Glycerol-based sustainably sourced resin for volumetric printing.

Glycerol-based sustainably sourced resin for volumetric printing.
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用于体积印刷的基于甘油的可持续来源树脂。

DOI：
10.1039/d3gc03607c
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发表时间：
2024
期刊：
GC
影响因子：
--
通讯作者：
Krumins E
Krumins E
中科院分区：
--
文献类型：
--
作者：
Krumins E

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体积增材制造 (VAM) 代表了增材制造领域的革命性进步，因为它允许通过单一的、有凝聚力的过程而不是逐层的方法来创建对象。这种创新技术提供了无与伦比的设计自由度并显着缩短了打印时间。 VAM 目前的一个限制是具有所需光反应化学性质且来自可持续来源的合适树脂的可用性。为了支持这项技术的应用，我们开发了一种基于聚甘油的可持续树脂，聚甘油是一种由甘油生产的生物衍生（例如植物来源）、无色且易于官能化的低聚物。为了将聚甘油-6 转化为丙烯酸酯可照片打印树脂，我们采用了一种简单、一步且可扩展的合成路线。聚甘油-6-丙烯酸酯满足体积打印的所有必要标准（透明度、光反应性、粘度），并成功用于打印各种具有复杂几何形状和良好分辨率的模型。研究发现废树脂可重复使用，性能问题最小化，提高了树脂利用率并最大限度地减少了浪费。此外，通过掺入聚己二酸甘油酯 (PGA-A) 和 10,12-二十二碳二烯酸 (PCDA) 等掺杂剂，我们展示了打印具有多种功能的物体的能力，包括温度传感探针和聚酯赋形剂，凸显了这些新型树脂的潜在应用。
Volumetric Additive Manufacturing (VAM) represents a revolutionary advancement in the field of Additive Manufacturing, as it allows for the creation of objects in a single, cohesive process, rather than in a layer-by-layer approach. This innovative technique offers unparalleled design freedom and significantly reduces printing times. A current limitation of VAM is the availability of suitable resins with the required photoreactive chemistry and from sustainable sources. To support the application of this technology, we have developed a sustainable resin based on polyglycerol, a bioderived (e.g., vegetable origin), colourless, and easily functionisable oligomer produced from glycerol. To transform polyglycerol-6 into an acrylate photo-printable resin we adopted a simple, one-step, and scalable synthesis route. Polyglycerol-6-acrylate fulfils all the necessary criteria for volumetric printing (transparency, photo-reactivity, viscosity) and was successfully used to print a variety of models with intricate geometries and good resolution. The waste resin was found to be reusable with minimal performance issues, improving resin utilisation and minimising waste material. Furthermore, by incorporating dopants such as poly(glycerol) adipate acrylate (PGA-A) and 10,12-pentacosadyinoic acid (PCDA), we demonstrated the ability to print objects with a diverse range of functionalities, including temperature sensing probes and a polyester excipient, highlighting the potential applications of these new resins.