The infrared spectroscopy (IR) of washing demonstrated that the species were tribopolymers with similar structure to poly(n-butyl acrylate) (PBA).

• 铁屑洗液的红外（IR）光谱表明，在摩擦表面原位生成了摩擦聚合物，其结构与聚丙烯酸正丁酯(PBA)相似；