Hayashi, Mikihiro; Kimura, Takahiro; Oba, Yuta; Takasu, Akinori published the artcile< One-Pot Synthesis of Dual Supramolecular Associative PMMA-Based Copolymers and the Precise Thermal Property Tuning>, Recommanded Product: Pyridin-4-ylmethanamine, the main research area is onepot dual supramol associative PMMA copolymer.
Dual supramol. associative polymers have attracted attention for efficient phys. property modification. Herein, a one-pot synthesis of dual supramol. associative poly(Me methacrylate)-based copolymers via reversible addition fragmentation chain transfer (RAFT) copolymerization using a novel methacrylate-type monomer (coded as UP-MA) bearing a urea bond and a pendant pyridine group is demonstrated. UP-MA is synthesized by reacting 4-picolylamine and 2-isocyanatoethyl methacrylate. The subsequent RAFT copolymerization of UP-MA and Me methacrylate (MMA) can be performed by directly adding MMA, a chain transfer agent, and a radical initiator into the reaction solution of UP-MA. The estimated values of radical reactivity ratio (r) for UP-MA and MMA are close to unity, attaining a nearly ideal random sequence of the dual supramol. associative units in the copolymer chain. By blending a metal salt into the random copolymer, coordination bonds between the salt and the pyridine groups are formed, and the urea groups simultaneously form hydrogen bonds, generating a dual supramol. associative network. Precise tuning of the thermal property is realized by changing the fraction of the metal salt and associative groups in the copolymers.
Macromolecular Chemistry and Physics published new progress about Glass transition temperature. 3731-53-1 belongs to class pyridine-derivatives, and the molecular formula is C6H8N2, Recommanded Product: Pyridin-4-ylmethanamine.