Colored Poly(vinyl chloride) by Femtosecond Laser Machining,Industrial & Engineering Chemistry Research

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Colored Poly(vinyl chloride) by Femtosecond Laser Machining
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-24 , DOI: 10.1021/acs.iecr.8b00125
K. M. Tanvir Ahmmed ₁ , Roozbeh Mafi ₂ , Anne-Marie Kietzig ₁

Affiliation

Colored poly(vinyl chloride) (PVC) was fabricated by femtosecond laser micromachining without the addition of chemical colorants, eliminating the concern of leaching dyes and pigments. We determined that the changes in surface chemistry and surface topography both contribute to the observed yellow, brown, and black color formation. X-ray photoelectron spectroscopy (XPS) on the machined samples showed that conjugated double bonds are liable for the yellow and brown colors, whereas the presence of oxidized carbon and surface topography contribute to the black color. Fourier transform infrared spectroscopy (FTIR) indicated that laser irradiation altered the material’s properties only near the surface, which left the bulk properties unaltered. Furthermore, chemical resistance tests showed that some of the samples were able to withstand the influence of aggressive chemicals and their color did not fade. Finally, we showed that the fabrication of colored PVC highly depends on its ablation energy threshold which is affected by the laser pulse duration and wavelength.

中文翻译：

飞秒激光加工的彩色聚氯乙烯

通过飞秒激光微加工制造了有色聚氯乙烯（PVC），而无需添加化学着色剂，从而消除了浸出染料和颜料的麻烦。我们确定表面化学和表面形貌的变化均有助于观察到的黄色，棕色和黑色的形成。机加工样品上的X射线光电子能谱（XPS）表明，共轭双键对黄色和棕色负有责任，而氧化碳的存在和表面形貌则对黑色有利。傅里叶变换红外光谱（FTIR）表明，激光辐照仅在表面附近改变了材料的性能，从而使整体性能保持不变。此外，耐化学性测试表明，一些样品能够承受腐蚀性化学物质的影响，并且其颜色不会褪色。最后，我们表明，彩色PVC的制造很大程度上取决于其消融能量阈值，该阈值受激光脉冲持续时间和波长的影响。

更新日期：2018-04-25

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