Fully Biobased Lignin-Bonded Bamboo Composites with Mold Resistance Based on Lignin Recycle Strategy

Superheated steam treatment: An eco-friendly approach for enhancing dimensional stability and mold resistance of bamboo via cellular structures regulation and hemicelluloses degradation.

With the scarcity of wood resources and calls for “substituting bamboo for wood” and “substituting bamboo for plastic”, bamboo has gained greater popularity for its abundant reserves and outstanding mechanical properties. However, Mildew is a common problem for bamboo, which can significantly reduce the quality and service lives of bamboo products. In this work, a safe, eco-friendly, controllable and efficient method of gamma-ray irradiation was used to modify bamboo. The irradiation dose, moisture content (MC), and irradiation dose rate were adopted as factors of an orthogonal experiment. The results showed that the bamboo strips reached their best mechanical properties under the condition of irradiation at 150 KGy doses, moisture content of 40%, and irradiation dose rate of 44 KGy/H. In addition, the change in the chemical composition of bamboo and mildew resistance was also explored in this paper. The major chemical components (cellulose, hemicellulose and lignin), as well as starch, were degraded, and the bamboo strips exhibited excellent mildew resistance after gamma-ray irradiation.

Bamboo is a versatile and sustainable natural resource that has been used for centuries by numerous cultures. Untreated bamboo, on the other hand, has limitations in terms of durability, strength, and decay resistance, which limit its usage in specific conditions. To overcome these restrictions and realise its full potential, researchers have investigated various bamboo treatment methods. This research presents an overview of bamboo treatment methods, effects on their performance, and emphasises possible uses in a variety of construction practises. The study looks into the usage of synthetic resin and synthetic rubber as bamboo protective coatings. These coatings improve durability, water repellence, dimensional stability, mechanical strength, and fungal growth resistance. They are also simple to use and contribute to environmentally friendly practises. To protect bamboo from fungal deterioration and insect infestation, chemical substances such as boron-based additions, zinc chloride, sodium pentachloro-phenate, and copper-chrome-arsenic (CCA) are employed as preservatives. These chemicals increase the longevity of bamboo while also ensuring its structural integrity. The use of epoxy resins to improve the tensile strength of bamboo composites is also being observed. It increases flexural and compressive strength by improving adhesion between bamboo fibres and the matrix. The use of epoxy glue also retains the natural strength and durability of bamboo. Heat treatment of bamboo entails treating it to high temperatures in order to enhance its qualities such as dimensional stability, hardness, and resistance to decay and insect assault. Heat-treated bamboo is used in building, furniture, flooring, and composite materials. Understanding and implementing these treatment procedures can help to encourage the wider use of bamboo as a sustainable and environmentally friendly construction material. The findings of this study have the potential to drive decision-making, encourage innovation, and have a positive impact on the environment, society, and economy. Bamboo may be used as a viable alternative to traditional materials in a variety of sectors by exploiting its unique qualities and improving its durability and strength.

In situ retention of lignin-rich bamboo green effectively improves the surface properties of flattened bamboo

Super-strong biomimetic bulk bamboo-based composites by a neural network interfacial design strategy