Thermal decomposition behavior of thin Makino bamboo (Phyllostachys makinoi) slivers under nitrogen atmosphere

Yang, Tiankui; Yang, Yun-Liang; Yeh, Chin-Hao

doi:10.1016/j.mtcomm.2021.102054

Cited by 12 publications

(8 citation statements)

References 53 publications

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“…Additionally, a slight increase in the intensity of the carbonyl band was observed when the temperature reached 200 • C, which may be caused by the formation of new carbonyl groups by esterification reactions. These results were consistent with the previous reported findings by Gao et al [33] and Yang et al [34]. Furthermore, the bands at 1 632 cm −1 and 1514 cm −1 are the stretching vibration of the conjugated carbonyl group (C=O) and the vibration peak of aromatic ring skeleton of lignin, respectively [35].…”

Section: Effect Of Vacuum Heat Treatment On Surface Color Of Bamboo F...supporting

confidence: 93%

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Surface Characteristics of Thermally Modified Bamboo Fibers and Its Utilization Potential for Bamboo Plastic Composites

et al. 2022

Materials

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Bamboo fibers are considered as a more attractive option for the reinforcement of wood plastic composites as compared to wood fiber due to its fast growth rate and good toughness. Heat treatment is an environment-friendly method of improving the integrated performance of bamboo materials. This paper highlights the heat treatment of bamboo fiber for suitable properties as reinforcements in bamboo plastic composites. The effects of vacuum heat treatment on the surface characteristics of bamboo fibers and the properties of bamboo plastic composites were analyzed by studying the chemical composition, surface elements and polarity of bamboo fiber before and after treatment, and the physical and mechanical properties of bamboo plastic composite. The results showed that after vacuum heat treatment, the bamboo fibers became darker and experienced a transition from green to red. Moreover, FTIR, XPS and contact angle analysis indicated that the hemicellulose content, the oxygen/carbon ratio and the polar component of the bamboo fiber had a decreasing trend as the treatment temperature increased. In addition, the 24 h water absorption and the 24 h thickness expansion rate of the water absorption showed a trend of first decreasing and then increasing as the treatment temperature increased, while the bending performance of bamboo plastic composite showed a trend of increasing first and then decreasing as a result of increased treatment temperature. Therefore, a combined process of vacuum heat treatment and the addition of MAPE could improve the physical and mechanical properties of bamboo plastic composites to a certain extent.

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Section: Effect Of Vacuum Heat Treatment On Surface Color Of Bamboo F...supporting

confidence: 93%

“…with the previous reported findings by Gao et al [33] and Yang et al [34]. Furthermore, the bands at 1 632 cm −1 and 1514 cm −1 are the stretching vibration of the conjugated carbonyl group (C=O) and the vibration peak of aromatic ring skeleton of lignin, respectively [35].…”

Section: Effect Of Vacuum Heat Treatment On Surface Color Of Bamboo F...supporting

confidence: 89%

Surface Characteristics of Thermally Modified Bamboo Fibers and Its Utilization Potential for Bamboo Plastic Composites

et al. 2022

Materials

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“…The initial mass loss at 30-100 ºC may be attributed to water removal of the plastinated and non-plastinated bamboo samples. The second mass loss at 200-300 ºC mainly resulted from the decomposition of hemicellulose, and the third mass loss around 325 ºC may be attributed to cellulose and lignin decomposition, from both bamboo samples 15,16,22 . The fourth mass loss at 350-550 ºC was indicative of the presence of SS-151 in the plastinated sample, which was completed degraded at 600 ºC as shown by the DTG curve of cured SS-151.…”

Section: Resultsmentioning

confidence: 98%

“…Since bamboo is stable at temperatures less than 200 °C 15,16 , unlike human remains, a quick, heat-curing cycle like that required for the SS-151 was deemed more reasonable. Using SS-151 instead of NCS10, NCS6, and NCS3 was also simpler because it did not require a by-volume mixture or multiple, long spray-on curing cycles.…”

