Synthesis and characterization of new polydiolcitrates with tunable properties
| Autor: | Valeria Alzari, Alberto Mariani, Mariella Rassu, Davide Sanna, Luca Nuvoli, Vanna Sanna, Daniele Nuvoli |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Diol Swelling capacity 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Polyester Shape-memory polymer chemistry.chemical_compound chemistry PEG ratio Polymer chemistry Materials Chemistry medicine Swelling medicine.symptom 0210 nano-technology Glass transition Ethylene glycol |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 54:3713-3720 |
| ISSN: | 0887-624X |
| DOI: | 10.1002/pola.28267 |
| Popis: | Polydiolcitrates are an emerging class of biocompatible polyesters with a great potential in the field of biomedicine and packaging for food and drug materials. In this work, a new type of (co-)polydiolcitrates made of citric acid (CA) and ethylene glycol (EG) and/or poly(ethylene glycol) (PEG) is investigated. By varying both the EG/PEG and the CA/diol molar ratios, materials exhibiting very different swelling behavior, mechanical and thermal properties are obtained. In particular, the substitution of EG segments with longer and flexible PEG ones results in an increase in crosslinking density, with remarkable effects on swelling capacity, glass transition temperature, and Young modulus. Moreover, polyesters with CA/diol molar ratio equal to 1:1 exhibit shape memory properties, with full capacity of keeping the temporary shape and high capacity of recovering the original shape. This work demonstrates that the appropriate choice of polyester composition allows modulating the sample properties, that permits to these materials to cover a wide range of possible applications. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 3713–3720 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text