writer：Yu S, Zhang RC, Wu Q, Chen TH, Sun PC
keywords：high-performance, recyclability, Diels-Alder reaction, cross-link, polyurethane
source：期刊
specific source：Advanced Materials 2013, 25, 4912–4917
Issue time：2013年
Bio-inspired molecular design and synthesis of high-performance and recyclable cross-linked polymers is reported. Reversible cross-links between hard segments are incorporated into linear segmented polyurethane via Diels-Alder reaction between
maleimide pendant group and furan cross-linker. The materials form hierarchical structure and exhibit excellent properties with high stiffness, strength and toughness, and can be easily thermally reshaped and re-mended.