Influence of natural fillers on physico-mechanical properties of luffa cylindrica/ polyester composites

Dhanola, Anil; Bisht, Anand Singh; Kumar, Anil; Kumar, Aman

doi:10.1016/j.matpr.2018.04.107

Cited by 30 publications

(21 citation statements)

References 22 publications

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“…However, untreated LNFC exhibited around 14% higher water uptake, compared to treated LNFC, which indicated that the latter had a better compatibility with the matrix [59,63]. Additionally, void content and density of the material significantly affected its water absorption [24].…”

Section: Water Absorptionmentioning

confidence: 98%

“…Matrices considered in recent LNFC studies are listed in Table 3. LNFC studies have involved diverse polymeric matrices with different weight ratios (fiber volume fraction), which ranged from 2 wt.% to 50 wt.%, however, the most common weight composition was 30 wt.% [24,49,50,62,70]. Although the majority of studies considered luffa as rectangular mat, some utilized it as randomly chopped fibers between 2 mm and 6 cm.…”

Section: Matrices Selected For Lnfcsmentioning

confidence: 99%

“…Hence, the weight of these samples is measured and compared with their initial weight in order to calculate the weight change ratio [123,124]. Water absorption property was tested for LNFCs with several matrices such as: epoxy [49,50,59,62,63], polyester [24,60,66,95], polypropylene [68], vinyl ester [64], polylactic acid [80], pre-gelatinized cassava starch [101], as well as pure luffa bundles [27,55]. Since luffa fibers are hydrophilic in nature, their addition into a matrix increased the overall water absorption of the NFC due to the existence of homocellulose and pectin.…”

Section: Water Absorptionmentioning

confidence: 99%

“…Natural fibers (NFs) are found in many parts of a plant, e.g., fruit, bast, leaf, trunk, roots, and so on. Throughout the decades, these natural fibers have been widely utilized in countless applications due to their advantages, as they are strong, lightweight, tough, recyclable, biodegradable, abundant in nature, and have negligible cost and low density [20][21][22][23][24][25][26][27]. Additionally, their environmental advantages include decreased respiratory and dermal irritation, improved energy consumption, less wear and abrasion on tools, and minimal health hazards.…”

Section: Introductionmentioning

confidence: 99%

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Recent Developments in Luffa Natural Fiber Composites: Review

et al. 2020

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Natural fiber composites (NFCs) are an evolving area in polymer sciences. Fibers extracted from natural sources hold a wide set of advantages such as negligible cost, significant mechanical characteristics, low density, high strength-to-weight ratio, environmental friendliness, recyclability, etc. Luffa cylindrica, also termed luffa gourd or luffa sponge, is a natural fiber that has a solid potential to replace synthetic fibers in composite materials in diverse applications like vibration isolation, sound absorption, packaging, etc. Recently, many researches have involved luffa fibers as a reinforcement in the development of NFC, aiming to investigate their performance in selected matrices as well as the behavior of the end NFC. This paper presents a review on recent developments in luffa natural fiber composites. Physical, morphological, mechanical, thermal, electrical, and acoustic properties of luffa NFCs are investigated, categorized, and compared, taking into consideration selected matrices as well as the size, volume fraction, and treatments of fibers. Although luffa natural fiber composites have revealed promising properties, the addition of these natural fibers increases water absorption. Moreover, chemical treatments with different agents such as sodium hydroxide (NaOH) and benzoyl can remarkably enhance the surface area of luffa fibers, remove undesirable impurities, and reduce water uptake, thereby improving their overall characteristics. Hybridization of luffa NFC with other natural or synthetic fibers, e.g., glass, carbon, ceramic, flax, jute, etc., can enhance the properties of the end composite material. However, luffa fibers have exhibited a profuse compatibility with epoxy matrix.

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Section: Water Absorptionmentioning

confidence: 98%

Section: Matrices Selected For Lnfcsmentioning

confidence: 99%

Section: Water Absorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent Developments in Luffa Natural Fiber Composites: Review

et al. 2020

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“…Natural fibers and shells, such as fruit shells, jute, hemp, bananas, coconut fibers, and so on, are lightweight, eco‐friendly, highly flexible, biodegradable, affordable, lightweight, and easy to handle. In addition, they exhibit high strength, good thermal properties, and high toughness . Some of the disadvantages associated with natural fibers are their weak binding with the matrix and wettability owing to their hydrophilic nature .…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of apricot kernel shell waste and its effect on phenolic novolac epoxy composites

Kocaman

2020

J of Applied Polymer Sci

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Apricot kernel is one of the most abundant types of agro-waste in the eastern Anatolia regions of Turkey. In this study, apricot kernel shells (AKShs) were chemically modified using levulinic acid (LA) for the first time, and their potential for developing biobased composites was evaluated. Phenol novolac epoxy resin was used as matrix owing to its high thermal and superior adhesion properties. Shell treatments to improve interfacial bonding were carried out using alkali, acetic acid, and LA. These treatments were aimed at improving the mechanical properties, wettability, and bonding of the composites.Moreover, these treatments could prevent the deterioration of the fiber/matrix interface (hydrophilic and hydrophobic effect) and mitigate damage to the fiber during production, which is one of the main reasons for the reduced strength of the composites. The thermal characteristics, crystallinity index, chemical composition, and surface morphology of the untreated and chemically modified AKShs and composites were studied by thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy, respectively. In addition, the composites were analyzed in detail using mechanical tests and contact angle measurements. The chemical treatment using LA resulted in composites with superior mechanical behavior.

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