| 摘要 |
A polymeric blend comprises: (i) a polymeric material (A) having a repeat unit of formula (I) -O-Ph-O-Ph-CO-Ph- and a repeat unit of formula (II) -O-Ph-Ph-O-Ph-CO-Ph- wherein Ph represents a phenylene moiety; and (ii) a polymeric material (B) having a repeat unit of formula (XX): wherein t1 and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2. For preference formula (I) and (II) are all connected via the para- positions of all phenyl group. |
