Active Segment Polymerization of 1,3-Propanediamine Enables Low-Melting-Point Polyamides for High-Precision 3D Printing
The preparation of ultra-short-chain diamine-based polyamides by melt polycondensation remains a formidable challenge in polyamide synthesis, with 1,3-propanediamine (DAP) serving as a representative monomer. To date, the fundamental reasons why this monomer fails to yield satisfactory polymeric products via melt pol...