Micromorphology Influence on the Color Performance of Lignin and Its Application in Guiding the Preparation of Light-colored Lignin Sunscreen,ACS Sustainable Chemistry & Engineering

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Micromorphology Influence on the Color Performance of Lignin and Its Application in Guiding the Preparation of Light-colored Lignin Sunscreen
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-08-01 00:00:00 , DOI: 10.1021/acssuschemeng.8b03464
Hui Zhang ₁ , Fangeng Chen ₁ , Xinxin Liu ₁ , Shiyu Fu ₁

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The lignin with different color degree was obtained by micromorphology regulation and was characterized by SEM, brightness test, bulk density, particle diameter, zeta potential, specific surface area, and visible light diffusion to investigate the relationship between micromorphology and color performance. The results show that the lignin that consists of fine particles and contains dense interval space between particles exhibits obvious advantages on color reduction which is highly lightened by more than 3 times compared with the untreated lignin. The loose structure of lignin leads to a low bulk density which by the way decreases the concentration of chromophores in the macroscopic scale. Rely on the new fundamental basis for the color reduction of lignin, a kind of light-colored lignin was obtained and was used as additive in the preparation of sunscreen. The lignin-based sunscreen reached SPF 50.69 under an addition amount of 5 wt %, and barely showed staining on skin.

中文翻译：

微观形态对木质素着色性能的影响及其在指导浅色木质素防晒霜制备中的应用

通过微观形貌调控获得了不同色度的木质素，并通过SEM，亮度测试，堆积密度，粒径，ζ电势，比表面积和可见光扩散进行了表征，以研究微观形貌与色彩表现之间的关系。结果表明，由细颗粒组成并且在颗粒之间具有密集间隔的木质素在减色方面显示出明显的优势，与未处理的木质素相比，其高度减轻了3倍以上。木质素的松散结构导致较低的堆积密度，这顺便降低了宏观范围内发色团的浓度。依靠减少木质素变色的新基础，获得了一种浅色木质素，并用作防晒剂的添加剂。基于木质素的防晒剂在5重量％的添加量下达到SPF 50.69，并且几乎没有在皮肤上显示出染色。

更新日期：2018-08-01

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