The near-spherical silica nanoparticles with polyvinyl alcohol (denoted as PVA-SiO₂) or polyethylene glycol (denoted as PEG-SiO₂) as surface modifiers were loaded onto graphene oxide nanosheets (denoted as GO) to prepare PVA(PEG)-SiO₂-GO nanocomposites. The nanocomposites well dispersed in water were then compounded with maleic anhydride (MA) - acrylic acid (AA) copolymer (denoted as PMAAA) to prepare new nanocomposite tanning agents (denoted as PVA(PEG)-SiO₂-GO/PMAAA). The hydrothermal stability, thickness increase, mechanical properties, flame retardancy and antistatic property, etc. of the leather tanned with PVA(PEG)-SiO₂-GO/PMAAA were founded to be improved in a significant way compared with those of the leather tanned with the commercial acrylic resin (CHINATAN OM) and pure PMAAA copolymer tanning agents. The acquired excellent tanning properties may be related to the synergistic tanning effects of near-spherical silica nanoparticles and thin-layered graphene oxide nanosheets in leather tanning process. Especially, the highest shrinkage temperature of the wet-white sheepskin tanned with PVA-SiO₂-GO/PMAAA reached 71 ^◦C and the thickness increase reached 190% without chrome tanning agents.

将具有聚乙烯醇（表示为PVA-SiO ₂）或聚乙二醇（表示为PEG-SiO ₂）作为表面改性剂的近球形二氧化硅纳米颗粒负载到氧化石墨烯纳米片（表示为GO）上，以制备PVA（PEG）-SiO ₂ -GO纳米复合材料。然后将分散在水中的纳米复合材料与马来酸酐（MA）-丙烯酸（AA）共聚物（表示为PMAAA）混合，以制备新的纳米复合鞣剂（表示为PVA（PEG）-SiO ₂ -GO / PMAAA）。PVA（PEG）-SiO ₂鞣制皮革的水热稳定性，厚度增加，机械性能，阻燃性和抗静电性等-GO / PMAAA被发现与使用商业丙烯酸树脂（CHINATAN OM）和纯PMAAA共聚物鞣革剂鞣制的皮革相比有显着改进。获得的优异的鞣制性能可能与皮革鞣制过程中近球形二氧化硅纳米颗粒和薄层氧化石墨烯纳米片的协同鞣制效果有关。特别是，随着PVA-的SiO鞣的湿白羊皮的最高收缩温度₂ -GO / PMAAA达到71 ^◦ C和厚度的增加，而不铬鞣剂达到190％。