Science Daily   April 26, 2023 A team of researchers in the US (University of Washington, industry) has developed printed circuit boards (PCB) formulation using transesterification vitrimers (vPCBs) and an end-to-end fabrication process compatible with standard manufacturing ecosystems to reduce the environmental impact of the vPCBs over conventional PCBs in 11 categories. They manufactured functional prototypes of Internet of Things devices transmitting 2.4 GHz radio signals on vPCBs with electrical and mechanical properties meeting industry standards. They showed that fractures and holes in vPCBs are repairable while retaining comparable performance over multiple repair cycles, and demonstrated a non-destructive recycling process based on […]