Melting of deuterated polyethylene as studied by FTIR and calorimetry

C. Cassou; P. Bernazzani; A. Musande; G. Delmas

doi:10.1117/12.166765

31 January 1994 Melting of deuterated polyethylene as studied by FTIR and calorimetry

C. Cassou, P. Bernazzani, A. Musande, G. Delmas

Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166765
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada

Abstract

Polymers are considered to be composed of two phases: one crystalline and the other amorphous. Recent work by N.M.R. and differential scanning calorimetry (DSC), suggest that a third semi-ordered phase exists. Our objective is to prove the existence of this phase using a third independent method. The fusion of a nascent sample of polyethylene is investigated by IR absorption spectroscopy and corroborates the results of the other techniques. The study concluded that chain movements and strain could be followed by FTIR. The melting characteristics of this phase and other properties are similar to that of a physical network whose cohesive junctions, the entanglements, are submitted to strain during a temperature rise.

Citation Download Citation

C. Cassou, P. Bernazzani, A. Musande, and G. Delmas "Melting of deuterated polyethylene as studied by FTIR and calorimetry", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); https://doi.org/10.1117/12.166765

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