Abstract
AbstractPositron annihilation lifetime and Doppler broadening of annihilation radiation techniques were employed to investigate the relationship between free‐volume hole properties and miscibility of ethylene propylene diene monomer (EPDM)/acrylonitrile butadiene rubber (NBR) blends. It has been found that there were positive and negative deviations in free‐volume hole size (τ3) and concentration (I3) as well as S‐parameter from linear relationship of initial polymers indicating the immiscibility of the blend. The broadening in free‐volume hole distribution by increasing NBR content in EPDM/NBR blend confirm the results obtained by finite term analysis. From the filling effect of silica on free‐volume properties of EPDM/NBR (75/25) blend, it has been found that the addition of silica up to 50 phr is the most promising concentration for electrical application. Furthermore, correlations were established between free‐volume hole size and fraction combined with the results of electrical (dielectric constant and dielectric loss) and mechanical (stress at yield and strain at yield) properties. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Sign-in/Register to access full text options 
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.
