Abstract
The 2H-NMR technique is used to monitor the orientational behaviour of short labelled polymer chains dissolved in an unlabelled network under uniaxial stress. The methodology exploits the observation of residual nuclear interactions which are related to the degree of induced order. When the host matrix of polydimethylsiloxane (PDMS) is uniaxially deformed, an orientational anisotropy is induced at the segmental level of the PDMS probe chain. This orientation of the uncrosslinked chains demonstrates that orientational correlations take place in the deformed network. From a comparison with results established on crosslinked chains, it appears that these interchain effects are a dominant contribution to the orientation process of the effectively elastic chains.
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References
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© 1988 Elsevier Applied Science Publishers Ltd
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Deloche, B., Sotta, P., Herz, J., Lapp, A. (1988). Orientational Behaviour of Free Polymer Chains Dissolved in a Strained Network: A Deuterium Magnetic Resonance Investigation. In: Kramer, O. (eds) Biological and Synthetic Polymer Networks. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1343-1_24
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DOI: https://doi.org/10.1007/978-94-009-1343-1_24
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