Poly(β-pinene) was brominated by N-bromosuccinimide on the allylic carbons. Then the brominated product was activated by AlEt2Cl to initiate the polymerization of styrene to give a β-pinene/styrene graft copolymer. AlEt2Cl was selected because it alone could not initiate the polymerization of styrene. The obtained graft copolymer was characterized by GPC, 1H-NMR, and DSC measurements, respectively.
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Liang et al. (2000) studied this question.
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