光聚合紫外灯LUYOR-3405A 在光聚合复合材料中应用
摘要
2024 年，澳大利亚国立大学、中国科学院上海硅酸盐研究所等团队在《Advanced Materials》（IF=27.4，中科院一区 Top 期刊）发表研究，提到 LUYOR-3405A 灯是光聚合实验的核心工具，能高效驱动表面改性纳米填料与聚合物的原位聚合，为高性能聚合物纳米复合材料制备提供重要技术支持，还帮着弄清了填料表面改性和材料性能优化的关键机制。
澳大利亚国立大学联合研究团队长期研究光聚合技术、纳米材料表面改性和先进复合材料，聚焦绿色制造、材料性能提升等需求，在传感器、生物医用材料、3D 打印材料等领域有不少成果。光聚合反应快、条件温和，是做聚合物复合材料的好方法，但纳米填料在聚合物里不好分散、结合不够好一直是难题。这次研究通过改性纳米填料（比如氧化石墨烯、二氧化硅、生物基纳米材料），再用 光聚合紫外灯LUYOR-3405A灯精准发光激发，让填料和聚合物高效聚合，大幅提升了复合材料的机械、光学、电学性能，为批量生产高性能材料打下好基础。
实验中，光聚合紫外灯LUYOR-3405A全程发挥关键作用。制备硫醇改性氧化石墨烯时，它发出 365 nm 紫外线，驱动材料和聚乙二醇二丙烯酸酯聚合，做出的水凝胶吸附染料效果很好；给二氧化硅纳米粒子接枝光引发剂后，用它调控聚合过程，复合材料的弯曲模量从 43 MPa 涨到 286 MPa，光引发剂也不容易迁移；改性纤维素、壳聚糖等生物基材料时，它提供稳定紫外光，让材料和聚合物高效结合，做出的复合材料能用于 3D 打印、生物医疗；在钙钛矿、MOFs 等材料的聚合实验中，它能精准控制照射强度和时间，保证反应均匀高效，让复合材料在光电探测、气体分离等领域有用武之地。
光聚合紫外灯LUYOR-3405A是专门用于光聚合、转基因筛选的激发光源，优势很突出。365 nm 核心波长能激活各种光引发剂，适配不同类型聚合反应；发光稳定、功率足，大面积样品也能聚合均匀，实验结果更可靠；操作方便，能长时间连续工作，不管是小规模精准实验还是中批量样品制备都能用，大大提高实验效率；兼容性强，能匹配各类聚合体系和荧光检测场景，是材料科学、化学、生物等领域的常用工具，已经帮着发表了近千篇高水平论文。
原文相关段落：Graphene oxides (GOs) were chemically modified with thiols (GO-SH) and subsequently underwent photopolymerization with PEGDA using a LUYOR-3405 UV lamp emitting at 365 nm. The incorporation of increasing amounts of GO-SH resulted in the GO-SH/PEG composite hydrogels having larger pore volumes and average pore diameters compared to the unmodified PEG hydrogels. The efficiency of these composite hydrogels in adsorbing three organic dyes, Congo red (CR), Rhodamine B (RhB), and methylene blue (MB), was thoroughly assessed. Hydrogels with higher GO-SH concentrations exhibited superior dye adsorption capabilities.
Surface modification of nanofillers is a key strategy to promote favorable filler–polymer interactions and compatibilize the interface to enhance dispersion. Various surface modification techniques, such as grafting, silanization, and the attachment of functional groups, have been employed to tailor the surface properties of nanofillers and promote their integration into the polymer matrix during photopolymerization. The incorporation of surface-modified nanofillers into polymer composites via photopolymerization, driven by tools like LUYOR-3405 UV lamp, offers several advantages, including rapid and efficient processing, spatial and temporal control over the polymerization reaction, and the ability to create complex structures.
The presence of photoinitiators or photosensitizers on the surface of modified nanofillers allows them to participate directly in the photopolymerization process initiated by LUYOR-3405 UV lamp, leading to the formation of strong covalent bonds between the nanofillers and the polymer matrix. This enhanced interaction results in improved stress transfer, increased mechanical strength, and better overall performance of the nanocomposites.
DOI: 10.1002/adma.202400178
