Journal
GELS
Volume 7, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/gels7030077
Keywords
in situ hydrogel; thermogel; supramolecular hydrogel; LCST polymer; biomedical
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Funding
- A*STAR IAF-PP (HMBS Domain) grant [H17/01/a0/013]
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Thermogels, also known as thermo-sensitive hydrogels, exhibit sol-gel transition with increasing temperature and are injectable yet can form in situ gel in the human body. They serve as a useful platform biomaterial operating at physiological body temperatures. Research on thermogels has shown diverse applications in drug delivery, 3D cell culture, and tissue engineering.
Thermogels are also known as thermo-sensitive or thermo-responsive hydrogels and can undergo a sol-gel transition as the temperature increases. This thermogelling behavior is the result of combined action from multiscale thermo-responsive mechanisms. From micro to macro, these mechanisms can be attributed to LCST behavior, micellization, and micelle aggregation of thermogelling polymers. Due to its facile phase conversion properties, thermogels are injectable yet can form an in situ gel in the human body. Thermogels act as a useful platform biomaterial that operates at physiological body temperatures. The purpose of this review is to summarize the recent progress in thermogel research, including investigations on the thermogel gelation mechanism and its applications in drug delivery, 3D cell culture, and tissue engineering. The review also discusses emerging directions in the study of thermogels.
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