Design and properties of co-continuous nanostructured polymers by reactive blending
Design and properties of co-continuous nanostructured polymers by reactive blending
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DOI：
10.1038/nmat711
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发表时间：
2002-09-01
期刊：
影响因子：
41.2
通讯作者：
Leibler, L
中科院分区：
文献类型：
--
作者：
Pernot, H;Baumert, M;Leibler, L
塑料的年产量高达数亿吨，主导塑料市场的为数不多的商品聚合物无法满足所有的应用和预期。在这种背景下，在亚微米尺度上制造热力学稳定的聚合物共混物带来了很大的希望，但也带来了重大的科学和工业挑战。在这里，我们提出并证明了一种工业上相关的体系，即聚乙烯和聚酰胺，通过反应性共混，可以在广泛的组成范围内产生迄今无法获得的共连续形态。矛盾的是，由于生产方法中固有的分子多分散性，自组装结构在热力学上是稳定的。这些纳米结构材料提供了经典共混物无法实现的独特性能组合。这种通用、低成本、简单的策略应该得到广泛的应用。
With an annual production of hundreds of millions of tons, the few commodity polymers that dominate the plastics market cannot satisfy all the applications and expectations. In this context, the fabrication of thermodynamically stable polymer blends structured on submicrometre scales raises much hope, but poses significant scientific and industrial challenges. Here, we propose and demonstrate for an industrially relevant system, polyethylene and polyamide, that hitherto inaccessible co-continuous morphologies can be produced over a wide range of compositions by reactive blending. Paradoxically, the self-assembled structures are thermodynamically stable because of the molecular polydispersity inherent in the production method. These nanostructured materials present a unique combination of properties impossible to achieve with classical blends. This versatile, low-cost and simple strategy should be widely applicable.