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首页> 外文期刊>Journal of Applied Polymer Science >Confinement effects at nanoscale in natural rubber composites: Influence on macroscopic properties
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Confinement effects at nanoscale in natural rubber composites: Influence on macroscopic properties

机译：天然橡胶复合材料中纳米级的限制效应：对宏观性质的影响

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The study of molecular level interactions in elastomer composites has got very scant attention even though a large number of studies are going on in this topic. This work embodies the understanding of confinement effects in natural rubber (NR)/ ZnO composites from micro to nano length scales, and their influence on macroscopic properties of the composites. The interactions between fillers and matrix are characterized from the Donth's approach, which allows estimating the cooperativity size N(alpha)at the glass transition, N(alpha)being directly related to the filler-matrix interactions. The improved properties of NR-nano ZnO composites can be attributed to microstructural and morphological changes due to nano ZnO in the NR matrix. A correlation between N-alpha, the constrained volume C(v)and the thickness of immobilized polymer chains chi(m)at the glass transition has also been established. Thus, this work proves that the Donth's approach is a powerful probe to estimate the enhance of mechanical properties in nanocomposites from calorimetric investigations.
机译：弹性体复合材料中分子水平相互作用的研究虽然在这方面进行了大量的研究，但却很少受到关注。这项工作体现了对天然橡胶（NR）/ZnO复合材料中从微米到纳米尺度的约束效应的理解，以及它们对复合材料宏观性能的影响。填料和基质之间的相互作用由Donth方法描述，该方法允许估算玻璃化转变时的协同度大小N（α），N（α）与填料-基质相互作用直接相关。NR纳米ZnO复合材料性能的改善可归因于NR基体中纳米ZnO引起的微观结构和形态变化。还建立了玻璃化转变时N-α、约束体积C（v）和固定化聚合物链厚度chi（m）之间的关系。因此，这项工作证明了Donth的方法是一种强大的探针，可以从量热研究中评估纳米复合材料力学性能的提高。

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