利用大桶光聚合技术实现热致伸缩形状记忆聚合物的快速 4D 打印

IF 8.6 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Npg Asia Materials Pub Date : 2023-12-15 DOI:10.1038/s41427-023-00511-x
Fahad Alam, Jabir Ubaid, Haider Butt, Nazek El-Atab
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引用次数: 0

摘要

形状记忆聚合物(SMPs)是一种智能材料,近年来因其在智能结构和设备中的广泛应用而备受关注。数字光处理(DLP)是一种基于大桶光聚合的技术,是一种可在一个步骤中打印完整层的快速技术。本研究报告了一种使用 DLP 3D 打印机和定制树脂轻松快速地 3D 打印基于 SMP 的智能结构的方法。液晶(LC,RM257)与树脂的结合引入了形状记忆特性。液晶与光固化树脂的结合为直接三维打印热致伸缩结构提供了机会,避免了 SMP 树脂制备的复杂性。打印出的结构具有不同的几何形状,并对形状记忆响应进行了测量。通过制造和编程晶格结构,获得了可调的机械性能。此外,还测量了应变传感响应,以证明这些晶格结构可用作关节运动传感的智能贴片。智能贴片的制备非常方便,可用于智能工具、玩具和超材料传感器等多种应用。
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Swift 4D printing of thermoresponsive shape-memory polymers using vat photopolymerization

Shape-memory polymers (SMPs) are smart materials that have gained significant attention in recent years owing to their widespread application in smart structures and devices. Digital light processing (DLP), a vat-photopolymerization-based technique, is a significantly faster technology for printing a complete layer in a single step. The current study reports a facile and fast method for the 3D printing of SMP-based smart structures using a DLP 3D printer and a customized resin. A liquid crystal (LC, RM257) was combined with the resin to introduce shape-memory properties. The combination of LCs in photocurable resin provides the opportunity to directly 3D-print thermoresponsive structures, avoiding the complexity of SMP resin preparation. The structures were printed with different geometries, and the shape-memory response was measured. Lattice structures were fabricated and programmed to obtain tunable mechanical properties. Furthermore, the strain-sensing response was measured to demonstrate the utility of these lattice structures as smart patches for joint-movement sensing. The SMPs can be prepared conveniently and can potentially be used for various applications, such as smart tools, toys, and meta-material sensors.

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来源期刊
Npg Asia Materials
Npg Asia Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
15.40
自引率
1.00%
发文量
87
审稿时长
2 months
期刊介绍: NPG Asia Materials is an open access, international journal that publishes peer-reviewed review and primary research articles in the field of materials sciences. The journal has a global outlook and reach, with a base in the Asia-Pacific region to reflect the significant and growing output of materials research from this area. The target audience for NPG Asia Materials is scientists and researchers involved in materials research, covering a wide range of disciplines including physical and chemical sciences, biotechnology, and nanotechnology. The journal particularly welcomes high-quality articles from rapidly advancing areas that bridge the gap between materials science and engineering, as well as the classical disciplines of physics, chemistry, and biology. NPG Asia Materials is abstracted/indexed in Journal Citation Reports/Science Edition Web of Knowledge, Google Scholar, Chemical Abstract Services, Scopus, Ulrichsweb (ProQuest), and Scirus.
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