Alkali Treatment Influence on Characterization of Setaria Italic (Foxtail Millet) Fiber Reinforced Polymer Composites Using Vacuum Bagging

Reddy, R. V. Saikumar; Krishnudu, D. Mohana; Prasad, P. Rajendra; Reddy, P. Venkateshwar

doi:10.1080/15440478.2020.1788494

Cited by 22 publications

(9 citation statements)

References 45 publications

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“…[23] For instance, treatment of natural fiber with 3-5 wt% of NaOH gives enough roughness by forming alkoxides on the surface of the fiber to be mechanically interlocked with the hydrophobic polymer matrix. [23,24] In this regard, Narayan et al [25] reviewed alkali treated natural fiber reinforced polymeric composites and reported that the use of 5-8 wt % of alkali treatment of the natural fibers decreases the moisture absorption and increases the interfacial interactions with the base matrix. On contrary, treatment of the natural fibers with the higher concentration of the NaOH reduces the tensile and flexural properties of the composites compared to untreated one.…”

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confidence: 99%

Study of mechanical and thermal behavior of alkali modified groundnut shell powder reinforced ABS composites

Kumar

Singh

Kumari³

et al. 2022

Polymer Composites

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Current study employs reinforcement of untreated (GSP) and alkali treated groundnut shell powder (T-GSP) to the thermoplastic acrylonitrile-butadienestyrene (ABS) matrix for the fabrication of composites. Interactions of alkali to the cellulose, hemicellulose, and lignin of T-GSP was confirmed from the ATR-IR analysis. The most significant tensile strength (54.78 MPa) and modulus (2.78 GPa) was reported for 20 wt% T-GSP reinforced ABS composite. Additionally, greatest flexural strength and modulus of 88.30 MPa and 7.80 GPa was recorded for the composite constitutes 20 wt% T-GSP and 80 wt% ABS.The highest and lowest notched impact strength of 15.85 kJ/m 2 and 13.52 kJ/ m 2 were reported for the composites consist of 10 and 20 wt% of T-GSP. Composite 20/80 T-GSP/ABS exhibited highest shore D hardness value of 90. Morphology was studied using FE-SEM characterization and reports excellent wetting of T-GSP particles from ABS. Composites reinforced with 10 wt% of T-GSP exhibited highest (~269 C) while one reinforced with 20 wt% of the T-GSP showed lowest thermal degradation point (~259 C) throughout the temperature range. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) analysis shows an increment (1-6 C) in the glass transition temperature of all the composites compared to pristine ABS irrespective of treatment.alkali-treatment, acrylonitrile-butadiene-styrene, groundnut shell powder, notched impact strength, thermoplastic composites | INTRODUCTIONComposites materials are essential in many forms for the survival of human life, and they may be structural, [1][2][3][4] functional, [5,6] or biomaterial. [7] However, the fabrication of synthetic fibers for polymer composite manufacturing leads to the generation of immense waste and energy consumption. Natural and sustainable reinforcement with high-mechanical strength could be the perfect and technoeconomic answer to these synthetic counterparts. Due to their environment-friendly and moderately good mechanical properties, they create a huge opportunity to implement them in different engineering and commercial applications. [8,9] For instance, industrial fibers like flax, Piyush Kumar is the first author.

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confidence: 99%

Study of mechanical and thermal behavior of alkali modified groundnut shell powder reinforced ABS composites

Kumar

Singh

Kumari³

et al. 2022

Polymer Composites

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“…The concentration of alkali content in the range (0-5%) has a significant effect (p<0.05) on the three types of fibers with an increase in tensile strength of more than 50% and even hemp fiber increases by about 81%. This significant increase indicates that the alkaline treatment (NaOH) on hemp, palm fiber and coconut husk is very effective in improving mechanical properties [15,17,19,20]. Coir Figure 4 presents the tensile strength test results and shows that the alkali (NaOH) treatment significantly changes the tensile strength of ramie, sugar palm and coir fibers.…”

Section: Resultsmentioning

confidence: 97%

“…In Figure 6(B) and Figure 6(C), the highest wavenumber spectrum at 1383 cm -1 indicates the high lignin element in sugar palm and coir fibers. For the three fibers treated with alkali, the FTIR curve clearly shows an increase in cellulose content compared to untreated fibers [15,11,27]. Figure 7 shows the morphology of untreated fibers in Figure 7(A-C), whereas Figure 7(D-F) shows the morphology of fibers after 3% NaOH alkaline treatment.…”

