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Vanillin-Based Resin for Additive Manufacturing
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-04-01 , DOI: 10.1021/acssuschemeng.0c00159 Alexander W. Bassett 1 , Amy E. Honnig 1 , Claire M. Breyta 1 , Ian C. Dunn 1 , John J. La Scala 2 , Joseph F. Stanzione 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-04-01 , DOI: 10.1021/acssuschemeng.0c00159 Alexander W. Bassett 1 , Amy E. Honnig 1 , Claire M. Breyta 1 , Ian C. Dunn 1 , John J. La Scala 2 , Joseph F. Stanzione 1
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Stereolithography (SLA) is a well-established additive manufacturing (AM) technique that allows a resin to be photopolymerized into high resolution parts with rapid production times. Vanillin, a naturally occurring molecule as well as a derivative easily obtained from biomass, including lignin, can be used as a building block for vinyl ester resins (VERs) and AM-ready materials. A vanillin-based VER, prepared via a 100% atom efficient and solventless technique, was investigated for AM applications due to its low viscosity and demonstrated ability to photopolymerize. The resin was additively manufactured via SLA and the effect of postprocessing after printing was investigated. The extent of cure between the printed and postprocessed samples was found to have the highest effect on polymer properties, increasing extent of cure by approximately 23%. With postprocessing, the printed material was shown to have a glass transition temperature (Tg) of 153 °C and Young’s modulus of 4900 MPa, comparable to the same resin cured via traditional thermal techniques. This resin system has the potential to be used as a standalone high strength and high Tg material for SLA. Furthermore, the resin system also has potential as a formulation base for tunable SLA cure characteristics and final desired printed polymer properties while retaining significant biobased content.
中文翻译：
基于香兰素的增材制造树脂
立体光刻（SLA）是一项行之有效的增材制造（AM）技术，该技术可使树脂以快速的生产时间光聚合为高分辨率零件。香兰素是一种天然存在的分子以及容易从生物质中获得的衍生物，包括木质素，可用作乙烯基酯树脂（VERs）和AM就绪材料的基础材料。由于其低粘度和表现出的光聚合能力，通过100％原子高效和无溶剂技术制备的基于香兰素的VER已针对AM应用进行了研究。通过SLA增材制造了该树脂，并研究了印刷后的后处理效果。发现印刷样品和后处理样品之间的固化程度对聚合物性能具有最高影响，固化程度增加了约23％。T g）为153°C，杨氏模量为4900 MPa，与通过传统热技术固化的相同树脂相当。该树脂体系有潜力用作SLA的独立高强度和高T g材料。此外，该树脂体系还具有作为可调整SLA固化特性和最终所需的印刷聚合物性能的配方基础的潜力，同时保留了大量的生物基含量。
更新日期：2020-04-03
中文翻译：
基于香兰素的增材制造树脂
立体光刻（SLA）是一项行之有效的增材制造（AM）技术，该技术可使树脂以快速的生产时间光聚合为高分辨率零件。香兰素是一种天然存在的分子以及容易从生物质中获得的衍生物，包括木质素，可用作乙烯基酯树脂（VERs）和AM就绪材料的基础材料。由于其低粘度和表现出的光聚合能力，通过100％原子高效和无溶剂技术制备的基于香兰素的VER已针对AM应用进行了研究。通过SLA增材制造了该树脂，并研究了印刷后的后处理效果。发现印刷样品和后处理样品之间的固化程度对聚合物性能具有最高影响，固化程度增加了约23％。T g）为153°C，杨氏模量为4900 MPa，与通过传统热技术固化的相同树脂相当。该树脂体系有潜力用作SLA的独立高强度和高T g材料。此外，该树脂体系还具有作为可调整SLA固化特性和最终所需的印刷聚合物性能的配方基础的潜力，同时保留了大量的生物基含量。
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