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>>>Magnetochromic Elastomer With Instant Color Changes: A Study of the Influence of Material Composition

中国科学院过程工程研究所离子液体清洁过程北京市重点实验室在专业学术期刊Macromolecular Materials And Engineering发表了题为Magnetochromic Elastomer With Instant Color Changes: A Study of the Influence of Material Composition的文章，研究磁性变色材料。科学家们报道了一种基于甘油填充硅胶的闭孔结构制备磁致变色材料的简单方法，通过将未固化的有机硅弹性体与液体（PEG200，或甘油）混合，磁性纳米颗粒MNP均匀分散在其中，获得磁致变色弹性体。研究人员研究了制备参数的影响，如MNPs的浓度、液体的类型和浓度，以及表面活性剂的使用，以制备具有优化组成和性能的磁致变色弹性体。

科研工作者借助BMG的 POLARstar Omega微孔板读板机来分析磁性纳米颗粒在液体悬浮液中的分散稳定性。通过紫外可见分光光度计检测吸光度，OD值代表分散度。动力学连续一小时全波长扫描紫外可见吸收光OD值，提取300nm和400nm的吸光度展示磁性纳米颗粒在液体中的分散度。BMG的紫外可见光度计采用静息光栅，通过CCD检测吸光度值，能做到全波长扫描速度小于1s/孔，并且还可以设置全波长扫描动力学检测，获取更多的信息，是研究各种材料的有力工具。

（原文：https://onlinelibrary.wiley.com/doi/full/10.1002/mame.202400034）

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