Section: Resultsmentioning

confidence: 98%

“…The natural fibers still need to be improved in terms of their mechanical properties, water resistance, and production process [13,14]. Various methods have been used in producing natural fibers for industrial purposes including alkaline processes [15,16,17,18]. These alkali processes have been used for a variety of fibers such as hemp, jute, coir, and ramie but still involve heat treatment and excessive use of many chemicals [14,19].…”

Section: Introductionmentioning

confidence: 99%

“…The reason investors use natural fibers in this industry is due to its low price and shorter processing stages. In addition, natural fibers provide a healthier environmental impact because greenhouse pollution can be reduced [14,15]. Another reason is that natural fibers have good mechanical properties, abundant supply, heat resistant, resistant to insects, has good water absorption, abrasion resistance and easy to modify their chemical structure [17,18].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Alkali Treatment on Improving the Mechanical Properties of Ramie (Boehmeria Nivea), Sugar Palm (Arenga Pinnata), and Coir (Cocos Nucifera) Fibers

Suriaman

Hendrarsakti

Mardiyati

et al. 2021

AEJ

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In line with economic growth, material requirements in the industrial sector will increase. Industries are required to use materials that are safe for human health, environmentally friendly and utilize local raw materials. Currently, industries in general still use synthetic materials based on petroleum residues that contain many hazardous chemicals. Therefore, natural fiber has the potential to be used as a substitute for synthetic materials, especially in Indonesia which is rich in natural fibers resources. This will have an impact on the socio-economy of the local community so that it can grow the rural economic sector. Natural fibers have high economic value that can be used for various raw material needs for strategic industries. A good natural fiber processing mechanism will produce products that can be marketed globally with guaranteed product quality. This research analyzes the effect of alkali treatment of ramie, sugar palm and coir fiber on the increase in mechanical properties of the fiber. The mechanical properties were analyzed through tensile strength testing of single fiber according to ASTM D3822 standard using a textechno favigraph machine. In addition, this research is supported by data from thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The results showed that the fibers that had been given an alkali treatment had better mechanical properties compared to untreated fibers. Increased tensile strength of fibers was observec after being treated with alkali for ramie 81%, sugar palm 52% and coir 56%. The advantage of this alkaline treatment method is that no heating is involved and the treatment procedures are more practical compared to other methods.

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A comprehensive review on plant‐based natural fiber reinforced polymer composites: Fabrication, properties, and applications

et al. 2023

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Natural fiber‐reinforced polymer composites (NFPCs) have gained limelight in many applications during the recent years, owing to their availability, as well as superior mechanical characteristics, cost‐effectiveness, biodegradability, and lightweight. A comprehensive understanding of the manufacturing methods, proeprties and characteristics of natural fibers pave way for begetting a wide spectrum of applications for the NFPCs in automobile, aerospace, electronics, and other engineering fields. The current review article is about natural fiber‐reinforced composites, the commonly used fabrication methods, including fiber pre‐treatments, and numerous intermediate steps added to achieve improved bonding, processability of these composites, their properties and application prospects. Various state‐of‐the‐art methods like additive manufacturing, vaccum bag molding, and autoclave has also been discussed. The mechanical properties obtained through various fiber reinforcements in accordance with process parameters has a substantial impact in the industrial applications of NFPCs. The tribological applications of NFPCs are becoming increasingly important in order to deal with the mechanical and chemical wear and tear during their service life in contact applications. Flammability behavior and biodegradability assessment of NFPCs are important for high‐temperature and outdoor environmental applications of these materials. The review also includes a comprehensive discussion about the trending applications and future prospects for NFPCs.

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Alkali Treatment Influence on Characterization of Setaria Italic (Foxtail Millet) Fiber Reinforced Polymer Composites Using Vacuum Bagging

Cited by 22 publications

References 45 publications

Study of mechanical and thermal behavior of alkali modified groundnut shell powder reinforced ABS composites

Study of mechanical and thermal behavior of alkali modified groundnut shell powder reinforced ABS composites

The Effect of Alkali Treatment on Improving the Mechanical Properties of Ramie (Boehmeria Nivea), Sugar Palm (Arenga Pinnata), and Coir (Cocos Nucifera) Fibers

A comprehensive review on plant‐based natural fiber reinforced polymer composites: Fabrication, properties, and applications

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