关于聚甲二,五酸) /聚乳酸) 混合物和多块共聚物的选择性酶回收
Chiara Siracusa1, Felice Quartinello1,2, Michelina Soccio3,4
1acib GmbH, Konrad-Lorenz-Strasse 20, 3430 Tulln, Donau, Austria.
概括
聚二甲基二,五二碳酸盐 (PPeF) 和聚乳酸 (PLA) 混合物的酶去聚合表明了PPeF的水解. 2,5-furandicarboxylic 酸的选择性回收使PPeF重合成成为可能,支持可持续的包装回收利用.
科学领域:
- 聚合物科学 聚合物科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 聚二甲基2,5-二碳酸盐 (PPeF) 提供了出色的气体屏障性能和灵活性.
- 将PPeF与聚乳酸 (PLA) 混合,可以增强PLA在食品包装中的性能.
- 开发这些生物基聚合物的有效回收策略对于可持续性至关重要.
研究的目的:
- 研究PLA/PPeF混合物和共聚物的酶去聚合.
- 评估选择性单体回收用于聚合物复合的可行性.
- 探索可持续包装材料的新型回收途径.
主要方法:
- 使用丁酶1 (Thc_Cut1) 的酶去聚合.
- 对水解产品的减重和高性能液态染色学 (HPLC) 的分析.
- 表面形态 (SEM),FTIR和NMR用于结构确认.
- 选择性结晶用于单体回收和复合.
主要成果:
- 在PLA/PPeF混合物中,PPeF含量较高的水解速率增加.
- 而PLA-PPeF块共聚合物对酶性水解有更强的抗性.
- 通过分析技术证实了PPeF成分的优先水解.
- 获得了75%产量的2,5-furandicarboxylic 酸的选择性回收.
结论:
- 酶去聚合是一种可行的策略,用于回收含有PPeF的材料.
- 选择性回收2,5-furandicarboxylic 酸允许进行PPeF复合.
- 这些发现支持生物包装的可持续生命周期的发展.
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