Biocompatible porous polyester-ether hydrogel scaffolds with cross-linker mediated biodegradation and mechanical properties for tissue augmentation
Journal article
Berkay Ozcelik, Jason Palmer, Katharina Ladewig, Paula Facal Marina, Geoffrey W. Stevens, Keren Abberton, Wayne Morrison, Anton Blencowe and Greg G. Qiao. (2018). Biocompatible porous polyester-ether hydrogel scaffolds with cross-linker mediated biodegradation and mechanical properties for tissue augmentation. Polymers. 10(2), pp. 1-19. https://doi.org/10.3390/polym10020179
Authors | Berkay Ozcelik, Jason Palmer, Katharina Ladewig, Paula Facal Marina, Geoffrey W. Stevens, Keren Abberton, Wayne Morrison, Anton Blencowe and Greg G. Qiao |
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Abstract | Porous polyester-ether hydrogel scaffolds (PEHs) were fabricated using acid chloride/alcohol chemistry and a salt templating approach. The PEHs were produced from readily available and cheap commercial reagents via the reaction of hydroxyl terminated poly(ethylene glycol) (PEG) derivatives with sebacoyl, succinyl, or trimesoyl chloride to afford ester cross-links between the PEG chains. Through variation of the acid chloride cross-linkers used in the synthesis and the incorporation of a hydrophobic modifier (poly(caprolactone) (PCL)), it was possible to tune the degradation rates and mechanical properties of the resulting hydrogels. Several of the hydrogel formulations displayed exceptional mechanical properties, remaining elastic without fracture at compressive strains of up to 80%, whilst still displaying degradation over a period of weeks to months. A subcutaneous rat model was used to study the scaffolds in vivo and revealed that the PEHs were infiltrated with well vascularised tissue within two weeks and had undergone significant degradation in 16 weeks without any signs of toxicity. Histological evaluation for immune responses revealed that the PEHs incite only a minor inflammatory response that is reduced over 16 weeks with no evidence of adverse effects. |
Keywords | polyester-ether; hydrogel; scaffold; biocompatible; biodegradation |
Year | 2018 |
Journal | Polymers |
Journal citation | 10 (2), pp. 1-19 |
Publisher | MDPI AG |
ISSN | 2073-4360 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/polym10020179 |
Scopus EID | 2-s2.0-85042006265 |
Open access | Published as ‘gold’ (paid) open access |
Publisher's version | License File Access Level Open |
Publication process dates | |
Deposited | 10 May 2021 |
https://acuresearchbank.acu.edu.au/item/8vzy4/biocompatible-porous-polyester-ether-hydrogel-scaffolds-with-cross-linker-mediated-biodegradation-and-mechanical-properties-for-tissue-augmentation
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Publisher's version
OA_Ozcelik_2018_Biocompatible_porous_polyester_ether_hydrogel_scaffolds.pdf | |
License: CC BY 4.0 | |
File access level: Open |
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