| 초록 |
Chitosan (CS) is obtained by N-deacetylation of chitin and it is composed of glucosamine and N-acetylglucosamine units. CS has been extensively studied for various applications because of its biocompatibility and biodegradability, which make CS based composites very useful in the biomedical fields such as scaffolds, membranes and hydrogel. CS based hydrogels have poor mechanical properties which limit its applications range. Cellulose nanocrystals (CNCs) are used in various applications due to their low density, low cost, abundance, renewability, high mechanical properties. CNCs could impart higher stiffness to the polymers when incorporated in polymer matrices due to their large aspect ratio and ability to form interconnected network structures through hydrogen bonding. Their aforementioned characteristics and reinforcing ability makes them an ideal reinforcement agent in polymer composites. Thus its incorporation in CS matrix can improve mechanical properties of CS based hydrogels. |
