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Polymacromonomers consisting of oligostyrene side chains (700 ≤ M n ≤ 5000 g/mol) and of a high molar mass polymethacrylate main chain are shown to exhibit a bottlebrush structure in that the PMA main chain adopts an extremely stiff conformation (i.e., a Kuhn statistical segment length of up to l k = 2000 Å) which is surrounded by the expanded but still flexible polystyrene side chains.
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Wintermantel et al. (1996) studied this question.
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