Abstract
The miscibility of poly(α-methylstyrene-co-acrylonitrile) having an acrylonitrile (AN) content of 32 wt % (MSAN-32) with poly(styrene-co-acrylonitrile)s (SANs) was studied by differential scanning calorimeter. To decide the phase diagrams, very long isothermal annealing (sometimes above 200 h) was required. It was found that MSAN-32 is miscible with SAN having AN contents between 28 and 40 wt % at 130 °C. The miscibility range is in good agreement with that predicted using a non-hydrogen-bonding solubility parameter approach. Three segmental interaction parameters were calculated from the boundaries separating domains of miscibility and immiscibility. Lower critical solution temperature (LCST) type phase diagrams were found for miscible blends above 130 °C. This is the first observation of the presence of LCST behavior for MSAN/SAN blends. It was emphasized that the excessively long times are required to reach equilibrium for these blends.
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.
