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首页> 外文期刊>Journal of Polymers and the Environment >Effect of Microstructure of High Density Polyethylene on Catalytic Degradation: A Comparison Between Nano Clay and FCC
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Effect of Microstructure of High Density Polyethylene on Catalytic Degradation: A Comparison Between Nano Clay and FCC

机译：高密度聚乙烯微观结构对催化降解的影响：纳米粘土与FCC的比较

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摘要

The effect of microstructure of high density polyethylene (HDPE) on catalytic degradation over fluid catalytic cracking (FCC) catalyst and Nano clay is investigated. An ethylene/1-hexene copolymer (HDPE) was fractionated based on 1-hexene content to different fractions using preparative temperature rising elution fractionation (P-TREF) method. The short chain branch (SCB) content of each fraction calculated based on H-1 NMR results. The homogenous SCB content fractions were subsequently analyzed using TGA and thermal degradation behavior of samples were compared with catalytic degradation. The results showed that FCC, in contrast to nano clay, is more sensitive to microstructure of HDPE during catalytic degradation. Therefore, linear chains can start degradation sooner on FCC than the branched chains. In comparison of nano clay and FCC it was found that the nano clay, reduces temperature at maximum degradation rate (T-max), but FCC reduces the T-5% and T-max significantly.
机译：研究了高密度聚乙烯（HDPE）的微观结构对催化裂化（FCC）催化剂和纳米粘土催化降解的影响。使用制备性升温洗脱分级分离（P-TREF）方法，基于1-己烯含量将乙烯/ 1-己烯共聚物（HDPE）分为不同的馏分。基于H-1 NMR结果计算的每个馏分的短链分支（SCB）含量。随后使用TGA分析均质的SCB含量分数，并将样品的热降解行为与催化降解进行比较。结果表明，与纳米粘土相反，FCC在催化降解过程中对HDPE的微观结构更为敏感。因此，线性链比分支链可以更快地在FCC上开始降解。比较纳米粘土和FCC，发现纳米粘土在最大降解速率（T-max）下降低了温度，但是FCC显着降低了T-5％和T-max。

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