Determination of the temperatures of the γ, β and α relaxation processes in nylon 6, 6 by Raman spectroscopy. (5th December 2016)

• Record Type: Journal Article
• Authors: Bertoldo Menezes, Durval; Reyer, Andreas; Marletta, Alexandre; Musso, Maurizio
• Is Part Of: Polymer. Volume 106(2016)
• Page Start: 85
• Page End: 90
• Publication Date: 2016-12-05
• Subjects: γ, β and α relaxations processes -- Raman spectroscopy -- relaxation temperature of nylon 6, 6; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2016.10.058
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: γ, β and α relaxation processes in nylon 6, 6 were studied by means of Raman spectroscopy, being a vibrational spectroscopic technique sensitive to chemical groups in the polymeric matrix and therefore sensitive to temperature dependent changes in the molecular configuration of the polymeric sample probed. Through a temperature-dependent Raman spectroscopic experiment within the temperature range from -120 °C to +120 °C we determined temperature-dependent changes of peak parameters of the Raman bands associated with the CO, CC, and NH stretching vibrations, being able to determine the temperature ranges where changes occur which can be associated with relaxation processes, which result to be in accordance with published experimental results obtained by thermodynamic and mechanical techniques, i.e. macroscopic techniques. Graphical abstract: Highlights: γ, β, α relaxation temperatures of nylon 6/6 determined by Raman spectroscopy. agreement with DSC and DMA data from literature. ν(NH), ν (CO) and ν(CC) vibrational modes influenced during γ, β and α relaxation.