Abstract

A facile strategy for hydrophobic films based on oil-infused polystyrene microspheres with the unit of γ-methacryloxypropyltrimethoxysilane is demonstrated. Specifically, the rough polystyrene microspheres with unit of γ-methacryloxypropyltrimethoxysilane are synthesized by suspension polymerization. These hydrophobic films were used, for the first time, as rough substrates for loading low surface tension silicone oils as lubricating liquids for the fabrication of polystyrene films. The properties of the films can be well tuned by adjusting the toluene and γ-methacryloxypropyltrimethoxysilane balance of the polystyrene microspheres and the mass ratio of toluene to γ-methacryloxypropyltrimethoxysilane reached 7 : 1.5 was found to be the most effective. The hydrophobic films could easily repel water and the water contact angle of the film was 150° before infusing oil and reached 139° after infusing oil. The morphology, structure and composition of polystyrene microspheres were characterized by SEM and FTIR. The content of trapped lubricant was quantified by silicone oil decomposition and measured by thermogravimetric analysis. Bacterial attachment tests showed that silicone oil infusion inhibited the attachment and growth of E. coli. The resulting films maintain water repellency and slipperiness after freezing, water flowing, and friction.

中文翻译：

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疏水性聚苯乙烯微球薄膜的合成与表征

摘要

提出了一种基于油浸式聚苯乙烯微球的疏水膜的简便策略，该油微球以γ-甲基丙烯酰氧基丙基三甲氧基硅烷为单元。具体地，通过悬浮聚合合成具有γ-甲基丙烯酰氧基丙基三甲氧基硅烷单元的粗糙的聚苯乙烯微球。这些疏水性薄膜首次用作粗糙的基材，以装载低表面张力的硅油作为制造聚苯乙烯薄膜的润滑液。通过调节聚苯乙烯微球的甲苯和γ-甲基丙烯酰氧基丙基三甲氧基硅烷的平衡，可以很好地调节膜的性能，并且发现甲苯与γ-甲基丙烯酰氧基丙基三甲氧基硅烷的质量比达到7：1.5是最有效的。疏水膜易于排斥水，并且膜的水接触角在注入油之前为150°，而在注入油之后达到139°。用SEM和FTIR对聚苯乙烯微球的形貌，结构和组成进行了表征。通过硅油分解定量捕集的润滑剂的含量，并通过热重分析进行测量。细菌附着试验表明，硅油输注抑制了黏附和生长大肠杆菌。所得的膜在冷冻，水流动和摩擦后保持疏水性和滑爽性。