载氧化铁/木薯淀粉的齐格勒-纳塔催化剂用于原位乙烯聚合。
Iron oxide/cassava starch-supported Ziegler-Natta catalysts for in situ ethylene polymerization.
机构信息
NANOCAST Laboratory, Center for Catalysis, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, 272 Rama VI Rd., Thung Phaya Thai, Ratchathewi, Bangkok 10400, Thailand.
NANOCAST Laboratory, Center for Catalysis, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, 272 Rama VI Rd., Thung Phaya Thai, Ratchathewi, Bangkok 10400, Thailand.
出版信息
Carbohydr Polym. 2015 Mar 6;117:319-323. doi: 10.1016/j.carbpol.2014.09.080. Epub 2014 Oct 7.
Iron oxide nanoparticles were used as supporters for in situ polymerization to produce polymer nanocomposites with well-dispersed fillers in polymer matrix. Iron oxide could be sustained as colloidal solutions by cassava starch to produce a good dispersion of iron oxide in the matrix. New supports based on iron oxide/cassava starch or cassava starch for Ziegler-Natta catalysts were utilized as heterogeneous supporters for partially hydrolyzed triethylaluminum. Then, TiCl4 was immobilized on the supports as catalysts for polymerization of ethylene. High-density polyethylene (HDPE) composites were obtained by the synthesized catalysts. A good dispersion of iron oxide/cassava starch particles was observed in the synthesized polymer matrix promoting to good mechanical properties of HDPE.
氧化铁纳米粒子被用作原位聚合的载体，以生产在聚合物基质中具有良好分散填料的聚合物纳米复合材料。通过木薯淀粉将氧化铁维持为胶体溶液，从而在基质中产生氧化铁的良好分散。基于氧化铁/木薯淀粉或木薯淀粉的新型载体被用作部分水解三乙基铝的非均相载体，然后将 TiCl4 固定在载体上作为聚合乙烯的催化剂。通过合成的催化剂获得高密度聚乙烯（HDPE）复合材料。在合成的聚合物基质中观察到氧化铁/木薯淀粉颗粒的良好分散，这促进了 HDPE 的良好机械性能。
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