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Autonomic self-healing of poly(vinyl butyral)

机译:聚乙烯醇缩丁醛的自主自我修复

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The self-healing behavior of poly(vinyl butyral) (PVB) is evaluated below the glass transition temperature T-g. It is found that PVB shows autonomic self-healing even at room temperature, although T-g is around at 76 degrees C. Furthermore, a large amount of water is found to be adsorbed on the surface of the film. This is attributed to the surface localization of hydroxyl group in PVB, which is confirmed by X-ray photoelectron spectroscopy. Since the surface is plasticized by water, the scar applied by a razor blade is healed even in the glassy state of the bulk. Moreover, the healing efficiency is enhanced at high humidity condition, owing to the pronounced plasticizing effect by water. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42008.
机译:在玻璃化转变温度T-g以下评估聚乙烯醇缩丁醛(PVB)的自愈性能。发现尽管T-g在76℃左右,PVB甚至在室温下也显示出自主的自修复。此外,发现大量的水吸附在膜的表面上。这归因于PVB中羟基的表面定位,这通过X射线光电子能谱证实。由于表面是通过水塑化的,因此即使在大块的玻璃状状态下,剃须刀所施加的疤痕也可以得到修复。此外,由于水的显着增塑作用,在高湿度条件下,其愈合效率得到了提高。 (c)2015 Wiley Periodicals,Inc. J. Appl。 Polym。科学2015,132,42008。

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