Effect of modified wheat straw fiber on properties of fiber cement-based composites at high temperatures

Jiang, Demin; Jiang, Di; Lv, Shuchen; Cui, Suping; Sun, Shiguo; Song, Xiaojie; He, Shanying; Zhang, Jingzong

doi:10.1016/j.jmrt.2021.07.105

Cited by 12 publications

(8 citation statements)

References 49 publications

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“…Biological enzyme technology and physical pre-treatment with steam by applying ultrasound or microwaves have also been investigated, enhancing the delignification efficiency important for bioenergy production [14,18]. Various methods, such as esterification, benzylation, acetylation, and organosolv or sol-gel coating techniques [19], have been used for the chemical modification of wheat straw involving chemical solutions, such as sodium hydroxide and sulphite, sulphuric acid, and hydrogen peroxide [20][21][22]. To increase the bonding strength between matrix and filler, the surface of the straw has been modified with various organic and non-organic materials.…”

Section: Introductionmentioning

confidence: 99%

Surface-Modified Wheat Straw for the Production of Cement-Free Geopolymer Composite: Effects of Wheat Variety and Pre-Treatment Method

Kalpokaitė-Dičkuvienė,

Pitak,

Sholokhova

et al. 2024

J. Compos. Sci.

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The development of new composite materials with specific properties and reduced environmental pollution can be achieved by the incorporation of agricultural residues, whose morphology is strongly affected by their variety and growing conditions. Herein, the functional properties of a cement-free geopolymer composite reinforced with straw from two wheat varieties (Ada and Malibu) were investigated through different straw pre-treatment methods and their surface modification with silane coupling agents. The characterization of the wheat surface and the geopolymer composites involved SEM-EDS, TGA, FTIR, and gas physisorption analysis methods supplemented with mechanical strength and moisture ingress measurements. Mild (23 °C) and severe (100 °C) physical pre-treatment methods with chemical soaking in 7.3 M isopropanol solution were applied on wheat straw. Tetraethoxysilane (TEOS) with octadecylamine was employed for chemical surface modification. The set of geopolymer compositions was prepared with untreated, pre-treated, and modified straws. The results revealed the hot pre-treatment method caused a higher degradation of siliceous layers of straw, especially in the Ada variety. The modification with TEOS resulted in irregular silane coating formation regardless of the wheat variety and pre-treatment method. Despite good interfacial bonding of the modified straw with the geopolymer matrix, the mechanical strength of the composites was reduced, although the resistance to water ingress slightly increased. Comparing both varieties, Ada wheat showed better performance than Malibu.

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Section: Introductionmentioning

confidence: 99%

Surface-Modified Wheat Straw for the Production of Cement-Free Geopolymer Composite: Effects of Wheat Variety and Pre-Treatment Method

Kalpokaitė-Dičkuvienė,

Pitak,

Sholokhova

et al. 2024

J. Compos. Sci.

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“…Composites prepared using wood fibers and plastic matrix are characterized by good performance [6][7][8] and have been widely applied in building materials, packaging, landscaping, and automobiles [9][10][11][12]. Thus, preparation of composites with good performances [13][14][15][16] by adding straw fibers into a thermoplastic polymer matrix might be a keyway of increasing crop straw utilization.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Extrusion Process for Preparing Rice Straw/LLDPE Composites

