摘要
本文报道了用红外光谱方法鉴定的高分子和小分子受阻胺光稳定剂。此法包括溶解聚丙烯,接着用H_2SO_4沉淀并萃取,所得水溶液用NaOH中和并用二氯甲烷萃取,除去溶剂后残渣用IR鉴定。
The paper describes an IR method, for the identification of polymeric and moromeric HALS.The method involves dissolution of the polypropylene followed by precipitation and extractionwith sulphuric acid. The separated aqueous phase was neutralised with sodium hydroxide andextracted with methylene chloride. The solvent was evaporated and the residue of HALS wasidentified by IR.
