Journal
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
Volume 75, Issue 3, Pages 388-392Publisher
ELSEVIER
DOI: 10.1016/j.ejpb.2010.04.015
Keywords
Chitosan; Thermo-sensitive; Rheology; Physicochemical characterization
Categories
Funding
- National 863 Project [2007AA021902]
- Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [200806100065]
- New Century Excellent Talents in University [NCET-08-0371]
- Chinese Key Basic Research Program [2010CB529906]
Ask authors/readers for more resources
In present study, the feasibility of developing a novel thermo-sensitive hydrogel suitable for injectable formulations based on chitosan and inorganic phosphate was demonstrated. The physicochemical and rheological changes of chitosan/dibasic sodium phosphate solutions as in function with temperature were investigated in order to gain a better understanding of gelation process. According to the result of rheological study, there are two phase transition points as in function with temperature, corresponding to 30 degrees C and 43 degrees C. The system is gel state at similar to 4 degrees C. With the temperature increased to 30 degrees C. the gel-sol transition as well as the decrease in turbidity was observed. The sol-gel transition as well as the increase in turbidity was observed again as the temperature was above 43 degrees C. And the gel obtained at similar to 4 degrees C is reversible, but the gel obtained at 43 degrees C is irreversible. (C) 2010 Elsevier B.V. All rights reserved.
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