Paddy Straw-Based Circular Economy for Sustainable Waste Management

Thanuja, Kalyanasundaram Geetha; Marimuthu, S.; Desikan, Ramesh; Karthikeyan, Subburamu

doi:10.1007/978-981-16-4230-2_35

Cited by 1 publication

(2 citation statements)

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“…Very few works are reported on the utilization of wheat straw in polymer composites as compared to the use of other plant wastes. − From the work published on the mechanical and thermal behavior of cellulose nanofibers obtained from wheat straw by a chemical and mechanical route, it was observed that the tensile strength of the fibers is increased by 73% and degradation temperature by 38% . The change in mechanical properties upon varying the wheat straw fiber content and coupling agent concentration of the composites was studied by Pan et al, and it was observed that there was a linear increase in mechanical strength of the composites with wheat straw fiber content up to 40% and improved tensile strength of 34 MPa is achieved at 10 wt % of (MAPP) coupling agent concentration .…”

Section: Introductionmentioning

confidence: 99%

“…So, this way of integrating the concept of agro-waste WSP for the development of WPC will somewhat improve their recyclability and reusability and convert these composites into useful value-added products, which could lead to a reduction in waste landfilling, thereby reducing the impact on natural resources. Furthermore, this would close the door to discards, which would, in turn, ensure the continuous raw material inputs that would allow the conservation of the agro-resource value, thereby contributing to a circular agro-economy. , …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of Natural Straw-Derived Sustainable Polymer Composites for a Circular Agro-Economy

Patidar,

Thakur,

Chaturvedi

et al. 2024

ACS Sustainable Resour. Manage.

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In this study, attempts were made for the first time to explore the unexploited wheat straw particulates (WSP) as a reinforcement filler with concentrations up to 100% in a thermoplastic polypropylene (PP) matrix to produce a new type of wood plastic composites. The WSP-PP composites were developed by melt blending using the injection molding technique and were investigated for their mechanical, structural, and thermal properties. The present study showed low-density composites with densities varying from 0.84–1.04 gm/cc. Compared to virgin polypropylene, WSP-PP composites showed enhanced impact strength, improved flexural strength and moduli, and lower water absorption. With increasing WSP concentration, the mechanical strength increases, and at 20–30% filler concentration, the composite showed a maximum tensile strength of 27.21 ± 0.67 MPa and flexural strength of 44.48 ± 0.48 MPa. The maximum impact strength of WSP-PP composites (2.04 ± 0.11 kJ/m2) was recorded at 40% filler concentration along with lower water absorption (1.67%). The addition of WSP was found to decrease the thermal conductivity of the WSP-PP composites. The findings of this study confirmed the scope of wheat straw as a potential cellulosic reinforcing filler for manufacturing a new class of green composites of high-performance characteristics which could be explored and beneficial for electrical applications, civil infrastructure, automotive parts, etc. Further, the utilization of this inexpensive raw material for the development of composites leads to a reduction in the practice of open straw burning in fields, thereby causing a decrease in CGH emissions. Thus, the realization of this innovative work will contribute to achieving the United Nations’ sustainable development goals with a sustainable approach toward building a circular economy.

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