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Keywords:

  • chain-growth condensation polymerization;
  • crosslinking;
  • glass transition temperature;
  • graft copolymers;
  • hydrogen bonding network;
  • polyamides
Thumbnail image of graphical abstract

Polystyrene-graft-poly(p-benzamide) was synthesized by free radical copolymerization of poly(N-octyloxybenzyl-p-benzamide) macromonomer and styrene, followed by the removal of the octyloxybenzyl groups from amide nitrogen. The glass transition temperature (Tg) of polystyrene-graft-poly(p-benzamide) increased dramatically by 50–60 °C when the content of poly(p-benzamide) exceeded a threshold of about 4%.