The crosslinking facilitators may be Bronsted Acids and/or salts thereof, such as ammonium salts thereof. [0057] In addition, metal salts, such as magnesium and zinc salts, can be used alone or in combination with Bronsted Acids and/or salts thereof, as crosslinking facilitators. [0058] Nonlimiting examples of suitable crosslinking facilitators include acetic acid, benzoic acid, citric acid, formi