Nan Alexandrina, Filip Xenia, Liebscher Jürgen
National Institute for Research and Development of Isotopic and Molecular Technologies, Str. Donat 67-103, 400293 Cluj-Napoca, Romania.
Institute of Chemistry, Humboldt-University of Berlin, 12489 Berlin, Germany.
Molecules. 2024 Dec 20;29(24):6020. doi: 10.3390/molecules29246020.
The recently developed phenoplast-related polymer, poly(benzofuran--arylacetic acid), presents a versatile molecular structure containing lactone and carboxylic acid functionalities that offer significant flexibility in creating cured materials with tailored properties for diverse applications, wherein also the thermal conductivity is an important factor. This study analyses the possibility of forming amide moieties of poly(benzofuran--arylacetic acid) with diamines resulting in cross-linked products in order to control its thermal properties. The cross-linking process is achieved by utilizing three distinct diamines, 1,6-diaminohexane, -xylylenediamine, and 4,7,10-trioxa-1,13-tridecanediamine, each possessing different degrees of polarity, flexibility, and reactivity. The resulting cross-linked zwitterionic poly(benzofuran--arylacetic acids) were structurally and morphologically characterized. By means of measuring the thermal conductivity and diffusivity of the materials, the possibility of adjusting the thermal properties of the cross-linked products by choosing appropriate linkers was determined. A case was developed where the thermal conductivity and diffusivity increased with temperature, a hardly found property in the cross-linking of polymers being important for many practical applications.
最近开发的与苯并呋喃相关的聚合物聚（苯并呋喃-芳基乙酸）具有一种通用的分子结构，包含内酯和羧酸官能团，这为制备具有定制性能的固化材料以用于各种应用提供了显著的灵活性，其中热导率也是一个重要因素。本研究分析了聚（苯并呋喃-芳基乙酸）与二胺形成酰胺基团从而产生交联产物以控制其热性能的可能性。交联过程通过使用三种不同的二胺来实现，即1,6-己二胺、对苯二甲撑二胺和4,7,10-三氧杂-1,13-十三烷二胺，它们各自具有不同程度的极性、柔韧性和反应活性。对所得的交联两性离子聚（苯并呋喃-芳基乙酸）进行了结构和形态表征。通过测量材料的热导率和扩散率，确定了通过选择合适的连接剂来调节交联产物热性能的可能性。研究发现了一种情况，即热导率和扩散率随温度升高，这在聚合物交联中是一种罕见的特性，对许多实际应用具有重要意义。
