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用酸盐,酸盐和酸盐通过挤出修改草粉:酸化,水解和塑化
Phanwipa Wongphan1, Cristina Nerin2, Nathdanai Harnkarnsujarit1,3
1Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, 50 Ngam Wong Wan Rd., Latyao, Chatuchak, Bangkok 10900, Thailand.
Polymers
|October 16, 2024
概括
用酸等添加剂挤出草粉修改了其结构,增强了其抗菌性质. 这项研究探讨了不同化学修饰如何影响聚烯混合物的粉特性和性能.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
背景情况:
- 大麻粉是一种多功能生物聚合物,具有材料应用的潜力.
- 挤出加工提供了一种热力学方法来改变粉的特性.
- 化学添加剂可以进一步定制热塑性麻粉 (TPS) 的特性.
研究的目的:
- 研究与各种酸盐和其他化学添加剂混合的热塑性麻豆粉 (TPS) 的相互作用和形态.
- 检查这些添加剂对挤出TPS的化学结构,热特性,吸水性和溶解性的影响.
- 评估聚混合物中改性TPS的抗菌特性.
主要方法:
- 双螺丝挤压加工塑化麻粉的添加剂:四酸 (Na4P2O7),三聚酸 (Na5P3O10),六甲 (Na6(PO3) 6),红甲酸 (C6H7O6Na) 和酸 (NaNO2).
- 使用1H NMR和ATR-FTIR进行化学结构分析.
- 对热性质,吸水性,溶解性和对大肠杆菌和金黄色葡萄球菌的抗菌疗效的评估.
主要成果:
- 挤出破坏了粉的气结合;酸盐添加剂诱导了酸化,而酸盐和酸盐则导致了水解.
- 添加剂阻碍了粉再结晶,增加了无形分数,改变了热特性和稳定性.
- 修改后的TPS在聚混合物中表现出增强的抗菌活性,酸显示出最高的疗效.
结论:
- 通过酸化或酸水解进行粉修饰显著影响挤出木TPS的热性质,形态和水友性.
- 添加剂的选择和度对于为特定材料应用量身定制TPS至关重要,包括抗菌功能.
- 改性麻粉作为一种功能性生物聚合物,有望成为先进材料开发的功能生物聚合物.
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