The present invention relates to wound dressings, more particularly for the need-based treatment of chronic and/or infected wounds, comprising a Bronsted acid and a pH-sensitive polymer, wherein the Bronsted acid is embedded in a matrix of pH-sensitive polymer or is surrounded by pH-sensitive polymer. The present invention also relates to particles containing a Bronsted acid and a pH-sensitive polymer for use in the treatment of wounds, more particularly infected wounds and/or chronic wounds.
