The gel to sol transition of aqueous solutions of di-and triblock copolymers consisting of poly(ethylene oxide) and biodegradable polyesters was studied as a function of temperature. The molecular weight and the chemical composition of the biodegradable blocks, (poly(L-lactic acid), poly(DL-lactic a
Thermoreversible gelation of biodegradable polyester (PHBV) in toluene
β Scribed by Andrij Pich; Nadine Schiemenz; Volodymyr Boyko; Hans-Juergen P. Adler
- Book ID
- 108248313
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 799 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0032-3861
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π SIMILAR VOLUMES
Poly(ethylene oxide)-b-poly(L-lactic acid) (PEO-PLLA) diblock copolymers were synthesized via a ring opening polymerization from poly(ethylene oxide) and L-lactide. Stannous octoate was used as a catalyst in a solution polymerization with toluene as the solvent. Their physicochemical properties were
## Abstract **Summary:** We report a study of thermoreversible gelation of polybenzimidazole (PBI) in phosphoric acid (PA). The PBI gel in PA exhibits fibrillar network morphology and reversible first order phase transition. The gelation rate is measured by the tube tilting method and found to depe