By Nicholas Gripp, Applied Molecules LLC This study undertakes a comprehensive examination of the photopolymerization kinetics of materials commonly used in additive manufacturing, focusing on the discernment of gel point vs. cure point. Leveraging the sensitivity of photo-rheology, 1 the onset of gelation is precisely identified, marking the transition from viscous to elastic … [Read more...] about Photo-Rheology and FTIR Cure Analysis of Photopolymer Resins for Additive Manufacturing
Photopolymerization
Photopolymerizations for Creating Engineered Microenvironments: From 3D Culture Models to Biomanufacturing Facilitated by Interdisciplinary Collaborations
By April M. Kloxin, Ph.D., Chemical and Biomolecular Engineering and Materials Science and Engineering, University of Delaware Photochemistry increasingly is used as a tool in both academic and industrial applications, largely owing to its scalability and precision in controlling when and where reactions happen under mild conditions through the application of light. 1-3 … [Read more...] about Photopolymerizations for Creating Engineered Microenvironments: From 3D Culture Models to Biomanufacturing Facilitated by Interdisciplinary Collaborations
Characterizing Accuracy in Photopolymer AM: A Q&A with Michelle Hoffecker and Matthew Panzer from Carbon
Coordinated by Photopolymer Additive Manufacturing Alliance (PAMA)* Members Callie Higgins and Jason Kilgore, NIST Photopolymer additive manufacturing (PAM), or vat photopolymerization (VPP), is a powerful tool that enables three-dimensional (3D), micrometer-level control of the geometric, mechanical and chemical properties of a fabricated part. While useful and potentially … [Read more...] about Characterizing Accuracy in Photopolymer AM: A Q&A with Michelle Hoffecker and Matthew Panzer from Carbon
Challenges for High-Temperature Photopolymers in Additive Manufacturing
By Mehrgan Khavari, 3D Systems Corporation In 2017, 3D Systems’ digital light processing (DLP)-based technology – known as Figure 4® – was introduced. The technology is a derivative of stereolithography (SLA) where a 3D model is sliced into two-dimensional images and the images are sequentially flashed on the bottom of a resin tray equipped with a light-permeable, … [Read more...] about Challenges for High-Temperature Photopolymers in Additive Manufacturing
RadTech and NIST Collaborate on New Alliance
By Dianna Brodine, managing editor, UV+EB Technology RadTech, the nonprofit association for UV/EB photopolymer chemistry, in cooperation with The National Institute of Standards and Technology (NIST), has formed the Photopolymer Additive Manufacturing Alliance (PAMA), to engage industry, academia, government and nongovernmental organizations to advance materials and systems … [Read more...] about RadTech and NIST Collaborate on New Alliance