Performance of Sisal/Hemp Bio-based Epoxy Composites Under Accelerated Weathering

Krishnasamy, Senthilkumar; Ungtrakul, Thitinun; Muthukumar, Chandrasekar; Kumar, T. Senthil Muthu; Rajini, N.; Siengchin, Suchart; Pulikkalparambil, Harikrishnan; Ayrılmış, Nadir

doi:10.1007/s10924-020-01904-7

Cited by 62 publications

(32 citation statements)

References 52 publications

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“…Due to their polar surface character, natural fiber reinforcement shows lower compatibility with strongly apolar thermoplastic matrices [ 96 ]. Again, vapor and void creation during processing due to moisture content [ 94 , 97 ], photodegradation due to UV radiation [ 98 ], and poor resistance to moisture [ 99 ] can significantly affect the performance of the composite for outdoor application. A summary of the performance of hemp composite against moisture can be seen in Table 3 .…”

Section: Hemp Compositesmentioning

confidence: 99%

Hemp as a potential raw material toward a sustainable world: A review

Ahmed

Islam

Mahmud

et al. 2022

Heliyon

136

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Global warming as a result of climate change has become a major concern for people all over the world. It has recently drawn the attention of the entire conscious community, with the fear that if not addressed properly, it will result in the extinction of numerous species around the world. At the same time, it will pose a threat to human health, food security, living environment and standard of living. Thereby, possible solutions are being explored accordingly; regulations have been imposed in places binding green production practices, limiting the emission of CO 2 and emphasis is given on renewable resources along with the search for alternatives to carbon-positive materials. Cannabis sativa L. (hemp) has received a lot of attention because of its multipurpose usability, short production cycle, low capital demand in cultivation, possibility of carbon-negative transformation and easy carbon sequestering material. This paper reviews hemp as a very promising renewable resource including its potential uses in paper, textiles, composites, biofuel, and food industry.

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Section: Hemp Compositesmentioning

confidence: 99%

Hemp as a potential raw material toward a sustainable world: A review

Ahmed

Islam

Mahmud

et al. 2022

Heliyon

136

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“…From Figure 2a it can be seen that the jute exposed samples presented a change in the coloration of natural fibers, due to the moisture absorbed from the water spray and the photo degradation of matrix from the UV irradiation. It was shown in the literature that the aging causes physical–chemical changes of the fiber and matrix 36 . However, the composites modified with MWCNTs (see Figure 2b,d,f) presented only a slight change in their color.…”

Section: Resultsmentioning

confidence: 81%

Effect of ultraviolet radiation and water spraying on the mechanical properties of multi‐walled carbon nanotubes reinforced natural fiber and hybrid composites

Neto

Queiroz

Cavalcanti

et al. 2021

J of Applied Polymer Sci

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The main objective of this study was to investigate the effect of aging by ultraviolet radiation and water spray on the mechanical properties of natural fiber and hybrid composites. Pure jute, hybrid jute/glass, and glass fiber‐reinforced composites were fabricated. All these types of composites were further modified with 0.6 wt% of multi‐walled carbon nanotubes (MWCNTs) and their mechanical behavior was compared to the unmodified specimens. Tensile and flexural tests were used to measure the mechanical properties of unaged (control) and aged specimens. A scanning electron microscopy analysis was used to examine the fracture surfaces of the specimens tested. It was found that the aging process affected the mechanical properties of the composites studied in different ways. For jute and jute + MWCNT composites the properties decreased with increased exposure time. The hybrid jute/glass composites (unmodified and MWCNT modified) were less affected by aging and showed an insignificant change in tensile strength. The hybrid + MWCNT composites, showed an increase of approx. 7% in Young's modulus (1000 h) and 9% (500 h) and 17%, (1000 h) in flexural modulus when compared to the unexposed specimens. The MWCNTs had a positive effect on the mechanical properties of the glass + MWCNT aged samples.

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“… 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 Furthermore, the durability of the composites made from natural fiber and polymer matrix shows promising results under long‐term weathering conditions. 28 In this work, sisal and hemp fiber are used as reinforcing agents to develop recycled composites of PP‐made waste masks.…”

Section: Introductionmentioning

confidence: 99%

Polymer composites from natural fibers and recycled waste surgical masks during COVID‐19 pandemic

et al. 2022

Self Cite

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The crucial role of face masks is highlighted in our day‐to‐day life during the COVID‐19 pandemic. Polypropylene (PP)‐based disposable face masks are widely used to hold back viral transmission. The discarded masks can create a huge burden of contamination on the environment. The purpose of this work is to recycle and reuse discarded masks to reduce environmental pollution. A simple and innovative technique to recycle surgical masks into composites of higher mechanical strength and antimicrobial properties is explored to reuse in packaging materials and cutleries. The surgical masks composed of PP fibers are recycled to use as a matrix material to reinforce with sisal and hemp fibers. The hot compression molding technique is used to sandwich the PP masks with natural fibers. The tensile strength of the composites is remarkably increased by 197% and 305% for sisal fiber composites and hemp fiber composites, respectively. The tensile elongation also increased to 574% for sisal fiber composites. The resulting composites exhibit notable antimicrobial properties against Staphylococcus aureus , a pathogen responsible for common staphylococcal food poisoning. The composites are found to be suitable to use as food contact cutleries and packaging materials.

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Performance of Sisal/Hemp Bio-based Epoxy Composites Under Accelerated Weathering

Cited by 62 publications

References 52 publications

Hemp as a potential raw material toward a sustainable world: A review

Hemp as a potential raw material toward a sustainable world: A review

Effect of ultraviolet radiation and water spraying on the mechanical properties of multi‐walled carbon nanotubes reinforced natural fiber and hybrid composites

Polymer composites from natural fibers and recycled waste surgical masks during COVID‐19 pandemic

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