A series of different layers ultrathin antioxidant intercalated layered double hydroxides (L-LDHs, = 1 to 10) were fabricated in a simple separate nucleation and aging steps route, and the anti-aging performance of L-LDH/polypropylene (PP) composites was carefully investigated. With the increase of Mgconcentration from 0.01 mol/L to 0.3 mol/L, the corresponding thickness of L-LDHs was varied from 2.58 nm to 26.7 nm related to the layer number from = 1 to = 10, and the radical-scavenging activity of L-LDHs was reduced from 51.5 % to 30.2 %. The ultrathin L-LDHs antioxidants were well dispersed in PP to produce L-LDH/PP composites with a mass loading of 0.4 wt% via a solvent mixing method. The L-LDHs antioxidants as a multifunctional agent influence crystallization behavior of PP, and enhance anti-aging performance of L-LDHs/PP composites. 3L-LDH exhibited the best anti-aging performance and appreciate anti-migration resistance for L-LDHs/PP composites, which is better than commercial Irganox 1010.

中文翻译：

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用于聚丙烯复合材料的超薄抗氧化剂插层层状双氢氧化物：与厚度相关的制造和抗老化性能


通过简单的单独成核和老化步骤路线制备了一系列不同层数的超薄抗氧化剂插层双氢氧化物（L-LDHs，= 1 至 10），并研究了 L-LDH/聚丙烯（PP）复合材料的抗老化性能。仔细调查。随着Mg浓度从0.01 mol/L增加到0.3 mol/L，L-LDH的相应厚度从2.58 nm变化到26.7 nm，层数从= 1到= 10，并且自由基清除活性L-LDH 从 51.5% 减少到 30.2%。将超薄L-LDHs抗氧化剂良好分散在PP中，通过溶剂混合方法制备质量负载量为0.4wt%的L-LDH/PP复合材料。 L-LDHs抗氧化剂作为多功能剂影响PP的结晶行为，增强L-LDHs/PP复合材料的抗老化性能。 3L-LDH在L-LDHs/PP复合材料中表现出最好的抗老化性能和抗迁移性能，优于商用Irganox 1010。