This paper focuses on the impact of humidity on the physical and mechanical behaviour of the bamboo/flax hybrid fibre-reinforced epoxy matrix composite. Composites made using bamboo fibre, and flax fibre-reinforced epoxy resin is immersed in water at room temperature (25°C) for 60 days and at 85°C for 2 days. The composite undergoes structural and microstructural changes at high temperatures (85°C) in 25 h. At both temperatures, composites that were not treated and treated had the decreased swelling behaviour, with 9% of composites treated with NaOH showing the highest level of swelling. Water absorption in the biocomposite is increasingly influenced by the poor bond between the fibres and the matrix. The results show that the maximum tensile strength for both conditions has an increase of about 2% at room temperature and a 13.6% reduction at 85°C compared with room temperature immersion.

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The use of agents in the form of nanochitosan to develop active bioplastics offers a new way to modify the transport properties and release of active compounds while increasing the mechanical resistance and compatibility between polymers. This study aims to study the effect of mixing two polymers in the form of polylactic acid (PLA) and polycaprolactone (PCL) as a matrix and 10% (w/v) filler. The matrix for bioplastic film-forming was prepared by mixing 8 g PLA and 2 g PCL. The internal film and surface microstructures were characterized by scanning electron microscopy (SEM) and interactions between the particles using FT-IR. Mechanical physical properties were reviewed using ASTM D638. The results show that amount of filler composition promotes a significant change in the microstructure of the film and is associated with to improve properties. The amount of nanochitosan (0.9 g) and catechin (0.1) was homogeneously distributed. As a consequence. However, when the filler composition is varied in other quantities, the tensile strength will fluctuate.

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