A novel halogen-free 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-containing co-curing agent, 6,6′-(1,4-phenylenebis(((4-(phenylamino)phenyl)amino)methylene))bis (dibenzo[c,e] In order to synthesize a kind of efficient flame retardant with little influence on the material's mechanical properties by easy procedure, we design a novel molecule with a linear rigid structure containing

Polymeric micelles encapsulating and releasing hydrophobic guest molecules.

No abstract

Compared with the single polymer micelle system, the polyion complex micellar system is consisted of two or more polymers with different composition, which has more flexible structural adjustment and better performance, making them widely used in drug control release. In this work, two azobenzene-based amphiphilic copolymers P (MMA-co-PEGMA-co-NIPAM-co-HAZOMA) with ionized carboxyl and P (MMA-co-PEGMA-co-NIPAM-co-NNAZOMA) with protonated tertiary amine group were synthesized by reversible additionfragmentation chain transfer (RAFT) polymerization. We studied selfassembled behavior of polymers and multi-component polymers, including their multiple responsiveness and the encapsulation, controlled release properties of polyion complex micelle. Light, pH, temperature, and reduction responsiveness of three micelles were investigated by UV-vis spectroscopy, transmission electron microscope (TEM), and dynamic light scattering. Compared to RCP 1, and RCP 2, RCP 1/RCP 2 micelle can release Nile red in both acidic and alkaline environment. When temperature reached critical solution temperature, RCP 1/RCP 2 micelle would release Nile red faster. Polyion complex micelle had better release performance compared to single micelles at the same environment, and could release in a wider range pH, making it had more potential applications in biological science field.