Xu¹,

Xie²,

Shan³

et al. 2023

Journal of Renewable Materials

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Straw utilization is a key issue related to agricultural production and air pollution control. In this study, a novel extrusion process was proposed to improve the physical and mechanical properties of the straw-reinforced linear low-density polyethylene (LLDPE) composite. Instead of crushing the straw and mixing it with plastic matrix, the new method mixes straw with plastic matrix in its original form. The intact long rice straws were parallelly spread on the LLDPE film and then rolled up together into a prefabricated roll. The rolls experienced three extrusion processes as follows: (1) twin-screw melting, cooling and crushing, single-screw extruding; (2) twin-screw melting and single-screw extruding; (3) directly single-screw extruding. The testing results showed that the straw/LLDPE composite (with a ratio of 6:4) prepared by Method (2) exhibited optimized properties. Characterization by scanning electron microscopy indicated that the damage to rice straw fibers was relatively minor, the orientation of long fibers was good, and the binding of fibers with the LLDPE matrix was excellent in this case. The results of dynamic mechanical testing (DMA), differential scanning calorimetry (DSC) and thermogravimetric (TG) analysis demonstrated that composites prepared by the new process exhibited significantly improved thermal stability and energy storage modulus, compared with those prepared by conventional processes (e.g., extruded straw particles/LLDPE composite). The new proposed method yielded significantly enhanced mechanical properties while reducing dust pollution.

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“…By 2050, worldwide grain output must rise by almost 50% to meet the rising demand, which will result in increased harvesting waste generation [1]. According to statistics, agricultural waste is generated annually in excess of 2.9 billion tons globally [2]. One of the most frequently produced crops in the world, wheat, is grown in 122 countries, and under a variety of environmental conditions (https:// world popul ation review.…”

Section: Introductionmentioning

confidence: 99%

“…com/ count ry-ranki ngs/ wheat-produ ction-by-count ry). For 2021/2022, the global wheat output reached 778.6 million tons, with the quantity of generated wheat residues (e.g., stubble, straw) predicted to be about one billion tons [2] (https:// www. stati sta.…”

Section: Introductionmentioning

confidence: 99%

“…The open-air combustion of straw waste can produce a substantial quantity of particulate matter, and toxic gases, such as nitrides, sulfur, methane, carbon dioxide, and carbon monoxide, resulting in severe air pollution [3][4][5]. The burning of straw waste in the field also endangers highway, railway, and aviation traffic safety and gravely harms human health and security [2]. Therefore, a novel strategy to transform WS into a useful end product is urgently required to lessen its detrimental effects on the environment.…”

Section: Introductionmentioning

confidence: 99%

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Selection of straw waste reinforced sustainable polymer composite using a multi-criteria decision-making approach

Singh

Fekete

Jakab

et al. 2023

Biomass Conv. Bioref.

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The valorization of straw waste as a sustainable and eco-friendly resource in polymer composites is critical for resource recycling and environmental preservation. Therefore, many research works are being carried out regarding the development of wheat straw-based polymer composites to identify the reinforcing potential of these sustainable resources. In this study, three different sizes of wheat straw fibers (60–120 mesh, 35–60 mesh, and 18–35 mesh) were used, and their different ratios (0, 2.5, 5, 10, and 20% by weight) were systematically investigated for the physical and mechanical properties of polypropylene-based sustainable composites. The results indicated that the evaluated composites’ properties are strongly dependent on the quantity and size of the utilized wheat straw. Therefore, a preference selection index was applied to rank the developed sustainable polymer composites to select the best composition. Various properties of the composite materials were considered as criteria for ranking the alternatives, namely tensile strength and modulus, flexural stress at conventional deflection and flexural modulus, impact strength, density, water absorption, material cost, and carbon footprint. The decision-making analysis suggests the alternative with wheat straw content of 20 wt.% (35–60 mesh size) dominating the performance by maximizing the beneficial criteria and minimizing the non-beneficial criteria, making it the most suitable alternative. This study will significantly help formulation designers to deal with the amount and size issues when developing polymeric composites.

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Effect of modified wheat straw fiber on properties of fiber cement-based composites at high temperatures

Cited by 12 publications

References 49 publications

Surface-Modified Wheat Straw for the Production of Cement-Free Geopolymer Composite: Effects of Wheat Variety and Pre-Treatment Method

Surface-Modified Wheat Straw for the Production of Cement-Free Geopolymer Composite: Effects of Wheat Variety and Pre-Treatment Method

Development of a Novel Extrusion Process for Preparing Rice Straw/LLDPE Composites

Selection of straw waste reinforced sustainable polymer composite using a multi-criteria decision-making approach

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