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 […]
Tag Archives: Waste management
Chemists convert plastic bottle waste into insecticide sorbent
Phys.org December 23, 2020 An international team of researchers (Russia, China, Czech Republic, South Korea) created a sorbent that belongs to metal-organic frameworks, for imidacloprid insecticide removal from water. They developed a method to synthesize a metal-organic framework named UiO-66 with zirconium ions. The framework is sensitive to imidacloprid and due to its porosity and physicochemical properties, it attracts insecticide molecules removing them from water. In tests effective water purification took 15 grams of sorbent per liter. The sorbent may be reused several times. They reached up to five cycles during experiments. In the future the sorbent can be used […]