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基于粉的可生物降解复合材料:现场再挤压对结构和性能的影响

Liping Wang¹, Dexiang Li¹, Lei Ye²

¹State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.

International journal of biological macromolecules

|March 17, 2024

概括

通过现场再挤压优化基于粉的可生物降解复合材料 (SDC),提高了它们的机械和疏水性质. 两个挤出周期产生了最好的包装材料,改善了延长和模量.

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:

生物降解复合材料对于减少塑料废物至关重要.
基于粉的材料为传统塑料提供了一个可再生的替代品.
优化加工方法是提高材料性能的关键.

研究的目的:

研究现场再挤压对基于粉的可生物降解复合材料 (SDC) 的影响.
为了确定优质材料性能的最佳挤出周期数量.
评估SDC作为可持续包装材料的潜力.

主要方法:

使用热塑性粉 (TPS),聚乳酸 (PLA) 和聚 (丁烯基酸盐共甲) (PBAT) 制备SDC.
在SDC的in-situ再挤出为1,2,和3个周期.
结构性,机械性,热性和疏水性质的表征.

主要成果:

在现场重新挤出提炼TPS阶段并减少其尺寸.
挤出周期的增加导致键消失,结晶度增加,热稳定性降低.
经过2倍挤压 (SDC-2) 处理的SDC表现出优越的机械性能 (破裂时的延长,Young的模量) 和疏水性 (水接触角度为98.7°-101.7°).

结论:

在SDC制造中,两次in-situ重挤压是最佳的.
SDC-2表现出优异的薄膜性能,使其成为一个理想的包装材料.
这项研究引入了一种生产粉可降解复合膜的新方法,推进了可持续的包装解决方案.

关键词:

在现场重新挤出.粉包装材料粉包装材料基于粉的可生物降解复合材料热塑性粉的使用方法

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