Search Results - yu-chung+chang

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A Facile, Mild, Fast, Catalyst Free Polylactic Acid (PLA) Degradation Method that Generates a Variety of Valuable Products ­Unmet Need: Current Polylactic Acid Recycling Processes are not Optimal, Requiring High Pressures/Temperatures, Long Degradation Times and/or Catalysts Currently, PLA degradation routes are divided into three categories: high temperature hydrolysis, low temperature hydrolysis and alcoholysis. Alcoholysis usually requires transesterification catalysts... Published: 5/25/2023   |   Inventor(s): Jinwen Zhang, Yu-Chung Chang, Lin Shao Keywords(s): 3D printing, aminolysis, chemcial recycling, polylactic acid, recycling of composites

A prism array based portable microplate reader Unmet Need: Portable and low-cost point-of-care smart phone reader Traditionally, microplate based assays rely on laboratory microplate reader for data reading and analysis. This greatly limited the application of microplate based assays to laboratories and well-trained professionals. For on-field applications that require rapid and immediate, low-cost,... Published: 4/28/2023   |   Inventor(s): Lei Li, Li-Ju Wang, Rongrong Sun, Yu-Chung Chang Keywords(s):