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来自消耗咖啡粉的生物基粘合剂:一种可持续的途径,使用中长链多基酸

Elisabetta Borselleca¹, Luca Gargiulo², Pierfrancesco Cerruti²

¹Department of Chemical Sciences, University "Federico II", Naples, Italy; Institute of Polymers, Composites and Biomaterials, CNR-IPCB, Pozzuoli, Naples, Italy.

International journal of biological macromolecules

|July 10, 2025

概括

这项研究表明,使用消耗的咖啡粉油来制造一种生物基压力敏感粘合剂 (PSA). 这种可持续材料对食品包装有很大希望,尤其是在基于纤维素的表面上.

科学领域:

生物技术和材料科学生物技术和材料科学
可持续的高分子.
粘合技术的技术粘合技术

背景情况:

消耗的咖啡粉 (SCG) 是一个重要的废物流,具有价值化潜力.
中长链聚酸酸 (mcl-PHAs) 是具有可调节性质的可生物降解聚合物.
开发生物基粘合剂对于可持续的包装解决方案至关重要.

研究的目的:

为了从SCG油中合成mcl-PHA.
评估SCG衍生的mcl-PHA作为食品包装的生物基压敏粘合剂 (PSA) 的性能.
研究各种基板上的粘合性质,并评估可重复使用性.

主要方法:

使用SCG油的生物反应器发酵*Pseudomonas resinovorans*.
关于mcl-PHA单体组成和不和的特征.
评估PSA属性,包括不钢,LDPE和纤维素的接,凝聚力,粘性,膝盖剪切和剥离强度.

主要成果:

mcl-PHA的产量为40% (g_聚合物/g_CDW) 和异质单体组成 (C6-C18) 含有20%的不和.
由于高极表面能量,PSA表现出强大的粘附和粘弹性恢复,在纤维素上具有显著的高剥离强度 (37.2 N m-1).
在低密度聚乙烯 (LDPE) 上观察到较弱的粘合力 (3.8 N m-1).

结论:

由SCG衍生的mcl-PHA是一种可行的可持续PSA候选物,特别适用于诸如纤维素之类的极地基质.
在LDPE等非极地表面上实现强粘附仍然存在挑战.
通过乙溶解回收mcl-PHA的能力支持其在包装应用中重复使用的潜力.

关键词:

粘合剂是一种粘合剂.发酵发酵是一个过程.中等链条长度 PHA PHA 聚酸酸多基甲酸伪虫树脂发酵菌伪虫树脂发酵菌伪虫树脂发酵菌消耗的咖啡粉已经用完了.粘性粘性粘性

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