| 초록 |
Development of bio-based hydrogels with good mechanical properties is essential for bio-applications such as bio-sensing, drug-delivery and tissue engineering. Cellulose is the most abundant bio-polymer which is widely distributed in plant. Cellulose gels are biocompatible and biodegradable but have weak mechanical properties. Cellulose-nanocrystals(CNCs) represent a biodegradable nanofiller and has excellent strength-to-weight ratio. In this study, we prepared cellulosic gels through the chemically-crosslink compounding the derivative of cellulose, carboxymethylcellulose sodium salt(CMCNa) and 2-Hydorxyethylcellulose(HEC). CMCNa and HEC were crosslinked by citric acid(CA), a naturally occuring crosslinking agent. To enhance the mechanical properties of cellulosic hydrogels, we introduced CNCs or ionic crosslinker(Fe3+) and KC network into CMCNa/HEC network. The effect of addition of CNC, Fe3+ ion and KC network on mechanical properties of cellulosic hydrogels is investigated. |
