High‐Flexibility, High‐Toughness Double‐Cross‐Linked Chitin Hydrogels by Sequential Chemical and Physical Cross‐Linkings

Adv. Mater. 2016, 28, 5844 Paragraph 4, line 1, page 5844 should read: The chitin solution was prepared by dissolving α-chitin in 2.5 M KOH/0.67 M urea aqueous solution via a freeze-thawing process. The last sentence on page 5848 should read: Additionally, the stress of all the DC chitin hydrogels increases with the applied strain up to 80% and its energy dissipation was more effective than those of the physically cross-linked and chemically cross-linked chitin hydrogels during the loading-unloading cycles (Figure 4e and see Figure S4, Supporting Information). Additionally, the first line in the section “Preparation of chitin solution” of the Experimental Section on page 2 of the Supporting Information should read: The 2.5 M KOH/0.67 M urea aqueous solution was used as solvent for chitin dissolution. The authors would like to apologize for this oversight and for any confusion that has arisen as a result.