The electrostatic sequential adsorption process was monitored by UV-vis spectrosxopy, and the morphology of the SL/PDAC multilayers was observed by AFM.

• 木质素磺酸钠的自组装过程用紫外-可见光吸收光谱来监控，而自组装膜的表面形貌用原子力显微镜来观察。