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摘要

The present invention relates to a composition comprising polymer particles and functionalised stimulus responsive polymer; the polymer particles (i) comprising block co-polymer, and (ii) having a core-shell structure, said block co-polymer comprising (a) a non-stimulus responsive polymer block that forms at least part of the core structure, and (b) a stimulus responsive polymer block that forms at least part of the shell structure; wherein the stimulus responsive polymer of both the polymer particles and the functionalised stimulus responsive polymer are responsive to at least one common stimulus.