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Published in: Polymer Bulletin 5/2021

05-05-2020 | Original Paper

Swelling properties and drug release of new biocompatible POEGOPGMA hydrogels with VPTT near to the human body temperature

Authors: Edin Suljovrujic, Zorana Rogic Miladinovic, Maja Krstic

Published in: Polymer Bulletin | Issue 5/2021

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Abstract

Oligo (ethylene glycol) oligo (propylene glycol) methacrylates (OEGOPGMA) with different numbers of ethylene glycol (EG) and propylene glycol (PG) units in backbone were used for the preparation of new thermoresponsive POEGOPGMA hydrogels; EG6PG3MA and EG3PG6MA monomers were used; and three different POEGOPGMA hydrogels (PEG6PG3MA, PEG3PG6MA and P(EG6PG3/EG3PG6)MA copolymer with equal mol% of previous two) were fabricated from monomer–solvent (OEGOPGMA–water/ethanol) mixture by gamma radiation. Characterisation of the hydrogels was conducted by swelling, UV–Vis, scanning electron microscope, differential scanning calorimetry and in vitro biocompatibility (cytocompatibility and haemolytic activity) investigations. The modelling of drug release and diffusion characteristics was tested using cephalexin drug. For the first time, it was shown how to effectively tune the volume phase transition temperature (VPTT) values of the hydrogels by changing the ratio of more hydrophilic (EG) and more hydrophobic (PG) units in (EGPG) “block” pendant chains. The obtained hydrogels revealed the great potential for different biomedical applications not only due to the possibility to tune VPTT in the desired way but also due to the good biocompatibility and controlled drug delivery within the target temperature range.

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Metadata
Title
Swelling properties and drug release of new biocompatible POEGOPGMA hydrogels with VPTT near to the human body temperature
Authors
Edin Suljovrujic
Zorana Rogic Miladinovic
Maja Krstic
Publication date
05-05-2020
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 5/2021
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-020-03217-0

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