Effect of bamboo unit morphology on the preparation of bamboo fibers by steam explosion

Zhao, Wenjuan; Zhang, Jian; Zhang, Wenfu; Yuan, Shaofei; Chen, Hong; Wu, Anqi

doi:10.1016/j.indcrop.2023.117066

Cited by 14 publications

(7 citation statements)

References 36 publications

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“…However, it was possible to identify some reduced cavities and microfibrils of greater relief on the surface due to erosion generated by the action of water vapor. Chen et al, 2011 [59], and Zhao et al, 2023 [61], reported that surface erosion caused by steam explosion is related to the removal of some parenchyma cells adhered to the surface, hemicellulose, and lignin. Figure 3c,d shows two types of by-products from the core, starch, and native fibers, identifying their shapes, dimensions, and degree of purity at a qualitative level.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

“…On the other hand, Pereira-Marques et al, 2021[60], reported the reduction in the signal magnitude at 1740 cm −1 , associating it with a reduction in hemicellulose presence in sugarcane bagasse fibers when employing a temperature of 168 °C. Zhao et al, 2023[61], when processing bamboo fibers at 2 MPa for 4 min, did not evidence the formation of new functional groups, although a reduction in the intensity of the signals present was generated.…”

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confidence: 95%

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Potential of Plantain Pseudostems (Musa AAB Simmonds) for Developing Biobased Composite Materials

Castañeda-Niño,

Mina Hernandez,

Solanilla Duque

2024

Polymers

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A plantain pseudostem was harvested and processed on the same day. The process began with manually separating the sheaths (80.85%) and the core (19.14%). The sheaths were subjected to a mechanical shredding process using paddles, extracting 2.20% of lignocellulosic fibers and 2.12% of sap, compared to the fresh weight of the sheaths. The fibers were washed, dried, combed, and spun in their native state and subjected to a steam explosion treatment, while the sap was subjected to filtration and evaporation. In the case of the core, it was subjected to manual cutting, drying, grinding, and sieving to separate 12.81% of the starch and 6.39% of the short lignocellulosic fibers, compared to the fresh weight of the core. The surface modification method using steam explosion succeeded in removing a low proportion of hemicellulose and lignin in the fibers coming from the shims, according to what was shown by Fourier Transform Infrared Spectroscopy (FT-IR), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC), achieving increased σmax and ε from the tensile test and greater thermal stability compared to its native state. The sap presented hygroscopic behavior by FT-IR and the highest thermal stability from TGA, while the starch from the core presented the lowest hygroscopic character and thermal stability. Although the pseudostem supplied two types of fibers, lower lignin content was identified in those from the core. Finally, the yarns were elaborated by using the fibers of the sheaths in their native and steam-exploded states, identifying differences in the processing and their respective physical and mechanical properties.

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Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

mentioning

confidence: 95%

Potential of Plantain Pseudostems (Musa AAB Simmonds) for Developing Biobased Composite Materials

Castañeda-Niño,

Mina Hernandez,

Solanilla Duque

2024

Polymers

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“…With the extension of time, the water absorption of the four kinds of composite materials increased rapidly at first and then slowly, and the increase in the water absorption slowed down after 72 h. The water absorption of the BF/PLA composite was higher than that of the other three forms, reaching 3.5% at 24 h and 10.83% at 288 h, which was 83.2% and 45.8% higher than that of the BM/PLA composite with the lowest water absorption, respectively. The high water absorption of the BF/PLA composite may be due to its small BF monomer and larger specific surface area (Zhao et al 2023), which exposes more hydroxyl groups on the composite surface, which easily combine with hydroxyl groups in water to undergo wet expansion (Xu et al 2021), resulting in greater water absorption. The water absorption of the BS/PLA composite was slightly higher than that of the BP/PLA composite, and its water absorption at 24 h and 288 h was 29% and 12.5% higher, respectively.…”

Section: Water Absorption Analysismentioning

confidence: 99%

Chip morphology’s effect on properties of PLA-based bamboo–plastic composites produced using hot-pressing

Qiu,

Yang,

Zhang

et al. 2024

BioRes

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This study explored the effect of raw material morphology on the properties of bamboo–plastic composites produced using hot-pressing. To provide a reference for reducing the production cost and improve the product properties of the composites, polylactic acid (PLA)-based bamboo–plastic composites were prepared using bamboo chips with a shaved morphology (BS) and fiber morphology (BF) and PLA as the matrix material, via hot-pressing. The properties of the bamboo–plastic composites formed with BS and BF chips were studied and compared with those of composites with conventional granular morphology (BM) and powder morphology (BP). The results showed that when the content of the bamboo chips was at 50% (the same below), the mechanical properties of the BF/PLA composites were remarkably better than those of the other PLA-based composites. However, the BF/PLA composites showed a high degree of hydrophilicity, with a water contact angle of 70.0° and a water absorption of 10.8% at 288 h. More holes could be seen in the BF/PLA composites using a scanning electron microscope. Among the four types of PLA-based composites, better melt fluidity was found only in the BF/PLA composites, and the melting index was 65.3 g/min.

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“…This phenomenon was mainly related to the effect of bamboo rolling. During the pre-treatment process of bamboo, rolling was carried out to increase the specific surface area and enhance the explosion effect (Zhao et al 2023). Bamboo with higher stiffness is more easily rolled open, resulting in more cracks and increasing the pathway for steam penetration, thereby achieving a more uniform separation.…”

Section: The Separation Mechanismmentioning

confidence: 99%

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

Zou,

Zhao,

Zhang

et al. 2024

BioRes

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Bamboo fibers (BFs) at different ages (1, 3, and 5 years old) were prepared by pretreatment and steam explosion. The results demonstrated that the separation degrees of BFs increased with the age of the bamboo. The combined effects of pretreatment and steam explosion partially removed the hemicellulose and lignin from BFs, while the crystalline structure of cellulose remained unaltered. The water vapor adsorption isotherms of BFs at different ages all showed a typical S-shape and could be classified as type II, and the hysteresis of BFs increased with the age of the bamboo. After pretreatment and steam explosion, the tissues in the vascular bundle were effectively crushed, and the parenchyma tissues were dislodged and separated from the fiber sheath. During the steam explosion process, hot steam penetrated the bamboo’s pores, including the pores induced by pretreatment. This caused fractures and delamination in the interface between the vascular bundle and the parenchyma tissues. These cracks progressed layer by layer along the vascular bundle interface, leading to the fracture of the bamboo.

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Effect of bamboo unit morphology on the preparation of bamboo fibers by steam explosion

Cited by 14 publications

References 36 publications

Potential of Plantain Pseudostems (Musa AAB Simmonds) for Developing Biobased Composite Materials

Potential of Plantain Pseudostems (Musa AAB Simmonds) for Developing Biobased Composite Materials

Chip morphology’s effect on properties of PLA-based bamboo–plastic composites produced using hot-pressing

Dimensions, microstructure, chemical, and hygroscopic analysis of steam-exploded bamboo fibers at different ages

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