Aliphatic amido amine crosslinkers have been commercially used in epoxy coatings to enhance water barrier properties for corrosion prevention. However, there is only an empirical understanding of how these aliphatic polyamine crosslinkers affect properties of thermoset polymers, which limits our ability to design newer and more environmentally friendly coating systems. In this work, a series of model aliphatic amido amine curing agents are synthesized and used to create model epoxy/amine networks found in commercial coating formulations. These model systems are interrogated to understand the effects of pendant alkyl chain length material properties including modulus, glass transition temperature, solubility, diffusivity, and permeability of water. This work shows that increasing the pendant aliphatic chain reduces the solubility of water while simultaneously increasing the diffusivity to water in the polymer network.

脂族酰胺胺交联剂已在商业上用于环氧涂料中，以增强防水性能以防腐蚀。但是，对于这些脂肪族多胺交联剂如何影响热固性聚合物的性质，只有经验性的理解，这限制了我们设计更新和更环保的涂料体系的能力。在这项工作中，合成了一系列模型脂族酰胺胺固化剂，并用于创建在商业涂料配方中发现的模型环氧/胺网络。对这些模型系统进行了询问，以了解烷基链长材料特性的影响，包括模量，玻璃化转变温度，溶解度，扩散性和水的渗透性。