Bamboo heat treatments and their effects on bamboo properties

Li, Zhao-Zhao; Luan, Yu; Hu, Jinbo; Fang, Carol; Liu, Li-Tong; Ma, Yifan; Liu, Yuan; Fei, Benhua

doi:10.1016/j.conbuildmat.2022.127320

Cited by 89 publications

(25 citation statements)

References 59 publications

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“…However, the major challenges for structural bamboos as potential radiation cooling building materials are to reduce their flammability and enhance the durability. 11,12 The biomass resources of bamboo are one of the most popular, cheap, and renewable energy sources because they are abundant in sources. 13,14 However, natural bamboos have relatively poor fire resistance, thermal insulation, and mechanical strength, 15 and they should be compounded or combined with other materials to prepare an ideal energysaving materials, and the cellulose in bamboo does not absorb in the visible light range due to its multiscale internal structure and molecular vibration and emits intense light under infrared light.…”

Section: ■ Introductionmentioning

confidence: 99%

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Multifunctional Bamboo Fiber Hybrid Structural Materials for Daytime Radiation Cooling

Piao

Cao

Guo

et al. 2022

ACS Sustainable Chem. Eng.

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Through the complete delignification and densification process of bamboo, a 3D network bulk was assembled to process a high-performance and inexpensive cooling structural material. We constructed a cooling bamboo with a mechanical strength of 270.1 MPa as a structural material with more than 9.5 times the volume of pure bamboo fiber, and it has higher specific strength than most structural materials. Cellulose acts as a photonic solar reflector and thermal emitter, enabling the material to achieve 24 h continuous cooling with an average daytime and nighttime cooling of 3 and 2 °C, respectively. At the same time, it also has excellent flame-retardant and antifungal functions, and undoubtedly, it is a potential building structure material in the future.

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Section: ■ Introductionmentioning

confidence: 99%

“…Using bamboos as modern radiation cooling materials is in line with contemporary sustainable development requirements. However, the major challenges for structural bamboos as potential radiation cooling building materials are to reduce their flammability and enhance the durability. , …”

Section: Introductionmentioning

confidence: 99%

Multifunctional Bamboo Fiber Hybrid Structural Materials for Daytime Radiation Cooling

Piao

Cao

Guo

et al. 2022

ACS Sustainable Chem. Eng.

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“…As one of the fastest growing plants in the world, bamboo has the advantages of being biodegradable, renewable, having a high tensile strength, good toughness, and low cost [ 1 , 2 , 3 , 4 ]. As a result, bamboo and its products are used extensively in the fields of building, furniture, and gardening [ 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Process and Anti-Mildew Properties of Tea Polyphenol-Modified Citral-Treated Bamboo

Chen

et al. 2022

Molecules

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In order to reduce the oxidative degradation of citral, our research group modified citral with the natural antioxidant from tea polyphenols and applied it to bamboo processing to enhance the anti-mold effect of bamboo, but its application to the bamboo treatment process and the anti-mold effect is still not clear. For this reason, in this paper, the tea polyphenol-modified citral anti-mildew treatment of bamboo as well as the anti-mildew properties of bamboo were explored using the orthogonal testing method and a UV-vis spectrophotometer. The results showed that when the concentration of tea polyphenol-modified citral reached 175 mg mL−1 and above, the efficacy of the anti-mildew treated bamboo against common molds reached 100%; the improved anti-mildew treatment process parameters for bamboo were as follows: impregnation pressure 0.6 MPa, impregnation time 150 min, and tea polyphenol-modified citral concentration 200 mg mL−1. Following the tea polyphenol-modified citral anti-mildew treatment of bamboo, not only did it improve the anti-mildew properties of the bamboo materials, but it also added a fresh lemon fragrance without altering the original colour, microstructure, and chemical properties of the bamboo materials.

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“…An effective way to improve durability is to modify bamboo using thermal treatment. Heat treatment is a commercially viable technology, which changes the physical structure and/or chemical compositions of bamboo at elevated temperatures to achieve designed changes [ 13 ]. Heat treatments of bamboo using stream, air or inert gas, oil, and water have been reported [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Durability Evaluation of Outdoor Scrimbers Fabricated from Superheated Steam-Treated Bamboo Fibrous Mats

et al. 2022

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With natural texture and high performance, bamboo scrimber is one of the artificial lignocellulosic composites widely used in construction, furniture and other structural applications. However, it is vulnerable to the actions of water, ultraviolet radiation and fungus, which affect its durability, especially in the open. Here, bamboo was treated with superheated steam in an attempt to improve the durability of bamboo scrimbers. The chemical composition, mechanical properties, dimensional stability, aging resistance, decay resistance and anti-mildew properties were investigated at different temperatures (160~200 °C). After superheated steam treatment, the relative contents of holocellulose and α-cellulose in bamboo decreased. The bending strength and short-beam shearing strength slightly decreased as the temperature was raised while the modulus was essentially retained. The aging resistance in terms of thickness swelling rate (≤9.38%) was substantially improved. The decay resistance reached to the level of Grade I and can be dramatically enhanced by elevating temperature. The anti-mildew properties were also improved. To take together, superheated steam treatment remarkably improves the resistance of bamboo scrimbers to water, ultraviolet radiation, rot fungi and mildew with some concomitant reduction in mechanical properties. The results will permit outdoor construction using bamboo scrimbers more resistant to environmental damage.

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Bamboo heat treatments and their effects on bamboo properties

Cited by 89 publications

References 59 publications

Multifunctional Bamboo Fiber Hybrid Structural Materials for Daytime Radiation Cooling

Multifunctional Bamboo Fiber Hybrid Structural Materials for Daytime Radiation Cooling

Process and Anti-Mildew Properties of Tea Polyphenol-Modified Citral-Treated Bamboo

Durability Evaluation of Outdoor Scrimbers Fabricated from Superheated Steam-Treated Bamboo Fibrous Mats

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