modification techniques, with the view of focusing the review in terms of different chemical and physical treatment techniques, modification of fibers and matrix, and enhanced mechanical and thermal properties in the composites.

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Improvement of the interface bonding between date palm fibers and polymeric matrices using alkali-silane treatments

Cited by 43 publications

References 22 publications

Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review

Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review

Mechanical Properties and Thermal Conductivity of Epoxy Resin Reinforced with Functionalized Graphene Nanosheets and Woven Glass Fabric

Modification of Fibers and Matrices in Natural Fiber Reinforced Polymer Composites: A Comprehensive Review

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