Surface modification of polycarbonate using the light-activated chlorine dioxide radical
Surface modification of polycarbonate using the light-activated chlorine dioxide radical
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DOI：
10.1016/j.apsusc.2020.147202
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发表时间：
2020-11-15
影响因子：
6.7
通讯作者：
Uyama, Hiroshi
中科院分区：
文献类型：
--
作者：
Jia, Yankun;Asahara, Haruyasu;Uyama, Hiroshi
聚碳酸酯（PC）因其优异的性能而成为传统工程材料的理想替代品，但其与非均质材料的润湿性和粘附性较差，限制了其应用。在这项研究中，二氧化氯自由基（ClO2）被用作一种有效的氧化剂，PC的光氧化在温和的条件下，而不是以前的物理处理方法，使用等离子体，激光，离子束，或UV臭氧。在氧化反应过程中，极性基团如羧基，醛，和羟基被添加到PC膜的表面，而不会造成表面损伤。此外，表面氧化后的PC膜的表面润湿性和金属附着力得到改善，而PC膜的透射率没有改变。氧化条件，即温度和时间，对PC膜的化学组成，润湿性和表面形貌的影响进行了研究。采用光活化ClO2氧化PC膜是一种有效、清洁、节能的处理方法，具有进一步改性和应用的潜力。
Owing to its excellent properties, polycarbonate (PC) is a suitable alternative for conventional engineering materials; however, its applications are limited by its poor wettability and adhesion with heterogeneous materials. In this study, chlorine dioxide radical (ClO2) was used as an efficient oxidizing agent for PC oxidation by photoirradiation under mild conditions, instead of the previous physical treatment methods that used plasma, laser, ion beams, or UV ozone. During the oxidation reaction, polar groups like carboxyl, aldehyde, and hydroxyl were added to the surface of the PC films without causing surface damage. Furthermore, the surface wettability and metal adhesion of the PC films were improved after surface oxidation without change in the transmittance of the PC films. The effects of the oxidation conditions, viz. temperature and time, on the chemical composition, wettability, and surface morphology of the PC films were also investigated. The oxidation of PC films using light-activated ClO2 is an effective, clean, energy-saving treatment with potential for further modifications and applications.