大学化学 >> 2021, Vol. 36 >> Issue (6): 2007004.doi: 10.3866/PKU.DXHX202007004

化学实验 上一篇    下一篇

棉杆木质素提取及其对聚丙烯抗氧化性能分析的综合性实验

何明宇, 李颖, 买买提江·依米提()   

  • 收稿日期:2020-07-02 录用日期:2020-08-10 发布日期:2020-08-13
  • 通讯作者: 买买提江·依米提 E-mail:mmtj10@sina.com
  • 作者简介:买买提江·依米提, Email: mmtj10@sina.com
  • 基金资助:
    国家自然科学基金(21764013);国家级一流专业建设项目;自治区研究生科创项目(XJ2020G033)

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 E-mail:mmtj10@sina.com

摘要:

介绍了一个以从新疆废弃棉花秸秆中提取出的木质素为原料及其对聚丙烯(PP)抗氧化性能为一体,针对高分子相关专业开设的综合性实验。基于新疆大学高分子相关专业的实际情况,将教师的科研项目与本科教学相结合,该综合性实验主要包括了棉杆木质素的提取、人工加速老化试验和抗氧化性能表征分析的特色实验体系。在实践教学中,学生不仅学习了棉杆木质素的提取过程,还认识了人工加速老化试验对材料的老化机理及其对抗氧化性能的影响,也拓宽了对专业知识的综合理解,为科研成果转化为教学实验提供了借鉴。

关键词: 综合性实验, 棉杆木质素, 聚丙烯, 老化, 抗氧化性能

Abstract:

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

MSC2000: 

  • G642.0