开发载入 TiO2 的亚甲基双苯并三唑四甲基丁基苯酚接枝木质素亚微球,用于防晒应用

IF 20.2 Q1 MATERIALS SCIENCE, PAPER & WOOD
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引用次数: 0

摘要

木质素是防晒剂行业中一种前景广阔的紫外线(UV)吸收剂。然而,由于木质素的防晒系数(SPF)较低,且在化妆品行业中颜色较深,含木质素防晒剂的商业开发面临着挑战。本研究对木质素的化学结构和物理结构进行了双重改造,以应对这些挑战。首先,通过原子转移自由基聚合反应将亚甲基双苯并三唑基四甲基丁基苯酚(MBBT)接枝到碱木素(AL)上,形成 AL 接枝-MBBT3(AL-g-MBBT3)聚合物。用 10% AL-g-MBBT3 制备的防晒霜具有出色的防晒性能,SPF 值为 42.93,颜色浅,色差值(ΔE)为 45.6,而用 10% AL 制备的防晒霜 SPF 值为 4.74,ΔE 值为 49.5。随后,AL-g-MBBT3 被转化为普通亚微米球体(AL-g-MBBT3 N)和负载 TiO2 的亚微米球体(AL-g-MBBT3/TiO2)。10% AL-g-MBBT3 N@C和AL-g-MBBT3/TiO2@C防晒霜的防晒性能明显优于AL-g-MBBT3@C防晒霜,SPF值分别达到60.38和66.20。此外,这些防晒霜的色泽也有很大改善,ΔE 值分别为 41.8 和 36.3。这些结果为探索木质素在防晒霜中的高价值应用提供了宝贵的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of Methylene Bis-Benzotriazolyl Tetramethylbutylphenol-grafted lignin sub-microspheres loaded with TiO2 for sunscreen applications
Lignin serves as a promising Ultraviolet (UV) absorber within sunscreen industry. However, the commercial development of lignin-containing sunscreens faces challenges due to their low sun protection factor (SPF) and dark color in cosmetics industry. In this study, dual modifications on the chemical and physical structures of lignin were conducted to address these challenges. Initially, methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT) was grafted onto alkali lignin (AL) through an atom transfer radical polymerization reaction, resulting in a polymer of AL-graft-MBBT3 (AL-g-MBBT3). The sunscreen prepared with 10% AL-g-MBBT3 displays outstanding sun protection performance with a SPF of 42.93 and a light color with a color difference value (ΔE) of 45.6, in contrast to 10% AL with a SPF of 4.74 and a ΔE value of 49.5. Subsequently, AL-g-MBBT3 was transformed into normal submicron spheres (AL-g-MBBT3 N) and TiO2-loading submicron spheres (AL-g-MBBT3/TiO2). The sun protection performances of 10% AL-g-MBBT3 N@C and AL-g-MBBT3/TiO2@C sunscreens obviously surpass that of AL-g-MBBT3@C sunscreen, achieving SPFs of 60.38 and 66.20, respectively. Additionally, there is a considerable improvement in the color of these sunscreens, with ΔE values of 41.8 and 36.3, respectively. These results provide valuable insights into exploring lignin's high-value applications in sunscreen.
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来源期刊
Journal of Bioresources and Bioproducts
Journal of Bioresources and Bioproducts Agricultural and Biological Sciences-Forestry
CiteScore
39.30
自引率
0.00%
发文量
38
审稿时长
12 weeks
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