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首页> 外文期刊>Journal of Applied Polymer Science >Estimation of the Biobased Carbon Content of Polypropylene Resin in Composites on the Basis of the Carbon 14 Concentration
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Estimation of the Biobased Carbon Content of Polypropylene Resin in Composites on the Basis of the Carbon 14 Concentration

机译：基于碳14浓度估算复合材料中聚丙烯树脂的生物基碳含量

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摘要

The aim of this study was to estimate a procedure for the biobased carbon content of polypropylene (PP) resin isolated from composites containing additives or fillers on the basis of the carbon 14 concentration ratio, as measured by accelerated mass spectrometry (AMS). To reliably estimate the biobased carbon content of plastics, additives and fillers in the composites had to be removed because they often contain significant amounts of biobased carbon. To obtain specimens with purity suitable for estimation, an isolation procedure for PP from the composites was devised. The dissolution of the composites in 1,2,3,4-tetrahydronaphthalene at 150℃, followed by immediate centrifugation of the hot solution, yielded PP as semicrystalline precipitates by allowing the hot solution to cool during centrifugation. The recovery of the resin through the scooping off of the precipitates was typically 90%. This simple procedure provided a suitable specimen for the estimation of biobased carbon content by AMS on the basis of ASTM D 6866.
机译：这项研究的目的是根据通过加速质谱分析（AMS）测得的碳14浓度比，估算从含有添加剂或填料的复合材料中分离出的聚丙烯（PP）树脂的生物基碳含量的方法。为了可靠地估算塑料的生物基碳含量，必须去除复合物中的添加剂和填料，因为它们通常含有大量的生物基碳。为了获得纯度适合估计的标本，设计了一种从复合物中分离PP的方法。将复合物在150℃下溶于1,2,3,4-四氢萘中，然后立即离心热溶液，通过在离心过程中冷却热溶液，将PP制成半结晶沉淀。通过the出沉淀物，树脂的回收率通常为90％。这种简单的程序为根据ASTM D 6866通过AMS估算生物基碳含量提供了一个合适的样本。

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