Investigation of the thermochromic behaviour of coloured polymer-commpounds

热致变色性作为聚合物基材料颜色的可逆温度依赖关系还没有得到深入的研究。到目前为止，人们还不清楚温度变化如何影响复杂聚合物体系中的颜色变化。颜色成为塑料加工中的一项重要质量标准。为了通过节省时间的测量技术减少粉尘材料的数量，在生产线附近采用了颜色测量系统。因此，在高温下评估颜色是处理整个生产链中的热致变色现象的一个巨大挑战。为了确定聚合物化合物中的热诱导颜色转变，必须对常用的聚合物化合物的分子和结构性质以及不同组分之间的分子相互作用进行广泛的研究。描述聚合物化合物热诱导颜色转变的模型需要开发和验证，以提高基于可见光光谱测量技术的颜色特征的可预测性和评估。

The thermochromism as a reversible temperature dependency of the color of polymer-based materials has not been researched in depth, yet. By now, it is not understood in detail how temperature variation affects color changes in complex polymer systems. Color became an important quality criterion in plastics processing. With the aim to decrease the amount of speck-off materials by time-saving measurement techniques color measurement systems are adapted close to the production line. Thus, evaluation of color at elevated temperatures is a great challenge dealing with thermochromic phenomena attending the entire production chain. For determining thermally-induced color transitions in polymer-compounds extensive studies of commonly used polymer-compounds regarding to molecular and structural properties and molecular interaction between different components must be carried out. Models describing thermally-induced color transitions of polymer-compounds need to be developed and validated in order to improve predictability and evaluation of color characteristics based on VIS- spectroscopic measurement techniques.