Polacco Giovanni, Stastna Jiri, Biondi Dario, Antonelli Federico, Vlachovicova Zora, Zanzotto Ludovit
Dipartimento di Ingegneria Chimica, Università di Pisa, Via Diotisalvi 2, 56126 Pisa, Italy.
J Colloid Interface Sci. 2004 Dec 15;280(2):366-73. doi: 10.1016/j.jcis.2004.08.043.
Asphalt is known to be a colloidal suspension in which asphaltenes are covered by a stabilizing phase of polar resins and form complex micelles that are dispersed in the oily maltenic phase. In order to enhance its mechanical properties (e.g., in road paving), asphalts are often loaded with polymeric materials, thereby obtaining blends that can have different physical or chemical structures, depending on the composition of the added polymer. Asphalts modified by the addition of reactive ethylene terpolymers were prepared and their dielectric and rheological properties were measured both before and after a cure at high temperature. Even if it is not possible to determine the exact nature of the chemical interactions between asphalt and polymer, master curves obtained from dynamic data clearly show that during the cure the material tends to the behavior of a cross-linked network.
众所周知，沥青是一种胶体悬浮液，其中沥青质被极性树脂的稳定相覆盖，并形成分散在油性软沥青相中的复合胶束。为了提高其机械性能（例如在道路铺设中），沥青通常会加入聚合物材料，从而获得取决于添加聚合物组成的具有不同物理或化学结构的共混物。制备了添加反应性乙烯三元共聚物改性的沥青，并在高温固化前后测量了它们的介电和流变性能。即使无法确定沥青与聚合物之间化学相互作用的确切性质，但从动态数据获得的主曲线清楚地表明，在固化过程中材料倾向于呈现交联网络的行为。
