Reversible Photocuring of Liquid Hexa-Anthracene Compounds for Adhesive Applications
Reversible Photocuring of Liquid Hexa-Anthracene Compounds for Adhesive Applications
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DOI：
10.1080/00218464.2017.1383244
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发表时间：
2018-01-01
影响因子：
2.2
通讯作者：
Kihara, Hideyuki
中科院分区：
文献类型：
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作者：
Akiyama, Haruhisa;Okuyama, Yoko;Kihara, Hideyuki
使用无色粘合剂证明了玻璃板的可再加工粘合。这是使用蒽封端的液体化合物与六聚体结构（2500克摩尔（-1））作为粘合剂，这是光交联和热降解材料。研究发现，蒽上的取代位置对室温下得到液相化合物是重要的。然而，虽然这些化合物是液体，但它们太粘稠而不能用作粘合剂。因此，将它们与25 wt.%以增加流动性。然后可以将液体混合物施加到玻璃基材上而无需进一步改性，并且通过蒽部分的光二聚作用可固化以将玻璃基材紧密地附接在一起。固化的材料在高达120摄氏度下是稳定的，但在180摄氏度下加热后，它在室温下恢复到原始的液体状态，导致基板在不施加任何强力的情况下分离。固化和固化过程的循环可重复至少连续五次。
Reworkable adhesion of glass plates was demonstrated using colourless adhesives. This was achieved using anthracene-terminated liquid compounds with hexamer structures (2500g mol(-1)) as adhesives, which are photo-crosslinkable and thermo-degradable materials. It was found that the substitution position at the anthracene was important to obtain liquid-phase compounds at room temperature. However, although the compounds were liquid, they were too viscous to be used as adhesive. Therefore, they were mixed with 25wt.% of dibutyl phthalate to increase fluidity. The liquid mixture could then be applied to the glass substrates without further modification, and was curable via photodimerisation of anthracene moieties to tightly attach the glass substrates together. The cured material was stable up to 120 degrees C, but it returned to the original liquid state at room temperature after heating at 180 degrees C, resulting in the detachment of the substrates without applying any strong force. The cycles of the curing and liquefying processes was reproducible for at least five consecutive times.