Ionic block copolymers

The emphasis so far has been placed on processes which, by their random nature, lead to polydispersity. For some fundamental studies and technological applications, block copolymers ionic initiation and living polymer techniques have been used [3.68], [3.69]. The growing polymer chains remain active until they are deliberately quenched. These processes yield polymers that are monodisperse with respect to molecular mass. Measurements made on dispersions, sterically-stabilized with almost monodisperse block copolymers, yield results which are more readily interpreted. 

Miranda, D.F., Versek, C., Tuominen, M.T., Russell, T.P., Watkins, J.J. 2014. Cross-linked block copolymer/ionic liquid self-assembled blends for polymer gel electrolytes with high ionic conductivity and mechanical strength. Macromolecules 46 9313-9323. 

Although this definition still fits most materials called IPNs, now some hybrid polymer blends, such as thermoplastie ayyarent IPNs, call for a broader concept [3,7,8]. In contrast to the chemically crosslinked IPNs, physical bonds are characteristic of the crosslinking in thermoplastic apparent IPNs. These physical bonds are glassy domains of block copolymers, ionic clusters in iono-mers, or crystalline domains in semicrystalline polymers. The components of thermoplastic IPNs are capable to form physical networks and are characterized by interpenetration of phases. Thermoplastic apparent IPNs take an inter-... 

Hoarfrost ML, Segalman RA (2011) Ionic conductivity of nanostructured block copolymer/ ionic liquid membranes. Macromolecules 44(13) 5281-5288. doi 10.1021/ma200060g... 

Chem. Descrip. POE-POP block copolymer Ionic Nature Nonionic CAS 9003-11-6... 

Chem. Descrip. Dimethyl silicone EO/PO block copolymer ionic Nature Nonionic... 

---