Rubber nanocomposites with high gas barrier property have extensive application prospects in sealing and packing industry, while developing a novel and cost-effective rubber-based material with low gas permeability and good mechanical property still remains a challenge. Herein, we designed and fabricated an excellent gas barrier film by using polyvinyl pyrrolidone modified ultrathin layered double hydroxide nanoplatelets (U-mLDH) and nitrile butadiene rubber (NBR) as building blocks. The resultant (U-mLDH/NBR)₃₀ film displays significantly decreased (reduced by 92.2% compared with NBR film) oxygen transmission rate with 0.626 cm³ m^–2 day^–1 atm^–1, and much lower relative permeability in comparison with reported rubber composites. The improved gas barrier performance is ascribed to the prolonged passage of oxygen molecules and the decreased free space arising from large aspect ratio of U-mLDH and good interfacial compatibility. In addition, the (U-mLDH/NBR)₃₀ film also possesses high thermal stability and satisfactory mechanical property, which would guarantee its practical applications.

具有高阻气性的橡胶纳米复合材料在密封和包装工业中具有广阔的应用前景，而开发一种新型且具有成本效益的低透气性和良好机械性能的橡胶基材料仍然是一个挑战。在这里，我们以聚乙烯吡咯烷酮改性的超薄层状双氢氧化物纳米片（U-mLDH）和丁腈橡胶（NBR）为基础，设计和制造了一种优异的阻气膜。所得的（U-mLDH / NBR）₃₀膜在0.626 cm ³  m ^–2 天^–1  atm ^–1时的氧气透过率显着降低（与NBR膜相比降低了92.2％）。，与报道的橡胶复合材料相比，相对渗透率要低得多。改善的气体阻隔性能归因于由于U-mLDH的高长径比和良好的界面相容性，使氧分子的通过时间延长和自由空间减少。另外，（U-mLDH / NBR）₃₀膜还具有较高的热稳定性和令人满意的机械性能，这将保证其实际应用。