一个分子热力学模型的同化在解决方案的多聚和相反电荷的菌体
Mohsen Ghasemi1, Sumanth N Jamadagni1, Eric S Johnson1
1The Procter & Gamble Company, Mason, Ohio 45040, United States.
Langmuir : the ACS journal of surfaces and colloids
|July 20, 2023
概括
一个新的分子热力学模型准确地预测了个人护理产品中的协,指导了配方设计,以获得更好的活跃交付和性能. 没有硫酸盐的表面活性剂显示了增强的协体形成.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 配方科学科学 配方科学
背景情况:
- 由洗发水等个人护理产品的稀释驱动的凝聚,对于沉积活性成分和提供滑至关重要.
- 现有的模型缺乏对复杂的聚合物混合物,混合和盐的综合热力学考虑.
- 个人护理配方的合理设计需要准确预测协阶段的行为.
研究的目的:
- 开发和验证一个分子热力学模型,用于预测阴性聚合物-表面活性剂系统中的协.
- 为了研究组合,电荷和结合能量的对同相位图的影响.
- 为了合理化特定表面活性剂 - 阴离子聚合物系统的实验协数据.
主要方法:
- 制定一个分子热力学模型,包括混合,疏水相互作用,结合能量和静电相互作用.
- 对二甲基硫酸盐 (SDS),甲基可可 taurate (Taurate) 和 Lauryl Alaninate (Alaninate) 的同化进行实验性调查,用一种阴离子氧乙纤维素 (cat-HEC).
- 参数化方案是为了获得结合能量和用于模型验证的Flory-Huggins chi参数而开发的.
主要成果:
- 该模型成功地预测了同和稀释相组合,结合分数和体积分数.
- 模型预测显示与实验协数据有很好的一致性.
- 与SDS-cat-HEC相比,使用cat-HEC的无硫酸盐表面活性剂 (陶酸盐和酸盐) 显示出明显更大的两相区域.
结论:
- 开发的分子热力学模型为了解和预测个人护理配方中的协提供了一个强大的框架.
- 这些发现突显了无硫酸盐表面活性剂的优越协潜力,为提高产品性能提供了机会.
- 这项工作指导了先进的个人护理产品的合理设计,提供了增强的交付和调节效益.
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