![](/images/graphics-bg.png)
Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity
Joint Authors
Pielichowski, Krzysztof
Pielichowska, Kinga
Król-Morkisz, Klaudia
Karaś, Ewelina
Majka, Tomasz M.
Source
Advances in Polymer Technology
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-12-19
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Nanostructured hydroxyapatite (HA) functionalized with poly(ethylene glycol) (HA-g-PEG) of different molar mass was used as a thermal stabilizer to prepare polyoxymethylene (POM) composites by a melt processing method.
The chemical and crystalline structure of (HA-g-PEG) and POM/HA-g-PEG composites was investigated by means of FTIR and XRD.
The thermal properties, degree of crystallinity, and melting behaviour of POM-based composites were analysed with TG, DSC, and TOPEM DSC methods.
The tensile strength, Young’s modulus, toughness, and wettability of POM were investigated as well.
A preliminary assessment of bioactivity, in vitro chemical stability, and formaldehyde release from POM/HA-g-PEG composites by Schiff’s test was also performed.
An SEM/EDX method was used to observe the morphology of POM/HA-g-PEG composites.
The results indicate that the addition of 1% HA-g-PEG slightly increases the melting temperature and degree of crystallinity.
In small amounts, HA-g-PEG particles probably act as nucleating agents for the POM crystallization process.
Incorporation of 5% HA-g-PEG to POM caused a decrease in the crystallinity of the polymer matrix, as a result, some mechanical properties of POM/HA-g-PEG composites also decreased.
The thermal stability of POM/HA-g-PEG composites improved significantly from 309°C for unmodified POM to 342°C for POM/10.0% HA-g-PEG 600.
The most effective thermal stabilizer was synthesized with the lowest mass-average molar mass PEG.
The in vitro bioactivity test confirmed that, as the average molar mass of PEG in HA-g-PEG hybrids increased, POM-based composites indicated higher bioactivity.
The in vitro chemical stability analysis results showed that both the POM matrix and the HA-g-PEG additive remain stable during the whole incubation time.
Importantly, after seven days of dynamic incubation, no formaldehyde was detected in all filtrates, which is crucial in biomedical applications, among others.
American Psychological Association (APA)
Król-Morkisz, Klaudia& Karaś, Ewelina& Majka, Tomasz M.& Pielichowski, Krzysztof& Pielichowska, Kinga. 2019. Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity. Advances in Polymer Technology،Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1122224
Modern Language Association (MLA)
Król-Morkisz, Klaudia…[et al.]. Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity. Advances in Polymer Technology No. 2019 (2019), pp.1-17.
https://search.emarefa.net/detail/BIM-1122224
American Medical Association (AMA)
Król-Morkisz, Klaudia& Karaś, Ewelina& Majka, Tomasz M.& Pielichowski, Krzysztof& Pielichowska, Kinga. Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity. Advances in Polymer Technology. 2019. Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1122224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122224