Effect of poly(γ‐glutamic acid) on the gelation of Pluronic F127 |
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| Authors: | Yen‐Hsien Lee Ming‐Chien Yang |
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| Affiliation: | 1. Program of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC;2. Department of Polymer Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC |
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| Abstract: | The gelation of Pluronic F127 aqueous solution was investigated in the presence of sodium poly(γ‐glutamate) (PGA). The gelation temperature was determined based on the tube inversion technique. The gelation temperature increased greatly when the ratio of PGA to F127 was 0.2, and then decreased at higher ratios. The enthalpy of gelation (ΔHgel) was calculated based on the model of Eldridge and Ferry. A splitting in the model was observed when the PGA/F127 ratio was 0.2 which yielded both a maximum and a minimum of ΔHgel. These results indicate that PGA can significantly affect the gelation of F127. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | poly(γ ‐glutamic acid) Pluronic F127 gelation temperature enthalpy of gelation |
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