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Thermogelling Poly(caprolactone-b-ethylene glycol-b-caprolactone) Aqueous Solutions
Abstract
Poly(caprolactone- b -ethylene glycol- b -caprolactone) (PCL−PEG−PCL) triblock copolymer aqueous solution (>15 wt %) undergoes the sol−gel−sol transition as the temperature increases from 10 to 60 °C. The mechanism and structure−property relationship of the sol−gel transition were investigated. In particular, compared with the PEG−PCL−PEG triblock copolymers recently reported by our group, PCL−PEG−PCL has (1) a synthetic advantage without a hexamethylene diisocyanate coupling step, (2) a wider gel window of over 15−32 wt %, and (3) a larger gel modulus. Both PEG−PCL−PEG and PCL−PEG−PCL polymers are an important progress in the biodegradable thermogelling system in that they can be lyophilized in a powder form, are easy to handle, are easy to redissolve to a clear solution, and show little syneresis through the gel phase.
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Metadata
- Authors
- Bae, S. J., Suh, J. M., Sohn, Y. S., Bae, Y. H., Kim, S. W., & Jeong, B.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-05-17
- Volume
- 38
- Issue
- 12
- Pages
- 5260-5265
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W1980543487
- Cited by
- 285
- References
- 0
- FWCI
- 7.01
- Type
- journal article
- Language
- en
- Open access
- closed
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