» Articles » PMID: 36850222

Study of Correlation Between Structure and Shape-Memory Effect/Drug-Release Profile of Polyurethane/Hydroxyapatite Composites for Antibacterial Implants

Overview
Publisher MDPI
Date 2023 Feb 28
PMID 36850222
Authors
Affiliations
Soon will be listed here.
Abstract

The effectiveness of multifunctional composites that combine a shape-memory polyurethane (PU) matrix with hydroxyapatite (HA) as a bioactive agent and antibiotics molecules results from a specific composite structure. In this study, structure-function correlations of PU-based composites consisting of 3, 5, and 10 (wt%) of HA and (5 wt%) of gentamicin sulfate (GeS) as a model drug were investigated. The performed analysis revealed that increasing HA content up to 5 wt% enhanced hydrogen-bonding interaction within the soft segments of the PU. Differential-scanning-calorimetry (DSC) analysis confirmed the semi-crystalline structure of the composites. Hydroxyapatite enhanced thermal stability was confirmed by thermogravimetric analysis (TGA), and the water contact angle evaluated hydrophilicity. The shape-recovery coefficient (R) measured in water, decreased from 94% for the PU to 86% for the PU/GeS sample and to 88-91% for the PU/HA/GeS composites. These values were positively correlated with hydrogen-bond interactions evaluated using the Fourier-transform-infrared (FTIR) spectroscopy. Additionally, it was found that the shape-recovery process initiates drug release. After shape recovery, the drug concentration in water was 17 μg/mL for the PU/GeS sample and 33-47 μg/mL for the PU HA GeS composites. Antibacterial properties of developed composites were confirmed by the agar-diffusion test against Escherichia coli and Staphylococcus epidermidis.

Citing Articles

Advancements in nanohydroxyapatite: synthesis, biomedical applications and composite developments.

Zhao R, Meng X, Pan Z, Li Y, Qian H, Zhu X Regen Biomater. 2025; 12:rbae129.

PMID: 39776858 PMC: 11703556. DOI: 10.1093/rb/rbae129.


Enhanced Antibacterial Activity of Vancomycin Loaded on Functionalized Polyketones.

Rampazzo R, Vavasori A, Ronchin L, Riello P, Marchiori M, Saorin G Polymers (Basel). 2024; 16(13).

PMID: 39000745 PMC: 11244503. DOI: 10.3390/polym16131890.


Investigation of Shape Memory Polyurethane Properties in Cold Programming Process Towards Its Applications.

Staszczak M, Urbanski L, Cristea M, Ionita D, Pieczyska E Polymers (Basel). 2024; 16(2).

PMID: 38257020 PMC: 10819366. DOI: 10.3390/polym16020219.


Electrospun Poly(carbonate-urea-urethane)s Nonwovens with Shape-Memory Properties as a Potential Biomaterial.

Rolinska K, Bakhshi H, Balk M, Blocki A, Panwar A, Puchalski M ACS Biomater Sci Eng. 2023; 9(12):6683-6697.

PMID: 38032398 PMC: 10716822. DOI: 10.1021/acsbiomaterials.3c01214.

References
1.
Mi H, Palumbo S, Jing X, Turng L, Li W, Peng X . Thermoplastic polyurethane/hydroxyapatite electrospun scaffolds for bone tissue engineering: effects of polymer properties and particle size. J Biomed Mater Res B Appl Biomater. 2014; 102(7):1434-44. DOI: 10.1002/jbm.b.33122. View

2.
Ma C, Wei Q, Cao B, Cheng X, Tian J, Pu H . A multifunctional bioactive material that stimulates osteogenesis and promotes the vascularization bone marrow stem cells and their resistance to bacterial infection. PLoS One. 2017; 12(3):e0172499. PMC: 5373515. DOI: 10.1371/journal.pone.0172499. View

3.
Du K, Gan Z . Shape memory behaviour of HA-g-PDLLA nanocomposites prepared via in situ polymerization. J Mater Chem B. 2020; 2(21):3340-3348. DOI: 10.1039/c3tb21861a. View

4.
Caplin J, Garcia A . Implantable antimicrobial biomaterials for local drug delivery in bone infection models. Acta Biomater. 2019; 93:2-11. PMC: 6615972. DOI: 10.1016/j.actbio.2019.01.015. View

5.
Liu W, Zhao Y, Wang R, Li J, Li J, Luo F . Post-Crosslinked Polyurethanes with Excellent Shape Memory Property. Macromol Rapid Commun. 2017; 38(23). DOI: 10.1002/marc.201700450. View