Abstract：
The literature on polyvinyl alcohol (PVA) films is extensive, however, these methods often necessitate intricate synthesis processes or the addition of plasticizers to modify the strength and water solubility of the PVA material. A high-strength UV radiation-resistant composite film by chelating Fe3+ with lignin and PVA, which exhibits excellent hydrolysis resistance is developed. This composite film is prepared simply by incorporating a small amount of dealkalized lignin (APPL) and ferric chloride (FeCl3) into PVA through a straightforward composite process. During the scanning test, it is noted that the film exhibits a high density of uniformly dispersed particles, endowing it with efficient ultraviolet absorption capabilities. The infrared and anti-dissolution tests reveal that the coordination of Fe3+ with lignin imparts an outstanding hydrolysis resistance to the film, obviating the need for any extender, curing agent, acid or base. The tensile fracture strength reaches an impressive 187.81Mpa in the tensile test. UV and indicator card tests unequivocally demonstrate that the film achieves a remarkable 100% anti-UV efficiency. This Fe3+ chelated lignin/PVA composite film, with its facile preparation, environmental sustainability, high strength, and outstanding anti-ultraviolet efficiency, can be deployed across diverse applications requiring robust protection against ultraviolet radiation.
摘要：
关于聚乙烯醇(PVA)薄膜的文献是广泛的,然而,这些方法通常需要复杂的合成过程或添加增塑剂来改变PVA材料的强度和水溶性。通过将Fe3与木质素和PVA螯合在一起，制备了一种高强度抗紫外线辐射复合膜，开发了表现出优异的耐水解性。通过简单的复合工艺将少量脱碱木质素（APPL）和氯化铁（FeCl3）掺入PVA中，即可制备该复合膜。在扫描测试期间，值得注意的是，该膜表现出高密度的均匀分散的颗粒，赋予它有效的紫外线吸收能力。红外和抗溶解测试表明，Fe3+与木质素的配位使薄膜具有优异的耐水解性。消除了对任何扩展器的需要，固化剂,酸或碱。在拉伸试验中拉伸断裂强度达到了令人印象深刻的187.81Mpa。UV和指示卡测试明确地表明,该膜实现了显著的100%抗UV效率。此Fe3+螯合木质素/PVA复合膜，由于其容易的准备，环境可持续性,高强度,和出色的抗紫外线效率，可以部署在不同的应用需要强大的防紫外线辐射。
