Poly(2-isopropenyl-2-oxazoline) hydrogels for biomedical applications
| Autor: | Mircea Teodorescu, Eugeniu Vasile, Alina Maria Anghelache, Richard Hoogenboom, Sergiu Cecoltan, Florica Adriana Jerca, Valentin Victor Jerca, Izabela-Cristina Stancu, Roxana Trusca, Emilian Ghibu, Dumitru Mircea Vuluga |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Biocompatibility
General Chemical Engineering 02 engineering and technology Oxazoline 010402 general chemistry 01 natural sciences chemistry.chemical_compound DESIGN Materials Chemistry Copolymer DRESSINGS Solubility DRUG-DELIVERY BIOMATERIALS KINETICS chemistry.chemical_classification POLY(2-OXAZOLINE) HYDROGELS Biology and Life Sciences General Chemistry Polymer IN-VITRO 021001 nanoscience & nanotechnology COPOLYMERS 0104 chemical sciences Chemistry POLYMERIZATION chemistry Polymerization Chemical engineering TISSUE Drug delivery Self-healing hydrogels 0210 nano-technology |
| Zdroj: | CHEMISTRY OF MATERIALS |
| ISSN: | 0897-4756 1520-5002 |
| Popis: | Synthetic polymers have had a major impact on the biomedical field. However, all polymers have their advantages and disadvantages, so that the selection of a certain polymeric material always is a compromise with regard to many properties, such as synthetic accessibility, solubility, thermal properties, biocompatibility, and degradability. The development of novel polymers with superior properties for medical applications is the focus of many research groups. The present study highlights the use of poly(2-isopropenyl-2-oxazoline) (PiPOx), as biocompatible functional polymer to develop synthetic hydrogel materials using a simple straightforward synthesis protocol. A library of hydrogels was obtained by chemical cross-linking of PiPO(x), using eight different nontoxic and bio-based dicarboxylic acids. The equilibrium swelling degree of the final material can be modulated by simple modification of the composition of the reaction mixture, including the polymer concentration in the feed ratio between the 2-oxazoline pendent groups and the carboxylic acid groups as well as the cross-linker length. The hydrogels with the highest water uptake were selected for further investigations regarding their potential use as biomaterials. We evaluated the thermoresponsiveness, the pH degradability under physiological conditions, and demonstrated proof-of-concept drug delivery experiments. The in vitro cellular studies demonstrated the noncytotoxic character of the PiPOx hydrogels, and their protein repellent properties, while mineralization studies revealed that such scaffolds do not promote mineralization/calcification phenomena. In view of these results, these hydrogels show potential use as ophthalmologic materials or in drug delivery applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|