Recently, the demand for sustainable materials has given rise to new research interest in the intrinsic properties and applications of bamboo and its derivatives. Hygroscopicity plays an important role in the application of bamboo, and it is known that the size of the material particles affects the hygroscopicity of the material. To further understand the effect of the particle size, the bamboo fiber with a simple structure was destroyed by grinding, then equilibrated and dynamic sorption was studied by dynamic vapor sorption measurements. The obtained moisture sorption isotherm results showed that the maximum value of the moisture content of 19.69% was obtained in the medium-size fiber (MF) and the minimum value of 15.76% was obtained in the severely ground fiber (SF). As expressed by the slope of the fitting curves, MF showed the highest hygroscopic ability for the relative humidity > 30%. In addition, the sorption isotherm data were fitted by the Guggenheim-Anderson-de Boer (GAB) model, and the fitting results indicated small changes in the fiber monolayer water content between the samples with different fiber sizes. The largest difference of 0.53% was observed between control-size fiber (CF) and medium-size fiber (MF). Therefore, it was concluded that the differences between the moisture contents of the fibers with different sizes are mainly due to the differences in multilayer water sorption.

最近，对可持续材料的需求引起了人们对竹及其衍生物的内在特性和应用的新研究兴趣。吸湿性在竹子的应用中起重要作用，并且已知材料颗粒的尺寸影响材料的吸湿性。为了进一步了解粒径的影响，将具有简单结构的竹纤维通过研磨破坏，然后进行平衡，并通过动态蒸气吸附测量研究了动态吸附。所获得的水分吸附等温线结果表明，在中型纤维（MF）中获得的水分含量最大值为19.69％，在重磨纤维（SF）中获得的最小值为15.76％。如拟合曲线的斜率所示，MF在相对湿度> 30％时表现出最高的吸湿能力。另外，通过古根海姆-安德森-德波尔（GAB）模型拟合了吸附等温线数据，拟合结果表明不同纤维尺寸的样品之间纤维单层含水量的变化很小。对照尺寸纤维（CF）和中型纤维（MF）之间的最大差异为0.53％。因此，可以得出结论，具有不同尺寸的纤维的水分含量之间的差异主要归因于多层吸水率的差异。拟合结果表明，不同纤维尺寸的样品之间纤维单层含水量的变化很小。对照尺寸纤维（CF）和中型纤维（MF）之间的最大差异为0.53％。因此，可以得出结论，具有不同尺寸的纤维的水分含量之间的差异主要归因于多层吸水率的差异。拟合结果表明，不同纤维尺寸的样品之间纤维单层含水量的变化很小。对照尺寸纤维（CF）和中型纤维（MF）之间的最大差异为0.53％。因此，可以得出结论，具有不同尺寸的纤维的水分含量之间的差异主要归因于多层吸水率的差异。