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Updated: Jan 16, 2026

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The Diffusion of Passive Tracers in Laminar Shear Flow
Published on: May 1, 2018
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共同溶剂和溶剂对多元组分溶液中扩散相互作用参数的影响:通过Kirkwood-Buff理论获得新的见解
Jiyoung Yang1, Matthias Brosz2, Niklas Adebar3
1Analytical Development Biologicals, Development CMC BIOL, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Strasse 65, D-88397 Biberach (Riss), Germany.
The journal of physical chemistry. B
|September 29, 2025
概括
液体溶液的新数学表达式揭示了溶解物相互作用如何影响聚合. 这项工作促进了对复杂溶液的溶解物行为和稳定性的理解,有助于配方开发.
科学领域:
- 物理化学 物理化学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 了解多元组分溶液中的溶解物行为对于配方开发至关重要.
- 对于扩散相互作用参数的现有模型通常依赖于近似值.
- 治疗配方中的蛋白质聚合是一个重大挑战.
研究的目的:
- 为液体多元组分溶液中扩散相互作用参数开发新的数学表达式.
- 提供一个理论框架,整合扩散和热力学特性.
- 提供对二进制和三进制解决方案中的溶解物联和聚合机制的见解.
主要方法:
- 将柯克伍德-巴夫积分纳入理论表达式.
- 从溶解物热力学活性系数的对数导数中导出扩散相互作用参数.
- 对二进制和三进制解决方案模型的衍生式的应用.
- 使用水溶液和单克隆抗体配方的实验数据进行验证.
主要成果:
- 衍生了扩散相互作用参数的新表达式,适用于二进制,三进制和更高阶的解决方案,没有近似.
- 在二进制溶液中,溶解性质被确定为溶解物联的关键驱动因素.
- 在三元解决方案中,发现交叉相互作用占主导地位,影响聚合.
- 实验数据支持了对简单水溶液和复杂蛋白质配方的理论预测.
结论:
- 开发的数学表达式提供了一个更准确,更全面的框架,用于理解复杂的解决方案中溶解物的行为.
- 这些发现为溶解物结合和聚合提供了机理性的见解,特别是三元系统中交叉相互作用的作用.
- 这项工作促进了配方的合理设计,以减轻蛋白质聚合和提高产品稳定性,特别是对于像单克隆抗体 (mAbs) 等生物药物.
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