中国塑料2025，Vol.39Issue(2)：72-76,5.DOI:10.19491/j.issn.1001-9278.2025.02.013
新型木素基成核剂对再生PET性能的影响及表征
Effect of novel lignin-based nucleating agents on performance of regenerated PET
刘盛 1王茜 1刘顺 1刘海棠1
作者信息
- 1. 天津科技大学轻工科学与工程学院,天津市纸浆造纸重点实验室,天津 300457
- 折叠
摘要
Abstract
In this study,lignin was extracted from papermaking black liquor and then used as a new green lignin-based nu-cleating agent for the modification of poly(ethylene terephthalate)(PET).This obtained lignin was compared with tradi-tional sodium benzoate and talc nucleating agents,and its microstructure,crystallization and mechanical properties were characterized.The results indicated that the crystallization properties of the regenerated PET materials were improved by adding different nucleating agents.Among these nucleating agents,the lignin-modified regenerated PET obtained the most significant improvement in the degree of crystallinity up to 32.65%,which was increased by 12.11%compared to that of the pristine regenerated PET.The semi-crystallization time of the modified regenerated PET was reduced by 60%.The recycled PET also obtained a significant improvement in the mechanical properties after modification,fol-lowed by an increase in the elongation at break.In particular,the lignin-modified regenerated PET showed enhanced ten-sile strength of 42.95 MPa,which increased by 104%compared to that of the pristine regenerated PET,followed by an increase in the elongation at break by 2.46%.关键词
成核剂/结晶度/半结晶时间/拉伸强度Key words
nucleation agent/crystallinity/semi-crystallization time/tensile strength分类
化学工程引用本文复制引用
刘盛,王茜,刘顺,刘海棠..新型木素基成核剂对再生PET性能的影响及表征[J].中国塑料,2025,39(2):72-76,5.
