Fourier transform infrared dichroism investigation of molecular orientation in model networks of poly(dimethylsiloxane)

S. Besbes; L. Bokobza; L. Monnerie

doi:10.1117/12.56408

1 March 1992 Fourier transform infrared dichroism investigation of molecular orientation in model networks of poly(dimethylsiloxane)

S. Besbes, L. Bokobza, L. Monnerie

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Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56408
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

Abstract

Segmental orientation in model networks of poly(dimethylsiloxane) PDMS in uniaxial tension are measured by infrared dichroism. Measurements are made on four tetrafunctional end- linked networks having molecular weights of 2000, 5000, 10,000, and 23,000 between junctions. The orientational function is shown to increase with cross-linking density. In the case of swollen samples, the orientational order parameter is found to increase with the degree of swelling. For a bimodal system consisting of two different molecular-weight species, the two types of chains tend to present the same orientational behavior.

Citation Download Citation

S. Besbes, L. Bokobza, and L. Monnerie "Fourier transform infrared dichroism investigation of molecular orientation in model networks of poly(dimethylsiloxane)", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56408

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