Resumo

MIRANDA, Francisco A. A.; PASSOS, Raimundo R.; LOPES, José Arimatéia D.  e  MOITA NETO, José M.. Multivariate analyses on FT-IR data of polymerization in situ of cyanoacrylate adhesive. Polímeros [online]. 1998, vol.8, n.2, pp.41-45. ISSN 0104-1428.  http://dx.doi.org/10.1590/S0104-14281998000200007.

The polymerization of a cyanoacrylate adhesive was accompanied by FT-IR during 30 minutes. The application of multivariate statistics techniques (Hierarchical Clusters Analyses and Principal Components) on infrared spectra allowed a better identification of spectral differences between monomer and polymer and also permitted to infer that the quantity of monomer and of mer of the polymer are equal in six minutes polymerization (half-life). The infrared technique appeared as an apropriate tool for observing the kinetics of cyanoacrylate adhesive reaction, which becomes even more efficient when associated to multivariate statistics techniques.

Palavras-chave : Multivariate analyses; FT-IR; kinetics polymerization; cyanoacrylate adhesive.

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