Synthesis of poly(vinyl alcohol)‐<i>graft</i>‐polystyrene

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<jats:title>Abstract</jats:title><jats:p>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 (<jats:bold>1</jats:bold>). The radical copolymerization of vinyl acetate with <jats:bold>1</jats:bold> in ethyl acetate solution yields poly(vinyl acetate)‐<jats:italic>graft</jats:italic>‐polystyrene (<jats:bold>2</jats:bold>) of controlled graft segement length. The subsequent saponification of <jats:bold>2</jats:bold> with NaOH in methanol provides poly(vinyl alcohol)‐<jats:italic>graft</jats:italic>‐polystyrene (<jats:bold>3</jats:bold>).</jats:p>

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