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基于糖酒精的V型深度欧性溶剂的低温表征,用于抗结冰和冷保存应用
Akshat S Mallya1, Priyanka Yadav1, Stephanie Zakhia1
1Department of Mechanical Engineering, University of Minnesota Twin Cities, 111 Church Street SE, Minneapolis, MN 55455, USA.
概括
基于糖酒精的深度浸泡溶剂 (DES) 在抗结冰和冷保存方面表现有前途. 这些可持续的DES有效控制冰的形成,并为各种应用提供可调节的特性.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 绿色化学 绿色化学
背景情况:
- 深度乙溶剂 (DESs) 正在成为多功能材料.
- 基于糖醇的DES提供可调节的物理化学特性.
- 在极端温度保护和冰控制中的应用是积极研究的领域.
研究的目的:
- 为了合成和表征基于糖醇的V型深度环氧溶剂 (DES).
- 评估它们对抗结冰和冷保存应用的潜力.
- 评估它们的可持续性和冰控制机制.
主要方法:
- 基于糖醇的V型DESs的合成.
- 物理化学分析 (例如,水活动,基本性).
- 热物理特性 (差分扫描热量计 - DSC,点,聚变度).
- 低温拉曼光谱用于冰的抑制分析.
- 冰晶形态分析.冰晶形态分析.
- 预先的可持续性评估.
主要成果:
- 糖酒精-氨基酸DES比糖酒精-糖DES略有基础.
- 所有DES都表现出低水活性和高玻璃过渡温度,适合冷保存中的玻璃化.
- 稀释的DES显示点和融合热量低于水,对抗结冰有益.
- 拉曼光谱显示了基于DES组成和稀释的不同抑制冰的效率.
- 与纯水相比,DESs减少了冰晶的大小,证明了冰的控制能力.
- 可持续性评估表明与绿色化学原则保持一致.
结论:
- 基于V型糖醇的DES是有效和可持续的冰控制剂.
- 这些DES显示出对抗结冰和冷保存应用的巨大潜力.
- 这些DES的可调性性质允许基于特定应用需求进行优化.
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