Studies on morphological, physico-chemical and mechanical properties of wheat straw reinforced polyester resin composite

Haque, Md. Eyazul; Khan, Wahab; Rani, M. Indira

doi:10.1007/s00289-021-03630-z

Cited by 14 publications

(7 citation statements)

References 42 publications

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“…This leads to the expectation of a strong fiber-matrix interface, which would indicate that the observed differences in tensile strength are due to the intrinsic strength of the fibers [33]. If the values obtained are compared with published results for similar fibers such as wheat straw, rice straw, and other agricultural residues without coupling agents, it can be observed that superior results have been obtained in terms of increases in tensile strength, which confirms the strong interface obtained [34][35][36]. In this sense, if the results obtained are compared with those presented for sugarcane bagasse fibers with a coupling agent, it can be observed that the maximum increase obtained is 61.78%, lower than that of rapeseed fibers [37].…”

Section: Composite Macromechanical Analysissupporting

confidence: 60%

Approaching a Zero-Waste Strategy in Rapeseed (Brassica napus) Exploitation: Sustainably Approaching Bio-Based Polyethylene Composites

et al. 2022

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The current need to develop more sustainable processes and products requires the study of new materials. In the field of plastic materials, the need to develop 100% bio-based materials that meet market requirements is evident. In this sense, the present work aims to explore the potential of rapeseed waste as a reinforcement of a bio-based plastic matrix that does not generate new sub-waste. For this purpose, three types of processing of rapeseed residues have been studied: (i) milling; (ii) mechanical process; (iii) thermomechanical process. In addition, the reinforcing capacity of these materials, together with the need for an optimized coupling agent at 6 wt.%, has been verified. The micromechanics of the materials have been evaluated to determine the development of these fibers in the composite material. The results obtained show remarkable increases in mechanical properties, reaching more than 141% in tensile strength and 128% in flexural strength. There is a remarkable difference in the impact behavior between the materials with milled rapeseed and the fibers obtained by mechanical or thermomechanical processes. It was found that by sustainable design it is possible to achieve a 76.2% reduction in the amount of plastic used to manufacture material with the same mechanical properties.

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Section: Composite Macromechanical Analysissupporting

confidence: 60%

Approaching a Zero-Waste Strategy in Rapeseed (Brassica napus) Exploitation: Sustainably Approaching Bio-Based Polyethylene Composites

et al. 2022

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“…The standard composite made with unsaturated polyester resin i.e., WH + P and SB + P showed several different peaks compared to epoxy composites. The main peaks that are responsible for the functional group of polyester resin appeared at 1725, 1449, 1274, 1123, 1070 and 744 cm −1 , corresponding to the carbonyl stretching C=O from the ester linkage, aromatic ring of phenyl group, twisting vibration of -CH2 group, aliphatic ether/ester -COO-, unsaturated in-plane deformation and unsaturated aromatic out-of-plane deformation, respectively [ 41 , 42 , 43 ]. The disappearance of the peak at 3335 cm −1 reveals the cross-linking between the -OH group of cellulose and the polyester resin.…”

Section: Resultsmentioning

confidence: 99%

Development and Characterization of Bio-Composites from the Plant Wastes of Water Hyacinth and Sugarcane Bagasse: Effect of Water Repellent and Gamma Radiation

2023

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Plant waste is a huge source of natural fibers and has great potential in the field of reinforced polymer composites to replace the environmentally harmful synthetic composites. In this study, fibers were extracted from water hyacinth (WH) petiole and sugarcane bagasse (SB) to make nonwovens by wet-laid web formation, and reinforced on the polyester (P) and epoxy (E) resins to make four types of composites namely, water hyacinth nonwoven reinforced epoxy (WH + E), water hyacinth nonwoven reinforced polyester (WH + P), sugarcane bagasse nonwoven reinforced epoxy (SB + E) and sugarcane bagasse nonwoven reinforced polyester (SB + P) composites. Water repellent (WR) on the nonwovens and gamma radiation (GR) on the composites were applied to improve the hydrophobicity and mechanical properties, such as tensile strength (TS), elongation at break and tensile modulus (TM) of the composites. The morphological structure of the fiber surfaces and tensile fractures were analyzed by SEM. FTIR spectra showed changes in functional groups before and after treatment. XRD analysis exhibited an increase in crystallinity for gamma-irradiated composites and a decrease in crystallinity for WR-treated composites compared to untreated composites. The SB composites (SB + E, SB + P) and polyester composites (WH + P, SB + P) showed higher water absorbency and lower mechanical properties than the WH composites (WH + E, WH + P) and epoxy composites (WH + E, SB + E), respectively. Hydrophobicity improved significantly by approximately 57% (average) at a concentration of 10% WR. However, TS and TM were reduced by approximately 24% at the same concentration. Thus, 5% WR is considered an optimum concentration due to the very low deterioration of TS and TM (<10%) but significant improvement in hydrophobicity (~39%) at this dose. On the other hand, GR treatment significantly improved TS, TM and hydrophobicity by 41, 32 and 25%, respectively, and decreased Eb% by 11% at a dose of 200 krd. However, mechanical properties and hydrophobicity deteriorated with further increase in dose at 300 krd. Thus, 200 krd is considered the optimum dose of GR.

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“…The morphological properties of straw also play an important role. For example, untreated straw compared to treated straw has a non-uniform loose rough surface, which allows reagents to penetrate more quickly into the internal structures of the straw (Haque et al, 2022).…”

Section: Physical-chemical Characteristics Of Strawmentioning

confidence: 99%

Biotechnological methods in pulp and paper production from an alternative source of raw materials - the savior of the ecosystem

Saparbekova,

Altekey,

Seitmagzimova

et al. 2023

Appl Env Biotechnol

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The pulp and paper industry is at its peak due to the annual growth in demand for paper products which includes packaging board, hygienic paper products, printing papers and the list is endless. To date, the main source of raw materials for pulp and paper production is wood. However, its use and the use of standard flow charts in pulp and paper production creates environmental problems. For example, deforestation to obtain raw materials leads to a disruption of biogeocenoses, and technology using alkalis and acids are sources of toxic wastewater that pollute the hydrosphere and lithosphere. In order to avoid the above environmental problems, other options for sustainable sources of raw materials can be considered, such as agricultural waste - straw. By its natural origin, straw is a non-woody plant, which will significantly simplify the flow chart of pulp and paper production, on the one hand, and on the other hand, the use of straw in production will help to reduce the risks of early global warming, since most of the straw is burned in the fields. As far as toxic wastewater emissions are concerned, they can be drastically reduced through the biological degradation of straw lignin to produce pure pulp. Biodegradation of lignin can be produced by widespread wood-destroying fungi due to their ability to synthesize lignin-degrading enzymes. Thus, the use of biological agents in pulp and paper production will make it possible to eliminate the use of caustic acids and alkalis.

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Studies on morphological, physico-chemical and mechanical properties of wheat straw reinforced polyester resin composite

Cited by 14 publications

References 42 publications

Approaching a Zero-Waste Strategy in Rapeseed (Brassica napus) Exploitation: Sustainably Approaching Bio-Based Polyethylene Composites

Approaching a Zero-Waste Strategy in Rapeseed (Brassica napus) Exploitation: Sustainably Approaching Bio-Based Polyethylene Composites

Development and Characterization of Bio-Composites from the Plant Wastes of Water Hyacinth and Sugarcane Bagasse: Effect of Water Repellent and Gamma Radiation

Biotechnological methods in pulp and paper production from an alternative source of raw materials - the savior of the ecosystem

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