Phoshor-containing flame retardants on textiles: investigation of the structure-dependent mode of action in basic experiments

阻燃剂对聚合物和纺织品的作用模式和有效性的结构依赖模式仍然不清楚，因为阻燃是一个非常复杂的过程，通常是短暂发生的，并根据位置而变化，其中在凝聚相和气相中传输过程和化学过程是耦合的。为了更好地了解作用模式的基本原理，一方面，在一个合作项目中，通过系统地改变阻燃剂，研究了取代基对含磷阻燃剂在两种重要纺织纤维（棉花和PET）上的影响，另一方面，建立并使用了一个新的通用实验，可以用质谱方法对气相进行固定研究。在这里，通过定义明确和温度控制的气体混合物来开发纺织品的渗透性。结合对残留的研究以及已建立但不太详细的阻燃剂研究方法，预计将获得阻燃剂在两相中的作用模式的机理见解，以及对取代基对阻燃效果的影响的见解。

The structure-dependent mode of action and effectiveness of flame retardants on polymers and textiles is still unclear, since flame retardation is a very complex process that usually takes place transiently and varies depending on the location, in which transport processes and chemical processes are coupled in the condensed as well as in the gas phase. In order to better understand the fundamentals of the mode of action, on the one hand the influence of substituents on phosphorus-containing flame retardants on two important textile fibers (cotton and PET) is to be investigated in a cooperative project by systematically varying the flame retardants, and on the other hand a new generic experiment is to be set up and used that enables a stationary investigation of the gas phase with mass spectrometric methods. Here, the permeability of textiles by well-defined and temperature-controlled gas mixtures is exploited. In combination with the investigation of the residues as well as established - but less detailed - investigation methods of flame retardants, mechanistic insights into the mode of action of flame retardants in both phases are expected to be obtained, as well as insights into the influence of substituents on the effectiveness of flame retardancy.