Shape memory polymer smart plaster for orthopaedic treatments
Article
Article Title | Shape memory polymer smart plaster for orthopaedic treatments |
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ERA Journal ID | 5016 |
Article Category | Article |
Authors | Jeewantha, Janitha (Author), Jayalath, Sandaruwan (Author), Emmanuel, Chris (Author), Herath, Madhubhashitha (Author), Forster, Elizabeth (Author), Islam, Mainul (Author), Leng, Jinsong (Author) and Epaarachchi, Jayantha (Author) |
Journal Title | Smart Materials and Structures |
Journal Citation | 31 (11), pp. 1-14 |
Article Number | 115016 |
Number of Pages | 14 |
Year | 2022 |
Place of Publication | United Kingdom |
ISSN | 0964-1726 |
1361-665X | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/1361-665X/ac943b |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/1361-665X/ac943b |
Abstract | Shape memory polymer (SMP) is a smart material that can respond to external stimuli and recover its permanent shape after being programmed. Researchers have been interested in SMPs for invasive biomedical applications, but there are many opportunities for non-invasive applications. Thus, in this study, a novel hybrid shape memory polymer nanocomposite smart plaster (SP) is synthesised for non-invasive orthopaedic fractured bone immobilisation. Due to its considerable structural properties, the SP for this study was synthesised with Bisphenol A epoxy, reinforced with E-glass fibres, its bioinspiration qualities were improved incorporating TiO2 nanoparticles. After that, the SP was preserved for three months under five different conditions. This was done to compare their environmental durability and usability for fractured bone immobilisation by analysing the resulting thermomechanical and shape memory properties. In addition, an Abaqus finite element model was developed and validated which can be used to optimise the design and geometrical parameters of the SP. The SP vitro performance was verified, demonstrating a lower limb leg cylindrical cast in less than 10 minutes. The SP at 50oC and two layers of cotton webril produced the optimum results, and the recorded maximum undercast temperature was less than 45oC, which was within the safe limit for human use. Furthermore, the undercast pressure did not surpass 30.2±5.2 mmHg, indicating that the results are equivalent to other bone immobilisation procedures. Therefore, the synthesised SP showed a promising approach to address existing orthopaedic fractured bone limb immobilisation challenges. |
Keywords | Shape memory polymers, Smart plaster, Nanocomposites, Durability, Orthopaedic |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
400308. Medical devices | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Future Materials |
Uva Wellassa University, Sri Lanka | |
Griffith University | |
Harbin Institute of Technology, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7v82/shape-memory-polymer-smart-plaster-for-orthopaedic-treatments
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