Smart multilayered pH-sensitive nanocapsules were successfully fabricated using a Layer by Layer (LbL) process. The obtained products were characterized using FESEM, TEM, EDS and elemental mapping, zeta-potential, FTIR, TGA, SIMS and the Tafel polarization techniques. A 55% enhancement in ZrO₂ particle size was detected in FESEM and TEM images with a corona view after the LbL process. EDS and elemental mapping analysis and measurements of zeta potential indicated the well-defined layered deposition. FTIR showed the electrostatic bonding between tolyltriazole (TTA) molecules and different overlapping layers. The thermal analysis and SIMS confirmed that 2.7% TTA loaded in nanocapsules. Tafel polarization results showed successful surface protection due to self-releasing of TTA from nanocapsules at high and low pH solutions.

智能多层pH敏感纳米胶囊是使用逐层（LbL）工艺成功制造的。使用FESEM，TEM，EDS和元素映射，ζ电位，FTIR，TGA，SIMS和Tafel极化技术对所得产物进行表征。ZrO ₂增强55％LbL处理后，用电晕视图在FESEM和TEM图像中检测到粒径。EDS和元素映射分析以及zeta电位的测量表明，层状沉积定义明确。FTIR显示了甲苯基三唑（TTA）分子与不同的重叠层之间的静电键合。热分析和SIMS证实纳米胶囊中载有2.7％的TTA。Tafel极化结果表明，由于高和低pH溶液中TTA从纳米胶囊中自动释放，因此表面保护得到了成功。