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用于低VOC涂料的pH响应树脂的映射结构和病理学

Kush J Patel¹, Steven Bowles², L Elise Matolyak²

¹Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States.

ACS applied materials & interfaces

|December 11, 2024

概括

这项研究探讨了用于环保涂料的刺激反应性聚合物乳颗粒. 调整pH值显著改变树脂粘度比有机溶剂,为涂料行业提供可持续的解决方案.

科学领域:

聚合物科学和材料化学
可持续的涂料技术可持续的涂料技术
风病学和粒子工程学.

背景情况:

由于环境原因,油漆和涂料行业正在远离挥发性有机化合物 (VOC).
响应刺激的聚合物乳颗粒提供了一种减少VOC的方法,同时保持性能.
了解粒子微观结构是控制宏观性质的关键.

研究的目的:

为了研究颗粒微观结构和刺激响应的聚合物乳颗粒的rheological特性之间的关系.
为了评估pH值和有机溶剂对悬浮体质学的影响.
将这种新树脂结构的响应性与现有的pH响应性乳颗粒进行比较.

主要方法:

微角中子散射 (SANS) 用于确定粒子微观结构.
动态光散射 (DLS) 用于分析粒子大小和行为.
风湿学测量以评估在不同条件下的粘度变化.

主要成果:

粒子具有交叉连接的核心,延长的聚合物尾巴含有碳酸基.
增加pH值导致脱质和聚合物链延伸,增加水力动力阻力和粘度.
调整pH值对粘度的影响比添加有机溶剂对粘度的影响更大.
研究的树脂结构表明,pH响应组的每mol反应率更高.

结论:

工程粒子架构通过pH诱导的变化有效地控制了类风学.
这种方法为传统的VOC-heavy配方提供了更可持续和响应更快的替代方案.
这些发现为设计先进的环保涂料提供了宝贵的见解.

关键词:

涂料,涂料上的涂料.合物合物合物类风病学类风病学类风病学微角散射是一种小角度的散射.对刺激有反应的材料.挥发性有机化合物挥发性有机化合物

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