WebbSwelling as a function of carbonate content of the monomers, hydroxyl functionality, and crosslink density, respectively, was examined by immersing NIPU samples in water and … WebbNIPU-EJD is an European Joint Doctorate in “Synthesis, Characterization, Structure and Properties of Novel Non-Isocyanate Polyurethanes”. NIPU-EJD is set up by a …

Tailor-Made Bio-Based Non-Isocyanate Polyurethanes (NIPUs)

Webb1 maj 2024 · The two broad methods i.e. (i) polycondensation and (ii) polyaddition reactions for the synthesis of NIPU have shown in Fig. 2a and 2b, respectively. The pioneer work for the preparation of polymeric urethanes the synthesis of ethylene carbonate was conducted by Dyer and Scott in 1957 [5, 27 ]. Webb19 okt. 2024 · The transition towards safer and more sustainable production of polymers has led to a growing body of academic research into non-isocyanate polyurethanes … pump and ar

Facile and Sustainable Synthesis of Erythritol bis(carbonate), a ...

WebbSwelling ratio of the NIPUs are also measured in tetrahydrofuran (THF). As the number of urethane side chains increases, the swelling ratio of the NIPUs decreases (710% to 620%), indicating the... Webb10 juni 2024 · Nonisocyanate polyurethane (NIPU) is a research hotspot in polyurethane applications because it does not use phosgene. Herein, a novel method of solvent- and catalyst-free synthesis of a hybrid nonisocyanate polyurethane (HNIPU) is proposed. Webb23 juni 2024 · Among different attempts to replace the conventional process, polyaddition of cyclic carbonates (CCs) and polyfunctional amines seems to be the most promising way to obtain non-isocyanate... pump and crunch