生物降解灵活的共聚乙烯模仿聚乙烯 (?? 乙烯基酸盐-co-甲酸盐) 的素来源的芳香剂
Tam T Nguyen1, Maria Nelly Garcia Gonzalez2, Jonas Engqvist3
1Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00, Lund, Sweden.
研究人员从素中开发了新的生物降解型共聚合物,为化石塑料提供了可持续的替代品. 这些材料具有可比的生物降解率和改进的氧气屏障,适合柔性食品包装.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续材料 可持续材料
背景情况:
- 聚乙烯基酸盐-联合甲酸盐 (PBAT) 是一种广泛使用的可生物降解聚.
- 目前的PBAT生产依赖于化石基甲酸盐,这引发了环境问题.
- 开发可持续的替代品对于减少对化石燃料的依赖至关重要.
研究的目的:
- 通过使用素来源的芳香单体合成新型PBAT模仿共聚体.
- 评估环境影响,包括温室气体排放和溶剂使用.
- 评估合成共聚合物的热性能,生物降解率和氧障碍性能.
主要方法:
- 合成了两系列模仿PBAT的共聚合物.
- 素来源的芳香单体 (甲基4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 瓦尼拉酸甲基和甲基4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ) 与亚利法二甲基酸盐和1,4-butanediol的结合.
- 温室气体排放的生命周期评估和溶剂使用的评估.
- 热稳定性,玻璃过渡温度和结晶性的表征.
- 90天的有氧生物降解实验.
- 测量共聚膜的氧气屏障特性.
主要成果:
- 成功合成了具有可调节性质的PBAT模仿型共聚合物.
- 与PBAT相比,已证明可比或增强的生物降解率.
- 与PBAT相比,实现了更好的氧气气体屏障特性.
- 生命周期评估表明,单体合成对环境的影响减少.
结论:
- 素衍生型共聚合物为传统PBAT提供了一个有前途的可持续替代品.
- 这些材料具有有利的生物降解和屏障特性,可用于灵活的食品包装.
- 该研究强调了生物基单体在制造高性能,环保聚合物的潜力.
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