Transmitting and scattering colors of porous particles of poly(vinyl chloride) based on Christiansen effect
Transmitting and scattering colors of porous particles of poly(vinyl chloride) based on Christiansen effect
复制标题
DOI：
10.1016/j.polymer.2018.06.003
复制
发表时间：
2018-07
期刊：
影响因子：
4.6
通讯作者：
Sadaki Samitsu;H. Miyazaki;H. Segawa
中科院分区：
文献类型：
--
作者：
Sadaki Samitsu;H. Miyazaki;H. Segawa
多孔聚氯乙烯（PVC）粒子浸泡在有机液体中表现出明亮的颜色时，液体的折射率（RI）接近PVC的RI。这些粒子可以将白色光分离成互补的透射色和散射色。与传统的光干涉产生的结构色不同，这些颜色独立于周期性微结构，通过改变液体的波长依赖性RI来系统地调谐，并覆盖了从320到780 nm的整个可见光范围。基于Mie散射理论的数值计算成功地再现了它们的透射光谱，验证了这些材料的Christiansen效应。由该效应确定的RI高于膜样品的RI和文献中的代表值。该研究揭示了聚合物的新的和未被发现的RI相关特征，并表明Christiansen效应将提供一种简单但有价值的方法来研究聚合物颗粒在液体中的分散状态。
Porous poly (vinyl chloride) (PVC) particles immersed in organic liquids exhibited bright colors when the refractive indices (RIs) of the liquids were close to the RI of PVC. The particles can separate white light into complementary transmitting and scattering colors. Unlike conventional structural colors resulting from interference of light, the colors, which are independent of the periodic microstructures, were systematically tuned by varying the wavelength-dependent RIs of liquids and covered the entire visible range from 320 to 780 nm. Numerical calculation based on the Mie scattering theory successfully reproduced their transmission spectra, validating the Christiansen effect of these materials. The RI determined by this effect was higher than that of the film sample and representative values in literature. The study reveals new and undiscovered RI-related features of polymers and demonstrates that the Christiansen effect will provide a simple but valuable method to study the dispersion state of polymer particles in liquids.