University Chemistry ›› 2021, Vol. 36 ›› Issue (6): 2007004.doi: 10.3866/PKU.DXHX202007004

• Chemistry Laboratory • Previous Articles     Next Articles

The Extraction of Lignin from Cotton Stalks and the Comprehensive Experiment of the Study on the Antioxidant Properties of Polypropylene

Mingyu He, Ying Li, Yimit Mamatjan()   

  • Received:2020-07-02 Accepted:2020-08-10 Published:2020-08-13
  • Contact: Yimit Mamatjan


A comprehensive experiment was conducted on the lignin extracted from waste cotton straw in Xinjiang and its antioxidant properties of polypropylene (PP). Based on the actual situation of polymer related major in Xinjiang University, combining the teachers' scientific research projects with the undergraduate teaching, the comprehensive experiment mainly included the extraction of lignin from cotton stalks, artificial accelerated aging experiment and characteristic experimental system of antioxidant characterization analysis. In the practical teaching, students not only learned the extraction process of lignin from cotton straw, but also understood the effect of artificial accelerated aging experiment on the aging mechanism of materials and its anti-oxidation properties, and broadened their comprehensive understanding of professional knowledge, which provided reference for the transformation of scientific research results into teaching experiments.

Key words: Comprehensive experiment, Cotton lignin, Polypropylene, Aging test, Oxidation resistance


  • G642.0