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首页> 外文期刊>RSC Advances >Ice-regenerated flame retardant and robust film of Bombyx mori silk fibroin and POSS nano-cages
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Ice-regenerated flame retardant and robust film of Bombyx mori silk fibroin and POSS nano-cages

机译：冰再生家蚕丝素蛋白和POSS纳米笼的阻燃且坚固的薄膜

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摘要

In this study, we present a simple method to prepare and control the structure of regenerated hybrid silkworm silk films through icing. A regenerated hybrid silk (RHS) film consisting of a micro-fibrillar structure was obtained by partially dissolving amino-functionalized polyhedral oligomeric silsesquioxanes (POSS) and silk fibers in a CaCl _(2) –formic acid solution. After immersion in water and icing, the obtained films of RHS showed polymorphic and strain-stiffening behaviors with mechanical properties that were better than those observed in dry or wet-regenerated silk. It was also found that POSS endowed the burning regenerated silk film with anti-dripping properties. The higher β-sheet content observed in the ice-regenerated hybrid micro-fibrils indicates a useful route to fabricate regenerated silk with physical and functional properties, i.e. strain-stiffening, similar to those observed to date in natural spider silk counterpart and synthetic rubbers, and anti-dripping of the flaming melt. Related carbon nanotube composites are considered for comparison.
机译：在这项研究中，我们提出了一种简单的方法，通过覆冰来制备和控制再生杂交蚕丝膜的结构。通过将氨基官能化的多面体低聚倍半硅氧烷（POSS）和丝纤维部分溶解在CaCl _（2）-甲酸溶液中，获得了由微纤丝结构组成的再生杂化丝（RHS）膜。浸入水中和结冰后，所获得的RHS膜表现出多态性和应变强化行为，其机械性能优于在干法或湿法再生丝中观察到的力学性能。还发现，POSS赋予燃烧的再生丝膜以防滴性能。在冰再生的杂化微纤维中观察到的较高的β-片层含量表明，该线是制备具有物理和功能特性（即应变变硬）的再生丝的有用途径，类似于迄今为止在天然蜘蛛丝对应物和合成橡胶中观察到的那些，并防止火焰状熔体滴落。考虑将相关的碳纳米管复合材料进行比较。

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