https://scholars.lib.ntu.edu.tw/handle/123456789/632010
標題: | Functionalized Cellulose Nanofibers as Crosslinkers to Produce Chitosan Self-Healing Hydrogel and Shape Memory Cryogel | 作者: | Juan, Li Ting Lin, Shih Ho Wong, Chui Wei Jeng, U. Ser Huang, Chih Feng SHAN-HUI HSU |
關鍵字: | cellulose nanofiber | chitosan | cryogel | self-healing hydrogel | shape memory | 公開日期: | 17-八月-2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 14 | 期: | 32 | 起(迄)頁: | 36353 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | Cellulose nanofibers functionalized with multiple aldehyde group were synthesized as the crosslinker to produce composite self-healing hydrogel and shape memory cryogel from chitosan. The hydrogel possessed effective self-healing (∼100% efficiency) and shear-thinning properties. The cryogel had macroporous structure, large water absorption (>4300%), and high compressibility. Both hydrogel and cryogel were injectable. In particular, the cryogel (nanocellulose/chitosan 1:6) revealed thermally induced shape memory, the mechanism of which was elucidated by in situ small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) as changes in orientation of the induced crystalline structure during the shape memory program. The shape memory cryogel with a large size (15 mm × 10 mm × 1.1 mm) injected through a 16 G syringe needle was recoverable in 37 °C water. Moreover, the cryogel was cytocompatible and promoted cell growth. The nanocellulose-chitosan composite hydrogel and cryogel are injectable and degradable biomaterials with adjustable mechanical properties for potential medical applications. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/632010 | ISSN: | 19448244 | DOI: | 10.1021/acsami.2c07170 |
顯示於: | 高分子科學與工程學研究所 |
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