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电喷过程的优化,以生产用于以PLA为基础的食品包装的素纳米粒子
Rodrigue Daassi1,2, Kalvin Durand1,2, Denis Rodrigue2
1Renewable Materials Research Centre (CRMR), Institute of Nutrition and Functional Foods (INAF), Université Laval, Quebec City, QC G1V 0A6, Canada.
Polymers
|July 14, 2023
概括
用电喷涂为聚乳酸 (PLA) 薄膜优化了米的素纳米颗粒,增强了食品包装的特性. 植入PLA的素纳米颗粒显著提高了机械强度,UV阻断和抗氧化能力.
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
- 纳米技术 纳米技术
背景情况:
- 先进的食品包装需要更薄的薄膜,具有优越的屏障性能.
- 开发可持续和有效的材料从生物质来源,如大米皮至关重要.
研究的目的:
- 优化电子喷雾参数,用于生产米树脂素纳米颗粒 (LNP).
- 将这些LNP纳入聚乳酸 (PLA) 薄膜,以增强其用于食品包装的特性.
主要方法:
- 使用电子喷雾方法来制备LNP,使用响应表面方法优化了诸如宁度,流速,应用于电压和尖端到采集器距离等参数.
- 动态光散射 (DLS) 和扫描电子显微镜 (SEM) 是LNP的特征.
- 基于PLA的薄膜是使用素/PLA,LNP/PLA和PLA移植的LNP混合物制成的.
主要成果:
- 优化的电喷条件产生了球形LNP (260 ± 10 nm),PDI为0.257 ± 0.02和ZP为-35.2 ± 4.1 mV.
- 与整洁的PLA相比,与PLA接种的LNP显示出均的分散和在断裂时改善的延伸 (高达4倍).
- 紫外线透射率显著降低 (至1.10±0.01%),同时保持可见光透明度.
- 抗氧化能力在LNP薄膜中增加了10倍,在PLA移植的LNP薄膜中增加了12倍.
结论:
- 电子喷雾对于生产优化的素纳米粒子是有效的.
- 植入PLA的素纳米颗粒显著增强了PLA膜的机械,光学和抗氧化性能.
- 开发的电影显示了可持续食品包装应用的巨大潜力.
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