A polymer blend of 60 volume % SPB 88 and 40 volume % SPB 78 is heated to 130°C and then cooled.
(a) Upon slow cooling, at what temperature does the single phase start to separate into two phases?
(b) How many phases are present at 70°C?
(c) What is the composition of each phase at 70°C?
(d) What is the volume fraction of each phase present at 70°C?
(a) 100°C
(b) Two: A 60 volume % SPB 88-40 volume % SPB 78 polymer blend at 70°C is in the two phase region.
(c) A tie line at 70?C intersects the solid line giving the composition of ? of 18 volume % SPB 88 and 82 volume % SPB 78, and the composition of ? is 82 volume % SPB 88 and 18 volume % SPB 78.
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