Granular Nanostructure: A Facile Biomimetic Strategy for the Design of Supertough Polymeric Materials with High Ductility and Strength,Advanced Materials

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Granular Nanostructure: A Facile Biomimetic Strategy for the Design of Supertough Polymeric Materials with High Ductility and Strength
Advanced Materials ( IF 27.4 ) Pub Date : 2017-10-25 , DOI: 10.1002/adma.201704661
Pingan Song _{1,

2} , Zhiguang Xu ₃ , Matthew S. Dargusch _{4,

5} , Zhi‐Gang Chen _{2,

4} , Hao Wang ₂ , Qipeng Guo ₆

Affiliation

The realization of high strength, large ductility, and great toughness for polymeric materials is a vital factor for practical applications in industry. Unfortunately, until now this remains a huge challenge due to the common opposing trends that exist when promoting improvements in these properties using materials design strategies. In the natural world, the cuticle of mussel byssus exhibits a breaking strain as high as 100%, which is revealed to arise from an architectural granular microphase‐separated structure within the protein matrix. Herein, a facile biomimetic designed granular nanostructured polymer film is reported. Such biomimetic nanostructured polymer films show a world‐record toughness of 122 (± 6.1) J g⁻¹ as compared with other polyvinyl alcohol films, with a breaking strain as high as 205% and a high tensile strength of 91.2 MPa, which is much superior to those of most engineering plastics. This portfolio of outstanding properties can be attributed to the unique nanoscale granular phase‐separated structure of this material. These biomimetic designed polymer films are expected to find promising applications in tissue engineering and biomaterials fields, such as artificial skin and tendon, which opens up an innovative methodology for the design of robust polymer materials for a range of innovative future applications.

中文翻译：

颗粒纳米结构：一种具有高延展性和强度的超韧聚合物材料设计的仿生策略

对于聚合物材料而言，实现高强度，大延展性和高韧性是工业上实际应用的重要因素。不幸的是，由于使用材料设计策略促进这些特性的改进时，存在着共同的相反趋势，到目前为止，这仍然是一个巨大的挑战。在自然界中，贻贝的表皮表现出高达100％的断裂应变，该断裂应变是由蛋白质基质内的一种结构性颗粒微相分离结构引起的。在此，报道了一种容易仿生设计的颗粒状纳米结构聚合物膜。此类仿生纳米结构聚合物薄膜的世界纪录韧性为122（±6.1）J g ^-1与其他聚乙烯醇薄膜相比，具有高达205％的断裂应变和91.2 MPa的高拉伸强度，远远优于大多数工程塑料。这种出色的性能组合归因于该材料独特的纳米级颗粒相分离结构。这些仿生设计的聚合物薄膜有望在组织工程和生物材料领域（例如人造皮肤和肌腱）中找到有前途的应用，这为设计坚固的聚合物材料提供了一种创新的方法，可用于一系列创新的未来应用。

更新日期：2017-10-25

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