Effect of alkali treatment on microstructure and mechanical properties of coir fibres, coir fibre reinforced-polymer composites and reinforced-cementitious composites

Yan, Libo; Chouw, Nawawi; Huang, Liang; Kasal, Bohumil

doi:10.1016/j.conbuildmat.2016.02.182

Cited by 284 publications

(125 citation statements)

References 42 publications

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“…It can be deduced that the treated fibers contributed significantly to the flexural properties of the composites. This was also proved by Yan et al They investigated the effectiveness of alkali treatment on the mechanical properties of coir fiber reinforced epoxy composites. They claimed that the flexural strength of the treated coir fiber/epoxy composites was 16.7% higher than that of the untreated coir composites.…”

Section: Resultsmentioning

confidence: 64%

The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

et al. 2019

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The tensile, flexural, and morphological properties of Napier fiber reinforced nanomodified epoxy composites were investigated. Untreated and alkali‐treated Napier fibers, as well as nanoclay and epoxy resin, were used to fabricate Napier fiber reinforced nanomodified epoxy composites by using cold press compression machines. Napier fiber was treated with 5% dilute sodium hydroxide (NaOH) solution for 6 h. Varying amounts of nanoclay filler (3, 5, and 10 wt%) were mixed with the epoxy resin prior to fabricating the Napier fiber reinforced nanomodified epoxy composites. The results of mechanical testing indicated that the alkali‐treated Napier fiber reinforced nanomodified epoxy composites incorporating 5 wt% nanoclay exhibited the highest flexural and tensile properties. Morphological analysis was then conducted to further analyze the fractured specimens following the mechanical tests. The scanning electron microscope images of the Napier fiber reinforced nanomodified epoxy composites that contained 5 wt% nanoclay revealed good interfacial bonding between the matrix and the reinforcement.

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Section: Resultsmentioning

confidence: 64%

The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

et al. 2019

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“…7,8 The characteristics of fiber reinforced composite called as fibrous composite substances are especially dependent upon the properties of fiber and its microstructural parameters such as diameter and length of the fiber, 9,10 fiber propagation, fiber orientation, and fiber volume division. [11][12][13][14][15][16][17] In recent decades, researchers are more intrigued to find the use of biodegradable materials, including natural fibers, because they are more durable, recyclable, and cheap. The different mechanical characteristics of naturally fiber reinforced composites (NFRCs) are tested and obtained as a replacement for synthetic fiber reinforced composites (SFRCs).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on dynamic mechanical and thermal characteristics ofCoccinia Indicafiber reinforced polyester composites

Balu

Subramani²,

Palaniappan

et al. 2020

Journal of Engineered Fibers and Fabrics

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Due to superior material properties of fiber reinforced composites, they are utilized in many structural fabrications. Even though many studies have been reported about various fiber reinforced composites, it is indeed to find more eco-friendly composites for modern applications. So, developing the new fiber reinforced composites and revealing its mechanical properties are vital. In this examination, the natural fiber reinforced polymer matrix composite was prepared by compression molding method. The natural fiber named as Coccinia Indica was used to fabricate the fiber reinforced composites. The impact of different fiber length on dynamic mechanical properties like loss modulus, storage modulus, and loss of weight in fiber reinforced composites was predicted using dynamic mechanical analysis and thermogravimetric analysis. The outcomes revealed that fiber length of 30 mm shows better values in storage modulus and nominal loss modulus owing to higher interfacial bonding among fiber and matrix. However, in other fiber lengths, the storage modulus depicts poor result and high loss modulus is due to inefficient stress transfer.

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“…Advanced polymer composites have other outstanding properties, such as high specific strength, excellent resistance to fatigue and creep, and easy molding into complex shapes and designs. The polymer composites are successfully applied in the aerospace, construction, electronics, and automotive fields, and as a result, they are obviously exposed to various radiations like X‐rays and gamma rays . The interaction of the ionizing radiations with the polymer composites can cause some defects in the properties of these materials.…”

Section: Introductionmentioning

confidence: 99%

Study of gamma‐ray radiation effects on series of bisphthalonitrile resins: Thermomechanical, mechanical, and thermal properties

Dayo

Zhang

Wang

et al. 2019

J of Applied Polymer Sci

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The bisphthalonitrile (PN) thermosets series (poly(Baph), poly(Bafph), and poly(Bzph)) were prepared and subjected to 100 and 500 kGy γ‐ray irradiation dose from cobalt‐60 (60Co) as a source. The main objective of this present study was to investigate the effects of gamma irradiation on the chemical structure, thermomechanical, mechanical, and thermal stabilities, which were studied by using a Fourier transform infrared (FTIR), dynamic mechanical analysis, bending test, and thermogravimetric analysis, respectively. The PN resins characteristics bands, namely, nitrile, triazine ring, and phthalocyanine, were not affected on γ‐ray irradiation. However, remarkable changes were observed in the chemical structures of benzene, alkyl and CF3, which indeed slightly declined the thermal stabilities, thermomechanical and flexural properties. The decrease in properties could be ascribed to the scission of molecular chains and rupture of chemical bonds of PN resin as confirmed by the FTIR. The poly(Bafph) showed a maximum decline in the thermal stabilities and mechanical properties due to the existence of CF3 in the polymer skeleton, which could not be crosslinked again once scission occurs under radiation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48313.

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Effect of alkali treatment on microstructure and mechanical properties of coir fibres, coir fibre reinforced-polymer composites and reinforced-cementitious composites

Cited by 284 publications

References 42 publications

The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

The effect of nanomodified epoxy on the tensile and flexural properties of Napier fiber reinforced composites

Experimental investigation on dynamic mechanical and thermal characteristics ofCoccinia Indicafiber reinforced polyester composites

Study of gamma‐ray radiation effects on series of bisphthalonitrile resins: Thermomechanical, mechanical, and thermal properties

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