Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 57, Issue 1, Pages 35-39Publisher
WILEY
DOI: 10.1002/pola.29275
Keywords
biodegradable polymers; copolymerization; drug delivery systems; hydrogels; PEG-PLGA; thermoresponsive hydrogels
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Funding
- Israel Cancer Research Fund (ICRF)
- Jacki and Bruce Barron Cancer Research Scholars' Program
- ICRF
- City of Hope
- Harvey L. Miller Family Foundation
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Thermoresponsive, biodegradable polymeric hydrogel networks are used widely in medicinal applications. Poly(d,l-lactic acid-co-glycolic acid)-b-poly(ethylene glycol)-b-poly(d,l-lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) triblock copolymers exhibit a sol-gel transition upon heating. The effect of PLGA block and PEG chain molecular weights (MWs) on the gelling temperature of polymer aqueous solution (20% w/w) is described. All polymer solutions convert into a hard gel within 2 degrees C of the gelling temperature. The release properties of the gels were displayed using paracetamol as a representative drug. A linear relation is described between the gelling temperature and PLGA block MW. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 35-39
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