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Photopolymerization in 3D Printing
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2019-03-14 , DOI: 10.1021/acsapm.8b00165 Ali Bagheri 1 , Jianyong Jin 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2019-03-14 , DOI: 10.1021/acsapm.8b00165 Ali Bagheri 1 , Jianyong Jin 1
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The field of 3D printing is continuing its rapid development in both academic and industrial research environments. The development of 3D printing technologies has opened new implementations in rapid prototyping, tooling, dentistry, microfluidics, biomedical devices, tissue engineering, drug delivery, etc. Among different 3D printing techniques, photopolymerization-based process (such as stereolithography and digital light processing) offers flexibility over the final properties of the 3D printed materials (such as optical, chemical, and mechanical properties) using versatile polymer chemistry. The strategy behind the 3D photopolymerization is based on using monomers/oligomers in liquid state (in the presence of photoinitiators) that can be photopolymerized (via radical or cationic mechanism) upon exposure to light source of different wavelengths (depending on the photoinitiator system). An overview of recent evolutions in the field of photopolymerization-based 3D printing and highlights of novel 3D printable photopolymers is provided herein. Challenges that limit the use of conventional photopolymers (i.e., initiation under UV light) together with prospective solutions such as incorporation of photosensitive initiators with red-shifted absorptions are also discussed in detail. This review also spotlights recent progress on the use of controlled living radical photopolymerization techniques (i.e., reversible addition–fragmentation chain-transfer polymerization) in 3D printing, which will pave the way for widespread growth of new generations of 3D materials with living features and possibility for postprinting modifications.
中文翻译：
3D打印中的光聚合
3D打印领域在学术和工业研究环境中都在继续快速发展。3D打印技术的发展为快速成型，工具，牙科，微流控，生物医学设备，组织工程，药物输送等领域提供了新的实现方法。在不同的3D打印技术中，基于光聚合的工艺（如立体光刻和数字光处理）使用多种高分子化学方法，可提供3D打印材料最终特性（例如光学，化学和机械特性）的灵活性。3D光聚合背后的策略是基于使用液态的单体/低聚物（在存在光引发剂的情况下），该单体/低聚物在暴露于不同波长的光源（取决于光引发剂系统）后可以进行光聚合（通过自由基或阳离子机制）。本文提供了基于光聚合的3D打印领域的最新进展的概述以及新颖的3D可印刷光聚合物的重点。还详细讨论了限制使用常规光敏聚合物（即在紫外光下引发）以及前瞻性解决方案（例如掺入具有红移吸收的光敏引发剂）的挑战。这篇评论还重点介绍了在使用可控的活性自由基光聚合技术（例如，
更新日期：2019-04-01
中文翻译：
3D打印中的光聚合
3D打印领域在学术和工业研究环境中都在继续快速发展。3D打印技术的发展为快速成型，工具，牙科，微流控，生物医学设备，组织工程，药物输送等领域提供了新的实现方法。在不同的3D打印技术中，基于光聚合的工艺（如立体光刻和数字光处理）使用多种高分子化学方法，可提供3D打印材料最终特性（例如光学，化学和机械特性）的灵活性。3D光聚合背后的策略是基于使用液态的单体/低聚物（在存在光引发剂的情况下），该单体/低聚物在暴露于不同波长的光源（取决于光引发剂系统）后可以进行光聚合（通过自由基或阳离子机制）。本文提供了基于光聚合的3D打印领域的最新进展的概述以及新颖的3D可印刷光聚合物的重点。还详细讨论了限制使用常规光敏聚合物（即在紫外光下引发）以及前瞻性解决方案（例如掺入具有红移吸收的光敏引发剂）的挑战。这篇评论还重点介绍了在使用可控的活性自由基光聚合技术（例如，
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