Preparation of lignin nanospheres based superhydrophobic surfaces with good robustness and long UV resistance.
Preparation of lignin nanospheres based superhydrophobic surfaces with good robustness and long UV resistance.
复制标题
基于木质素纳米球的超疏水表面的制备，具有良好的鲁棒性和长的抗紫外线能力
作者：
木质素是制备功能材料的理想物质。具体而言，木质素纳米球（LNPs）是由木质素分子自组装而成，在药物递送、电化学、催化等方面显示出巨大的应用前景。目前，大多数超疏水表面主要由不可降解的无机颗粒构建，仍然受到环境性能差、易老化、机械强度低等缺陷的困扰。在这项研究中，含有LNPs，纤维素纳米晶体（CNC）和聚乙烯醇（PVA）的水溶液混合物喷涂到木材表面，然后用1H，1H，2 H，2 H-全氟辛基三氯硅烷（FOTS）改性，以获得超疏水表面。在超疏水表面中，LNPs代替无机粒子作为主要结构材料，CNC作为增强材料，PVA作为粘合剂。该超疏水表面的水接触角（WCA）为162°，具有较好的抗紫外强度，在1000 W的超高紫外光照射7 h后仍保持超疏水性，为木质素的高价值应用提供了更多的方向。木质素纳米球可以作为超疏水表面的主要结构材料，纤维素纳米晶可以作为超疏水表面的修饰剂，制备出具有良好的鲁棒性和长时间的抗紫外性能的超疏水表面。
Lignin is an ideal substance for preparation of functional materials. Specifically, lignin nanospheres (LNPs) are formed by self-assembly of lignin molecules and show great application prospects in drug delivery, electrochemistry, catalysis, etc. At present, most superhydrophobic surfaces are mainly built using non-degradable inorganic particles and are still beset by defects such as poor environmental performance, easy aging, and low mechanical strength. In this study, an aqueous mixture containing LNPs, cellulose nanocrystals (CNCs) and polyvinyl alcohol (PVA) was sprayed onto wood surfaces and then modified by 1H,1H,2H,2H-perfluorooctyltrichlorosilane (FOTS) to obtain a superhydrophobic surface. In the superhydrophobic surface, LNPs were used as the main structural materials instead of inorganic particles, CNC was used as a reinforcement material and PVA was used as an adhesive. The resulting superhydrophobic surface showed a water contact angle (WCA) of 162°, good robustness resistance and long UV resistance in which the superhydrophobicity was still retained after exposure to ultra-high UV light (power of 1000 W) for 7 h, providing more directions for high-value application of lignin. Lignin nanospheres could be taken main structural materials and cellulose nanocrystals as a reinforcer for preparation of superhydrophobic surfaces with good robustness and long UV resistance.
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影响因子：
15.1
作者：
Li, Da-Wei;Wang, Hui-Yuan;Zhao, Zheng-Xue
通讯作者：
Zhao, Zheng-Xue
乙腈提取木质素和纳米二氧化硅构建稳定的超疏水表面及其在油水分离中的应用
影响因子：
5.9
作者：
Gong, Xiaoyu;Meng, Yi;Wang, Haisong
通讯作者：
Wang, Haisong
影响因子：
2.3
作者：
Ma, Changpo;Li, Yongzan;Qiu, Zumin
通讯作者：
Qiu, Zumin
影响因子：
4.2
作者：
Mahmoud, Khaled A.;Zourob, Mohammed
通讯作者：
Zourob, Mohammed
DOI：
10.1007/s12613-020-2096-y
发表时间：
2021-06-01
影响因子：
4.8
作者：
Rahmah, Muntadher, I;Sabry, Raad S.;Aziz, Wisam J.
通讯作者：
Aziz, Wisam J.