We have synthesized a number of block copolymers, some of which are shown in Figures 16-1 and 16-2. PMMA is Poly(methyl methacrylate), PX is a silicon-containing polymer, PαMSt is Poly(α-methyl styrene), PBuOSt is Poly(p-butoxy styrene), and PBuSt is Poly(p-4-butenyl styrene).
1) is an old type of diblock copolymer that has been the subject of most research reports. Since MMA, a polar monomer, is used as one component, polymerization is difficult, and the PDI is not so small.
2) to 9) are high-chi di- to octablock copolymers, and are further distinguished by the presence or absence of silicon in the polymer.
