Journal
CARBOHYDRATE POLYMERS
Volume 176, Issue -, Pages 195-202Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.08.032
Keywords
Chitosan; Hydrogel; Gradient structure; Step-by-step cross-linking
Categories
Funding
- National Natural Science Foundation of China [81200814]
Ask authors/readers for more resources
The development of scaffolds to mimic the gradient structure of natural tissue is an important consideration for effective tissue engineering. In the present study, a physical cross-linking chitosan hydrogel with gradient structures was fabricated via a step-by-step cross-linking process using sodium tripolyphosphate and sodium hydroxide as sequential cross-linkers. Chitosan hydrogels with different structures (single, double, and triple layers) were prepared by modifying the gelling process. The properties of the hydrogels were further adjusted by varying the gelling conditions, such as gelling time, pH, and composition of the crosslinking solution. Slight cytotoxicity was showed in MTT assay for hydrogels with uncross-linking chitosan solution and non-cytotoxicity was showed for other hydrogels. The results suggest that step-by-step cross-linking represents a practicable method to fabricate scaffolds with gradient structures. (C) 2017 Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available