4D Printing of Ionic Liquid-Based Acrylate-Spin Crossover Composite Resins

IF 5.2 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2026-10-09 Epub Date: 2026-09-25 DOI:10.1021/acsapm.6c02456

Michel Habib, Alejandro Enriquez-Cabrera, Rafał Bielas, Nagham Mawassy, Jean François Meunier, Lionel Salmon, Azzedine Bousseksou

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引用次数: 0

Abstract

Significant advances have been made in recent years in the development of liquid resins for lithography-based 3D printing. Nevertheless, the incorporation of filler materials, including active and inactive nanoparticles, remains a major challenge due to issues related to resin stability, particle dispersion, and printability. Herein, we demonstrate the key role of ionic liquids in stabilizing and homogenizing spin-crossover (SCO) particle-filled composite resins and investigate how resin composition affects both the spin-crossover behavior and the mechanical properties of 4D-printed structures fabricated by 405 nm digital light processing (DLP). While the selected ionic liquid does not alter the intrinsic spin-crossover properties of the particles, the composition of the base resin, comprising phenylbis(2,4,6-trimethylbenzoyl) phosphine oxide (BAPO) as photoinitiator, neopentyl glycol diacrylate (NPGDA) as cross-linker, and varying ratios of hydroxyethyl methacrylate (HEMA) and hydroxyethyl acrylate (HEA), significantly influences the particles’ physicochemical environment and provides an effective means to tune the mechanical performance of the printed architectures. These results highlight the potential of ionic liquid-based SCO composite resins as promising platforms for the fabrication of responsive 4D-printed devices.

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离子液体基丙烯酸酯-自旋交叉复合树脂的4D打印

近年来，用于光刻3D打印的液体树脂的开发取得了重大进展。然而，由于树脂稳定性、颗粒分散性和可印刷性等问题，填充材料（包括活性和非活性颗粒）的掺入仍然是一个主要挑战。在此，我们证明了离子液体在稳定和均匀化自旋交叉（SCO）颗粒填充复合树脂中的关键作用，并研究了树脂成分如何影响405nm数字光处理（DLP）制造的4d打印结构的自旋交叉行为和力学性能。虽然所选择的离子液体不会改变颗粒固有的自旋交叉性质，但基础树脂的组成，包括苯基双（2,4,6-三甲基苯甲酰）氧化膦（BAPO）作为光引发剂，新戊二醇二丙烯酸酯（NPGDA）作为交联剂，以及不同比例的甲基丙烯酸羟乙酯（HEMA）和丙烯酸羟乙酯（HEA），显著影响颗粒的物理化学环境，并提供了一种有效的方法来调整印刷结构的机械性能。这些结果突出了离子液体基SCO复合材料作为制造响应式3d打印器件的有前途的平台的潜力。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.