Lignocellulosic biomass material sourced from plants and herbaceous sources is considered as a prospective feedstock of inexpensive, potentially carbon-neutral energy. Lignocellulosic biomass is structurally built on cellulose, hemicellulose, and lignin, which are present in varying concentrations based on the feedstock type and play distinct and not well understood mechanical functions in the flow behavior. The frictional characteristics of lignocellulosic biomass particulates influence their flow behavior in biorefineries. Thus, it is important to fundamentally investigate the relative contribution of cellulose, hemicellulose, and lignin to the frictional behavior. However, these three biopolymers are interwoven into a complex matrix in the lignocellulosic biomass, thus making it hard to quantify the contribution of each biopolymer. In this study, we selectively remove hemicellulose from switchgrass and investigate the effects of its diminishing concentration on the coefficient of friction.

We observed that the angle of repose and, therefore, the coefficient of friction for a loose assembly of the control and treated switchgrass samples decrease with decreasing hemicellulose content. This indicates the frictional resistance to flow for biomass particulate assemblies is at least proportional to the hemicellulose content. We also established that the observed changes in the frictional behavior were not due to particle morphological characteristics.

来自植物和草本来源的木质纤维素生物质材料被视为廉价的潜在潜在碳中性能源的原料。木质纤维素生物质在结构上建立在纤维素，半纤维素和木质素上，纤维素，半纤维素和木质素的浓度根据原料类型的不同而不同，并且在流动行为中具有独特的，尚未广为人知的机械功能。木质纤维素生物质颗粒的摩擦特性影响其在生物精炼厂的流动行为。因此，从根本上研究纤维素，半纤维素和木质素对摩擦行为的相对贡献很重要。然而，这三种生物聚合物交织在木质纤维素生物质中的复杂基质中，因此难以量化每种生物聚合物的贡献。

我们观察到，随着半纤维素含量的降低，对照和处理过的柳枝samples样品的松散组装时，休止角以及因此的摩擦系数均降低。这表明生物质颗粒组件的流动摩擦阻力至少与半纤维素含量成正比。我们还确定，观察到的摩擦行为变化不是由于颗粒形态特征引起的。