基于咖啡废弃物的生物聚合物复合混合物用于包装开发的表征
Gonzalo Hernández-López1, Laura Leticia Barrera-Necha1, Silvia Bautista-Baños1
1Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Carretera Yautepec-Jojutla km. 6, Calle CEPROBI No. 8. Col. San Isidro, Yautepec C.P. 62731, Morelos, Mexico.
Foods (Basel, Switzerland)
|June 13, 2025
概括
咖啡副产品,包括咖啡羊皮纸 (CP) 和咖啡油 (CO),用于制造可生物降解的聚合物混合带. 这些环保材料显示出食品包装应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 可持续材料 可持续材料
背景情况:
- 越来越多的环境问题推动了废弃副产品在聚合物混合物中的使用.
- 咖啡废物,特别是咖啡羊皮 (CP),为材料开发提供了可持续的资源.
研究的目的:
- 为了将咖啡羊皮 (CP) 和咖啡油 (CO) 纳入可生物降解的聚乳酸 (PLA) 和聚 (丁基酸盐-共甲酸盐) (PBAT) 聚合物混合物.
- 为了提高这些混合物的性能,使用功能化和素纳米粒子 (ChNp) 涂层用于潜在的食品包装应用.
主要方法:
- 挤出工艺,以制备含有CP和CO的聚合物混合带.
- CP的功能化,应用ChNp涂层,并使用SEM,TGA和DSC进行表征.
- 评估机械性能 (模量,拉力强度,破裂时的延长).
主要成果:
- 邻近分析显示,CP中含有显著的纤维素和红素含量.
- 功能化改善了PLA/PBAT混合物的热稳定性和可混合性.
- 加入CP和使用ChNp涂层降低了Young的模量和拉伸强度,但没有影响破裂时的延长.
结论:
- 在PLA/PBAT混合物中再利用咖啡行业的副产品 (CP和CO) 是可行的.
- 基托桑纳米颗粒涂层提供了一个纳米结构的抗微生物表面.
- 开发的材料显示了可持续食品包装解决方案的前景.
相关概念视频
Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
Additives and Fillers in Concrete
92
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
92


