为了研究木质素改性产物(GCL1-JB)的结构对其分散稳定性及吸附特性的影响，通过向GCL1-JB水溶液中添加二氧六环制备一系列不同构象的GCL1-JB模型。利用分散稳定仪和逐层自组装技术研究不同构象GCL1-JB对水泥的分散稳定性及其吸附特性，发现GCL1-JB的构象越伸展，吸附量越小，但对水泥的分散稳定性更好。GCL1-JB构象较伸展时，能平坦地吸附在固体表面，形成致密平整的吸附膜，有效阻止水泥颗粒间的相互凝聚。这也是GCL1-JB分散稳定性优于木质素磺酸钠的重要原因。

In order to reveal the influence of the structure of the modified lignin GCL1-JB on its adsorption characteristics and dispersion stability, a series of GCL1-JB of different conformations were prepared by adding dioxane into the aqueous solution of GCL1-JB. Then, the dispersion stability of cement/GCL1-JB suspension and the adsorption characteristics of GCL1-JB of different conformations were determined by using a TurbiscanLab analyzer and by means of the sequential adsorption process. The results show that with the increase of the stretch conformation of GCL1-JB, the amount of GCL1-JB adsorbed on a solid surface decreases while the dispersion stability of GCL1-JB for cement particles increases. In addition, the GCL1-JB of more stretch conformation can adsorb flat  and forms a compact and smooth film, thus effectively preventing cement particles from agglomerating. This is why the dispersion stability of GCL1-JB is superior to that of sodium lignosulfonate.