Sustainable recycling of paddy straw through development of short-fiber-reinforced composites: exploring gainful utilization of agricultural waste

Sharma, Shruti; Pappu, Asokan; Asolekar, Shyam R.

doi:10.1007/s10098-023-02607-y

Cited by 5 publications

(2 citation statements)

References 86 publications

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“…4 The optimal mechanical properties of injection molding composites are typically achieved with a plant fiber content of approximately 30%. 65,70,[77][78][79][80][81] Sharma et al 82 prepared paddy straw fiber-reinforced polypropylene (PP) composites and found that the optimal fiber loading reached 60%. High fiber content can bring better lightweight advantages and better environmental protection effects, which is the future development trend.…”

Section: Content Of Plant Fibersmentioning

confidence: 99%

Plant fiber‐reinforced composites based on injection molding process: Manufacturing, service life, and remanufacturing

Zhao,

Liu,

Zhao

et al. 2024

Polymer Composites

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Resource depletion and environmental degradation have become important issues affecting the human development process. Plant fiber‐reinforced composites (PFRCs) are characterized by high natural availability, good mechanical properties, low density, recyclability, and eco‐friendliness. Expanding human applications of plant fibers is an important measure to combat resource and environmental problems. The injection molding process has the characteristics of strong product size adaptability, high molding precision, and high production efficiency. It is suitable for large‐scale production in the industry and is one of the main molding methods of PFRCs. Currently, there are still challenges and opportunities for high‐performance manufacturing of PFRCs based on the injection molding process. This article reviews the complete process of manufacturing‐service life‐remanufacturing of PFRCs based on the injection molding process. Emphasis is placed on the pretreatment technology and selection strategy of multi‐phase blended raw materials, the molding process conditions, functional applications, and simulation analysis, the aging and degradation characteristics during service, and the remanufacturing characteristics of the composites. Finally, the future research focus is summarized and prospected. The research in this paper will help promote the continuous progress of key technologies in the production process of PFRCs and help the industry to truly realize high‐performance green manufacturing in the future.Highlights Plant fibers exhibit variability in morphology and properties. The link between the structure and performance of PFRCs is unclear. The degradability and durability of PFRCs are contradictory. The functionality and mechanical properties of PFRCs are contradictory. PFRCs have good characteristics for remanufacturing.

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Section: Content Of Plant Fibersmentioning

confidence: 99%

Plant fiber‐reinforced composites based on injection molding process: Manufacturing, service life, and remanufacturing

Zhao,

Liu,

Zhao

et al. 2024

Polymer Composites

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show abstract

“…The alkaline solution acted as a binder, alkali activator, and dispersant. Additionally, the alkaline pretreatment could remove the wax and other impurities on the fiber surface [25][26][27][28]. Alkalinized straw fiber was introduced as a modifying agent into a 3D-printed cement matrix composite material, and the fluidity, availability, and mechanical properties of the alkalized straw fiber composite material were improved compared with the natural-straw-fiber group [29].…”

Section: Introductionmentioning

confidence: 99%

Optimization Research of Sodium Hydroxide Pretreatment to Enhance the Thermal Properties of Straw–Mortar Composite Materials

Zhao,

Fu,

Feng

et al. 2024

Sustainability

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Although straw is being utilized as an additive in construction materials, the thermal properties of straw and building materials in combination are insufficient. The thermal properties of straw–mortar composite materials can be improved by the pretreatment of straw. The alkali treatment enhances the mechanical attachment between the fibers and the matrix material, assuring that the straw–mortar composite materials have solid thermal insulation characteristics. Pretreatment with sodium hydroxide was utilized in this work to enhance the thermal properties of straw–mortar composite materials. This study mainly investigated the thermal properties of straw–mortar composite material after sodium hydroxide pretreatment and its change rules under the condition of the freeze–thaw cycle. A three-factor, three-level Box–Behnken experimental design, with the straw content (%), pretreatment time (min), and reagent concentration (%) as process parameters, was used. The response variables were the thermal conductivity, thermal diffusivity, and thermal resistance. The findings revealed that all of the variables had a substantial impact on the replies. Optimization parameters of 17.95% for the straw content, 19.50 min for the pretreatment time, and 4.99% for the reagent concentration for the straw–mortar composite materials were achieved. A thermal conductivity of 0.211 W·(m·K)−1, a thermal diffusivity of 0.277 mm2·s−1, and a thermal resistance of 57.211 K·W−1 were the optimal thermal property indices. Furthermore, during the freeze–thaw cycle, the thermal conductivity coefficient and thermal diffusion coefficient of the combined pretreatment composite were 26% and 9% lower than the materials without the treatment. The thermal performance of the mortar composites prepared by alkali-treated straw was better than that prepared by untreated straw.

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Selection of sustainable construction material from recycled waste plastics by q-rung orthopair fuzzy SWARA-MABAC approach

Soni,

Chakraborty,

Das

et al. 2024

Chemosphere

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Sustainable recycling of paddy straw through development of short-fiber-reinforced composites: exploring gainful utilization of agricultural waste

Cited by 5 publications

References 86 publications

Plant fiber‐reinforced composites based on injection molding process: Manufacturing, service life, and remanufacturing

Plant fiber‐reinforced composites based on injection molding process: Manufacturing, service life, and remanufacturing

Optimization Research of Sodium Hydroxide Pretreatment to Enhance the Thermal Properties of Straw–Mortar Composite Materials

Selection of sustainable construction material from recycled waste plastics by q-rung orthopair fuzzy SWARA-MABAC approach

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