| Abstract: | ![]()
The reaction of living polystyrene, prepared with butyllithium as an initiator in a tetrahydrofuran/benzene (vol. ratio 1/1 or 2/1) solution at ?30°C or ?50°C, with chlorodimethylvinylsilane was carried out to prepare polystyrene with narrow molecular-weight distribution and with a vinylsilane end group ( 1 ). The radical copolymerization of vinyl acetate with 1 in ethyl acetate solution yields poly(vinyl acetate)-graft-polystyrene ( 2 ) of controlled graft segement length. The subsequent saponification of 2 with NaOH in methanol provides poly(vinyl alcohol)-graft-polystyrene ( 3 ). |
