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首页> 外文期刊>RSC Advances >Effect of crystallinity on the recovery rate of superhydrophobicity in plasma-nanostructured polymers
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Effect of crystallinity on the recovery rate of superhydrophobicity in plasma-nanostructured polymers

机译：结晶度对等离子体 - 纳米结构聚合物中超细纤维性回收率的影响

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This study explored the optimum conditions to achieve superhydrophobicity in polyethylene terephthalate (PET) in terms of crystallinity and microstructure. Surface superhydrophobicity was achieved by nanostructures induced by oxygen plasma etching and the recovery process of low surface energy through thermal aging of various PETs; semi-crystalline biaxial PET (B-PET) film, amorphous PET (A-PET) film, and semi-crystalline PET (F-PET) fabric. Under the anisotropic plasma etching, the nanostructures on the B-PET film were the longest, followed by the F-PET fabric, which developed a hierarchical micro/nanostructure, then the A-PET film. During thermal aging at 80 °C near T _(g) , the plasma-treated A-PET film recovered its superhydrophobicity within 3 h, while the plasma-treated B-PET film did not exhibit superhydrophobicity. At 130 °C, higher than T _(g) , the plasma-treated B-PET film recovered its superhydrophobicity within 1 h, but the plasma-treated A-PET film became opaque as its nanostructures deformed, decreasing its superhydrophobicity. The plasma-treated F-PET fabric exhibited faster recovery and greater superhydrophobicity than the plasma-treated B-PET film, due to its hierarchical micro/nanostructure. In addition, hydrophobic recovery during thermal aging was proved with a decrease in surface polar groups, lowering the surface energy using XPS analysis. Therefore, by designing the ratio of crystal to amorphous regions and surface micro/nanostructures, one can rapidly fabricate superhydrophobic PETs without additional surface finishing.
机译：本研究探讨了在结晶度和微观结构方面在聚对苯二甲酸乙二醇酯（PET）中实现过碘硼性的最佳条件。通过氧等离子体蚀刻诱导的纳米结构和通过各种宠物的热老化通过氧气等离子体蚀刻和低表面能的回收过程实现表面超疏水性;半结晶双轴PET（B-PET）薄膜，无定形PET（A-PET）膜和半结晶PET（F-PET）织物。在各向异性等离子体蚀刻下，B-PET膜上的纳米结构是最长的，其次是F-PET织物，其开发了分层微/纳米结构，然后是A-PET膜。在80℃的热老化期间，在T _（g）附近时，等离子体处理的A-PET膜在3小时内回收其超疏水性，而等离子体处理的B-PET膜没有表现出超细纤维性。在130℃下，高于T _（g），等离子体处理的B-PET膜在1小时内回收其超疏水性，但等离子体处理的A-PET膜随着其纳米结构变形而变形，降低其超疏水性。由于其等级微/纳米结构，等离子体处理的F-PET织物的恢复速度更快，超细纤维比等离子体处理的B PET膜更高。另外，在热老化期间的疏水恢复被证明是表面极性的减少，使用XPS分析降低表面能。因此，通过将晶体与无定形区和表面微/纳米结构的比率设计，可以快速制造过疏水宠物而不额外的表面精加工。

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