Disclosing the role of surface and bulk erosion on the viscoelastic behavior of biodegradable poly(ε‐caprolactone)/poly(lactic acid)/hydroxyapatite nanocomposites

Shojaei, Shahrokh; Nikuei, M.; Goodarzi, Vahabodin; Hakani, Mahsa; Khonakdar, H A; Saeb, Mohammad Reza

doi:10.1002/app.47151

Cited by 14 publications

(11 citation statements)

References 30 publications

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“…This happens because PLA is relatively hydrophobic, hence the PLA surface is unable to chemically bond with the HA surface [ 41 ]. The findings of this study are consistent with Shojaei et al [ 39 ]. According to the researchers, no new peaks in the biocomposite spectrum were discovered due to the limited contact between the two polymers, which are fully incompatible [ 39 ].…”

Section: Resultssupporting

confidence: 94%

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Characterization of PLA/PCL/Green Mussel Shells Hydroxyapatite (HA) Biocomposites Prepared by Chemical Blending Methods

et al. 2022

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Recently, there has been an increase in the number of studies conducted on the process of developing hydroxyapatite (HA) to use in biocomposites. HA can be derived from natural sources such as bovine bone. The HA usage obtained from green mussel shells in biocomposites in this study will be explored. The research goal is to investigate the composition effect of biomaterials derived from polycaprolactone (PCL), polylactic acid (PLA), as well as HA obtained from green mussel shells with a chemical blending method on mechanical properties and degradation rate. First, 80 mL of chloroform solution was utilized to immerse 16 g of the PLA/PCL mixture with the ratios of 85:15 and 60:40 for 30 min. A magnetic stirrer was used to mix the solution for an additional 30 min at a temperature and speed of 50 °C and 300 rpm. Next, the hydroxyapatite (HA) was added in percentages of 5%, 10%, and 15%, as well as 20% of the PLA/PCL mixture’s total weight. It was then stirred for 1 h at 100 rpm at 65 °C to produce a homogeneous mixture of HA and polymer. The biocomposite mixture was then added into a glass mold as per ASTM D790. Following this, biocomposite specimens were tested for their density, biodegradability, and three points of bending in determining the effect of HA and polymer composition on the degradation rate and mechanical properties. According to the findings of this study, increasing the HA and PLA composition yields a rise in the mechanical properties of the biocomposites. However, the biocomposite degradation rate is increasing.

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Section: Resultssupporting

confidence: 94%

“…In contrast, the peak at 2860–2880 cm −1 indicates a CH 3 symmetrical stretch. Moreover, the C=O stretch and C−O stretch are examined at 1670–1760 cm −1 and 1000–1100 cm −1 , accordingly [ 27 , 39 , 40 ]. According to the FTIR test results, PLA, PCL, and HA did not produce new peaks in the spectrum.…”

Section: Resultsmentioning

confidence: 99%

Characterization of PLA/PCL/Green Mussel Shells Hydroxyapatite (HA) Biocomposites Prepared by Chemical Blending Methods

et al. 2022

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“…A peak at a wavelength of 2915–2940 cm −1 implies CH 2 asymmetric stretch, whereas the peak at 1346–1480 cm −1 exhibits CH 3 symmetric stretch. In addition, the C=O stretch and the C–O stretch are noticed at 1670–1760 cm −1 and 1000–1100 cm −1 , respectively [ 40 , 41 , 42 , 43 ]. In the case of the PCL/PLA blend, a spectrum consisting of PCL and PLA was obtained.…”

Section: Resultsmentioning

confidence: 99%

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

et al. 2022

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Polylactic acid (PLA) and polycaprolactone (PCL) are synthetic polymers that are extensively used in biomedical applications. However, the PLA/PCL blend produced by ball milling, followed by pressure compaction and sintering, has not been extensively explored. The goal of this research is to investigate the effect of the composition of biomaterials derived from PLA and PCL prepared by ball milling, followed by pressure compaction and sintering, on mechanical and physical properties. PCL and PLA with various concentrations were blended utilizing a ball milling machine for 2 h at an 80-rpm rotation speed. The obtained mixture was placed in a stainless steel 304 mold for the compacting process, which uses a pressure of 30 MPa to create a green body. The sintering procedure was carried out on the green body created at 150 °C for 2 h using a digital oven. The obtained PLA/PCL blend was tested using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), density, porosity, and three-point bending. Following the interaction between PCL and PLA in the PLA/PCL blend, the FTIR spectra and XRD diffractograms obtained in this work revealed a number of modifications in the functional groups and crystal phase. The 90PLA specimen had the best mechanical properties, with a maximum force and displacement of 51.13 N and 7.21 mm, respectively. The porosity of the PLA/PCL blend decreased with increasing PLA concentration so that the density and flexural properties of the PLA/PCL blend increased. The higher PCL content decreased the stiffness of the PLA molecular chain, consequently reducing its flexural properties.

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“…Thanks to these remarkable features, PLA is one of the most widely utilized biodegradable and biocompatible plastics used in the industrial packaging field or in the biocompatible/bioabsorbable medical device market. [14][15][16][17][18][19][20][21] Owing to its promising properties, PLA has been used in different applications such as automotive, diapers, water and milk bottles, barriers for sanitary products and food packaging. [3,[22][23][24][25][26][27] Despite its glorious advantages, PLA suffers from some disadvantages such as low thermal stability, brittleness, and poor gas barrier properties that limit its use.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the mechanical, thermal, and antibacterial properties of poly (lactic acid)/silicone rubber blends reinforced with (3‐aminopropyl) triethoxysilane‐functionalized titanium dioxide nanoparticles

et al. 2022

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Poly (lactic acid)/silicone rubber (PLA/SR) blends were reinforced with (3-aminopropyl) triethoxysilane-functionalized titanium dioxide nanoparticles, and the effect of the virgin (TDO) and functionalized (FTDO) nanoparticles was investigated in the presence and absence of compatibilizer. The results demonstrated that the functionalization of TDO had no negative effect on the morphology of the blends, and no aggregation was seen in the blends containing TDO and FTDO. Furthermore, nanoparticles were localized at the interface of PLA and SR. Adding TDO in the PLA/SR blends increased the mechanical properties. The same trend was observed after incorporating the compatibilizer and FTDO.Additionally, a good agreement was seen between the theoretical and experimental mechanical properties values. Moreover, introducing SR diminished the crystallinity of PLA, and further reduction was observed by adding TDO, FTDO, and compatibilizer. Also, the modification of TDO did not affect the crystallinity of the blends. Incorporating 1 and 2 phr TDO to the blends increased the thermal stability while diminishing with 3 phr TDO. In addition, FTDO improved thermal stability. The antibacterial test indicated that the higher nanoparticles content, the better the antibacterial properties.

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Disclosing the role of surface and bulk erosion on the viscoelastic behavior of biodegradable poly(ε‐caprolactone)/poly(lactic acid)/hydroxyapatite nanocomposites

Cited by 14 publications

References 30 publications

Characterization of PLA/PCL/Green Mussel Shells Hydroxyapatite (HA) Biocomposites Prepared by Chemical Blending Methods

Characterization of PLA/PCL/Green Mussel Shells Hydroxyapatite (HA) Biocomposites Prepared by Chemical Blending Methods

Investigating the Effect of PCL Concentrations on the Characterization of PLA Polymeric Blends for Biomaterial Applications

Evaluating the mechanical, thermal, and antibacterial properties of poly (lactic acid)/silicone rubber blends reinforced with (3‐aminopropyl) triethoxysilane‐functionalized titanium dioxide nanoparticles

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