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首页> 外文期刊>Journal of Applied Polymer Science >Optimization of Experimental Parametes for the Quantification of Polymer Additives Using SFE/HPLC
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Optimization of Experimental Parametes for the Quantification of Polymer Additives Using SFE/HPLC

机译：使用SFE / HPLC进行聚合物添加剂定量的实验参数的优化

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摘要

Analysis of low concentration additives; for example, antioxidants, in polymeric materials remains adifficult task. In the usual analytical methods, additives are extracted using large quantities of solvents first followed by concentrating teh resulting solution for making possible the analysis. The supercritical fluid extraction (SFE) technique eliminates the use of large quantities of solvents and simplifles the analytical procedure. This work has been done with the goal of extracting the antioxidants Irganox 1010 and Irgafos 168 from a polypropylene matrix bu using the SFE technique and by subsequent analysis using hgih-performance liquid chromatography (HPLC). The experimental parameters; that is, temperatures, pressure, and modifiers have been varied to find the best extraction conditions. The optimum temperature and pressure for extraction of above-memtioned polymer additives were found to be 120deg C and 384 bar, with methanol as the modifier. The quantitative extractions are significantly faster than those reported earlier in the literature. The results point out that the techniqkue used in these experiments-SFE combined with HPLC-is a reliable and environmentally friendly alternative to the commonly used liquid extraction and analytical methods.
机译：分析低浓度添加剂;例如，聚合物材料中的抗氧化剂仍然是一项艰巨的任务。在通常的分析方法中，首先使用大量溶剂提取添加剂，然后浓缩所得溶液以使分析成为可能。超临界流体萃取（SFE）技术消除了对大量溶剂的使用，简化了分析程序。这项工作的目标是使用SFE技术从聚丙烯基质中提取抗氧化剂Irganox 1010和Irgafos 168，然后使用高效液相色谱（HPLC）进行后续分析。实验参数也就是说，为了找到最佳的萃取条件，需要改变温度，压力和改性剂。发现提取以上提到的聚合物添加剂的最佳温度和压力为120℃和384 bar，甲醇为改性剂。定量提取明显快于先前文献中报道的提取。结果指出，这些实验中使用的技术-SFE与HPLC相结合-是一种可靠且对环境友好的替代方法，可替代常用的液体提取和分析方法。

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