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Polymers 2018, 10(8), 859; https://doi.org/10.3390/polym10080859

Molecular Dynamics of Functional Azide-Containing Acrylic Films

1
Instituto de Automática e Informática Industrial, Departamento de Termodinámica Aplicada, Universitat Politècnica de Valencia, 46022 Valencia, Spain
2
Instituto Tecnológico de la Energía, Departamento de Termodinámica Aplicada, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
3
Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
*
Authors to whom correspondence should be addressed.
Received: 26 June 2018 / Revised: 18 July 2018 / Accepted: 31 July 2018 / Published: 2 August 2018
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Abstract

A report on the syntheses, thermal, mechanical and dielectric characterizations of two novel polymeric acrylic materials with azide groups in their pendant structures is presented. Having the same general structure, these polymers differ in length of oxyethylene units in the pendant chain [-CONH-CH2CH2-(O-CH2CH2)nN3], where n is 1 (poly(N-(2-(2-azidoethoxy)ethyl)methacrylamide), PAzMa1) or 2 (poly(N-2-(2-(2-azidoethoxy)ethoxy)ethyl)methacrylamide), PAzMa2), leading with changes in their dynamics. As the thermal decomposition of the azide group is observed above 100 °C, dielectric analysis was carried out in the temperature range of −120 °C to 100 °C. Dielectric spectra of both polymers exhibit in the glassy state two relaxations labelled in increasing order of temperature as γ- and β-processes, respectively. At high temperatures and low frequencies, the spectra are dominated by ohmic conductivity and interfacial polarization effects. Both, dipolar and conductive processes were characterized by using different models. Comparison of the dielectric activity obtained for PAzMa1 and PAzMa2 with those reported for crosslinked poly(2-ethoxyethylmethacrylate) (CEOEMA) was performed. The analysis of the length of oxyethylene pendant chain and the effect of the methacrylate or methacrylamide nature on the dynamic mobility was analysed. View Full-Text
Keywords: azide containing polymers; dielectric relaxation spectroscopy; dipolar and conductive processes azide containing polymers; dielectric relaxation spectroscopy; dipolar and conductive processes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Carsí, M.; Sanchis, M.J.; Vallejos, S.; García, F.C.; García, J.M. Molecular Dynamics of Functional Azide-Containing Acrylic Films. Polymers 2018, 10, 859.

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