Abstract
The segmental orientational order generated in bimodal poly(dimethylsiloxane) networks under uniaxial stress is probed using 2 H-NMR. The induced segmental order is measured either on «short» chains (M n = 3000 g /mol) or on «long» chains (M n = 25000 g/mol). The segmental orientation is very similar for both kinds of chains and decreases linearly as the volume fraction Φ L of «long» chain increases. A mean field analysis including orientational correlations between segments is developed and accounts for these observations. Additionally, this study has been carried out on twosets of samples with different crosslinkers. It shows clearly that the induced orientational order depends on the nature of the crosslinking junctions
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
