In this study, cellulose nanofibers (CNFs) from softwood and hardwood kraft pulps were prepared with different hemicellulose contents, and the effects of the hemicellulose compositions and contents on the interaction between CNFs were studied. In addition, the effects of CNF interaction on the CNF dispersion stability and viscosity characteristics in the aqueous state were investigated. Using quartz crystal microbalance with dissipation, the results of the interaction analysis revealed that hemicellulose moderated the strength of the interaction between CNFs, and the intensity of the interaction changed according to the hemicellulose compositions. The interaction between galactoglucomannans was stronger than that between glucuronoxylans, and CNFs prepared from softwood pulp containing mainly galactoglucomannan showed stronger interaction between CNFs than those prepared from hardwood pulp containing mainly glucuronoxylan. The presence of hemicelluloses on the surface of CNFs improved the dispersion stability and increased the viscosity. However, the intensity of the interaction between CNFs, which is dependent on the type of hemicellulose, did not affect these properties. The properties of CNFs in the aqueous state are determined by not only the interaction between CNFs but also several factors such as the morphology of CNFs and physical properties of hemicelluloses.

本研究以软木和硬木牛皮纸浆为原料，分别制备了半纤维素含量不同的纤维素纳米纤维，研究了半纤维素的组成和含量对半纤维素之间相互作用的影响。另外，研究了CNF相互作用对CNF分散稳定性和在水状态下的粘度特性的影响。使用具有耗散的石英晶体微量天平，相互作用分析的结果表明，半纤维素调节了CNF之间的相互作用强度，并且相互作用的强度根据半纤维素的组成而变化。半乳葡甘露聚糖之间的相互作用比葡糖醛酸木聚糖之间的相互作用强，由主要含有半乳葡甘露聚糖的软木纸浆制备的CNF与由主要含有葡糖醛酸木聚糖的硬木纸浆制备的CNF之间具有更强的相互作用。CNF表面上半纤维素的存在改善了分散稳定性并增加了粘度。但是，取决于半纤维素类型的CNF之间的相互作用强度并不影响这些特性。处于水性状态的CNF的性质不仅取决于CNF之间的相互作用，还取决于诸如CNF的形态和半纤维素的物理性质的若干因素。CNF之间相互作用的强度取决于半纤维素的类型，但并不影响这些特性。处于水性状态的CNF的性质不仅取决于CNF之间的相互作用，还取决于诸如CNF的形态和半纤维素的物理性质的若干因素。CNF之间相互作用的强度取决于半纤维素的类型，但并不影响这些特性。处于水性状态的CNF的性质不仅取决于CNF之间的相互作用，还取决于诸如CNF的形态和半纤维素的物理性质的若干因素。