In this work, cellulose fibres extracted from bamboo culms were used to fabricate two types of cellular materials: rigid foams and fibrous networks. A relatively simple and low-technology fabrication method is presented, using natural binders and blowing agents to manufacture rigid foams, and fibrillation by partial hydrolysis in H₂SO₄ to manufacture fibrous networks. The compressive response is related to the internal microstructure and processing parameters. In the case of fibrous networks, the achievable relative density range is determined by the length of initial fibres and extent of external fibrillation. The compressive properties are dictated both by the density of the network and strength of the fibrous bridges, showing a linear stiffness-density relationship due to the length of fibres, and an inverse relationship at increased external fibrillation. The rigid foams showed an orthotropic internal microstructure but nearly isotropic compressive response, due to the influence of the interpenetrating void structure on the deformation and fracture mechanisms. The results show the potential of bamboo-fibre porous materials as low cost, lightweight structural materials.

在这项工作中，从竹杆提取的纤维素纤维被用于制造两种类型的多孔材料：硬质泡沫塑料和纤维状网络。提出了一种相对简单且技术含量较低的制造方法，该方法使用天然粘合剂和发泡剂制造硬质泡沫塑料，并通过在H ₂ SO _4中进行部分水解来原纤化制造纤维网络。压缩响应与内部微观结构和加工参数有关。在纤维网络的情况下，可达到的相对密度范围由初始纤维的长度和外部原纤化程度决定。压缩性能是由网状结构的密度和纤维桥的强度所决定的，由于纤维的长度而显示出线性的刚度-密度关系，而在外部纤维化增加时则呈反比关系。硬质泡沫由于相互渗透的空隙结构对变形和断裂机理的影响而表现出正交各向异性的内部微观结构，但几乎具有各向同性的压缩响应。结果表明竹纤维多孔材料作为低成本，轻质结构材料的潜力。