Section: Resultsmentioning

confidence: 99%

An improved plastination method for strengthening bamboo culms, without compromising biodegradability

Osmond

Margoto

Başar

et al. 2023

Sci Rep

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Biomaterials are increasingly being designed and adapted to a wide range of structural applications, owing to their superior mechanical property-to-weight ratios, low cost, biodegradability, and CO2 capture. Bamboo, specifically, has an interesting anatomy with long tube-like vessels present in its microstructure, which can be exploited to improve its mechanical properties for structural applications. By filling these vessels with a resin, e.g. an applied external loading would be better distributed in the structure. One recent method of impregnating the bamboo is plastination, which was originally developed for preserving human remains. However, the original plastination process was found to be slow for bamboo impregnation application, while being also rather complicated/methodical for industrial adaptation. Accordingly, in this study, an improved plastination method was developed that is 40% faster and simpler than the original method. It also resulted in a 400% increase in open-vessel impregnation, as revealed by Micro-X-ray Computed Tomography imaging. The improved method involves three steps: acetone dehydration at room temperature, forced polymer impregnation with a single pressure drop to − 23 inHg, and polymer curing at 130 °C for 20 min. Bamboo plastinated using the new method was 60% stronger flexurally, while maintaining the same modulus of elasticity, as compared to the virgin bamboo. Most critically, it also maintained its biodegradability from cellulolytic enzymes after plastination, as measured by a respirometric technique. Fourier transform infrared-attenuated total reflection, and thermogravimetric analyses were conducted and showed that the plastinated bamboo’s functional groups were not altered significantly during the process, possibly explaining the biodegradability. Finally, using cone calorimetry, plastinated bamboo showed a faster ignition time, due to the addition of silicone, but a lower carbon monoxide yield. These results are deemed as a promising step forward for further improvement and application of this highly abundant natural fiber in engineering structures.

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“…The alkali pretreatment was relatively effective for the removal of lignin and hemicellulose, and the best removal was achieved at 2 MPa and 6 min. 110), ( 200) and ( 040) lattice planes, respectively (Yang et al 2021), which is a characteristic for the typical cellulose Ⅰ (French 2014). It is obvious that the crystal form of BFs cellulose prepared after different pretreatments had not changed, and it was still typical cellulose Ⅰ.…”

Section: Chemical Compositionsmentioning

confidence: 92%

Effects of different pretreatments combined with steam explosion on the properties of bamboo fibers

Zou

Zhang

Yuan

et al. 2022

BioRes

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Bamboo pretreatment is a key technology for the preparation of bamboo fibers (BFs) for composites. This study examined the properties of BFs prepared by steam explosion (SE) BFs following pretreatment by enzyme, alkali, and salt. The microstructure, functional groups, crystallinity, and surface chemical elements of BFs were characterized by environmental scanning electron microscope (ESEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that bamboo could be separated into fiber bundles through SE after pretreatment. The separation of BFs pretreated by enzyme and alkali were better, but colloid remained and was able to stick the fibers together. Through performing different pretreatments before SE, the lignin and hemicellulose of BFs were partially removed, and alkali pretreatment had the best effect on lignin removal. The crystal structure of the BFs did not change significantly, and the crystallinity of BFs was highest at 2 MPa and 6 min when pretreated by alkali. The XPS results showed that the effect of alkali pretreatment at 2 MPa for 6 min was the best.

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Thermal decomposition behavior of thin Makino bamboo (Phyllostachys makinoi) slivers under nitrogen atmosphere

Cited by 12 publications

References 53 publications

Surface Characteristics of Thermally Modified Bamboo Fibers and Its Utilization Potential for Bamboo Plastic Composites

Surface Characteristics of Thermally Modified Bamboo Fibers and Its Utilization Potential for Bamboo Plastic Composites

An improved plastination method for strengthening bamboo culms, without compromising biodegradability

Effects of different pretreatments combined with steam explosion on the properties of bamboo fibers

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