Resumo

BAEZ, José E.. Growth in the end-groups: Reactivity of terminal groups in polymers to the synthesis of block copolymers. Educ. quím [online]. 2016, vol.27, n.2, pp.97-104. ISSN 0187-893X.  https://doi.org/10.1016/j.eq.2015.11.001.

Three different cases of reactions using end-groups in polymers were analyzed for the synthesis of block copolymers, such as: a) azide (R-N3) and alkine (R-C≡CH) end groups to obtain a 1,3-dipolar cycloaddition (click chemistry), b) α,ω-hydroxy telechelic polymers (HO-R-OH) and diisocyanates (OCN-R-NCO) to synthesize polyurethanes by polycondesation and c) alkyl halides (R-Cl or R-Br) to prepare block copolymers derived of polystyrene by atom transfer radical polymerization (ATRP).

Palavras-chave : Block copolymer; End-group; Click chemistry; Polyurethane; Atom transfer radical polymerization (ATRP).