2019 Volume 55 Issue 4 Pages 143-152
This paper describes the efficient and powerful synthetic method of monodisperse oligoamide hard segment,and its application to multiblock copolymer synthesis. The SOCl2 with amide solvent activation reagent fordicarboxylic acid compounds was utilized for the controlled synthesis of the monodisperse oligoamide. Thesynthesis of well-defined oligoamide was confirmed by GPC, NMR, and MALDI TOF-MS spectroscopy. Theobtained hard segment was polymerized with PPO or PEG having amine functionalities at the both ends,affording the corresponding multiblock copolymers. The thermoplastic elastomeric properties were studied,and the shape memory effect was found on PEG-based materials. These polymer films also showed goodmoisture responsive behavior within just 10 s upon exposing only one of its surfaces to humid air.
