Resumo

BUCIO, Emilio; BURILLO, Guillermina  e  OGAWA, Takeshi. Studies on Salts of Amine-Containing Polymers with Benzoic Acids. IV.: Polymeric Salts of Some Benzoic Acids with Poly(Dimethylaminopropyl Methacrylamide) grafted onto Polyethylene Films. Rev. Soc. Quím. Méx [online]. 2002, vol.46, n.4, pp.320-323. ISSN 0583-7693.

In order to obtain films having functional groups on the surface, polyethylene films were grafted with poly(N,N-dimethy-laminopropyl methacrylamide), and various benzoic acids were added to obtain polymeric salts. The benzoic acids having long substituents such as decynyloxy and n-octyloxy benzoic acids, showed mesophases (liquid crystalline phase), and no phase separation of the acids was observed on repeated heating and cooling. The stability is attributed to the interaction of the long substituents with polyethylene chains. Ethoxybenzoic acid having a short substituent, formed a polymeric salt but it is irreversibly separated from system on heating.

Palavras-chave : Gamma irradiation; graft polymers; polymeric salts.

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