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vol.51 número3HYDROCARBONS AND ORGANOCHLORINE PESTICIDES IN SOILS OF THE URBAN ECOSYSTEM OF CHILLÁN AND CHILLÁN VIEJO, CHILEPHOTOCHEMICAL DEPOSITION OF Pd-LOADED AND Pt-LOADED TIN OXIDE THIN FILMS índice de autoresíndice de materiabúsqueda de artículos
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Journal of the Chilean Chemical Society

versión On-line ISSN 0717-9707

Resumen

GATICA, NICOLÁS; ALVARADO, NANCY  y  SEPULVEDA, DANIELA. BLENDS OF POLY(METHYL METHACRYLATE-CO-METHACRYLIC ACID) AND TWO DIHYDRIC PHENOLS: THERMAL AND INFRARED SPECTROSCOPIC STUDIES. J. Chil. Chem. Soc. [online]. 2006, vol.51, n.3, pp. 945-949. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072006000300003.

The miscibility in blends containing poly(methyl methacrylate-co-methacrylic acid) [P(MMA-co-MA)] as polymer component and the dihydric phenols 4,4'-thiodiphenol (TDP) and 4,4'-methyllendiphenol (MDP) as low molecular weight compounds (LMWC) was studied by Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectrophotometry (FTIR). Thermal properties, such as the glass transition of P(MMA-co-MA) and the melting of the LMWC, were found to be clearly affected when the compounds were blended, which was attributed to the miscibility between them. FTIR was used to investigate the specific interactions between P(MMA-co-MA) and the LMWC. The formation of intermolecular hydrogen bonds between the carbonyl groups of P(MMA-co-MA) and the hydroxyl groups of TDP and MDP were discovered. Thermogravimetric and viscometry analysis were also used as additional techniques to complement the obtained FTIR and DCS results

Palabras clave : blends; poly(methyl methacrylate-co-methacrylic); ,4'-thiodiphenol; 4,4'-methyllendiphenol; hydrogen bond; low molecular weight compounds.

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