Fabrication and Characterizations of Metallic Mg Containing PMMA-Based Partially Degradable Composite Bone Cements

Lin, Xiao; Chan, Adrian; Tan, Xiaoxiao; Yang, Huilin; Yang, Lei

doi:10.1007/s40195-018-0841-2

Cited by 7 publications

(5 citation statements)

References 45 publications

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“…The influences of temperature and strain rate on the hot compression deformation mechanism of composites were clear. Flow stress declined with increasing temperature and reduced strain rate, consistent with Wang et al [24] and Lin et al [25].…”

Section: Stress-strain Curves Of Tmcssupporting

confidence: 88%

Hot Deformation Behaviors in Ti-6Al-4V/(TiB + TiC) Composites

Lin

Huang

Dong

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

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Thermal compression testing was investigated using the Gleeble 3800 thermal simulator, and thermal deformation behavior of particle-reinforced titanium matrix composites (TMCs) was studied under deformation temperatures of 750-900 °C, strain rates of 0.001-1 s −1 , and experimental deformation of 60%. According to obtained flow stress curves, the hot deformation characteristics were analyzed. Based on the Arrhenius hyperbolic sinusoidal model, the constitutive equation at high temperature was established. Based on the theory of dynamic material models, a hot processing map of TMCs at high temperature was established, and the peak region of power dissipation rate and the instability region in the hot processing map were both determined. At the same time, the corresponding microstructures in the peak power dissipation rate and rheological instability regions were observed. The results showed that flow stress decreased with increasing deformation temperature and increased with increasing strain rate. The thermal deformation activation energy of titanium matrix composites was 301.8 kJ/mol. The Ti-6Al-4V/(TiB + TiC) composites possessed only one instability zone under high-temperature compression at a strain of 0.5, with corresponding temperatures at 750-840 °C and strain rates at 0.1-1 s −1 . The optimal thermal deformation parameters included corresponding temperatures of 830-880 °C and strain rates of 0.001-0.05 s −1 . The microstructures corresponding to optimal hot working parameters in processing maps were more homogeneous than the microstructures in the instability zone, including the distribution uniformity of reinforcement and the degree of dynamic recrystallization, and no instability phenomena including abnormal grain growth, microcracks or intensive fracture of reinforcements were found, indicating that the hot processing map had a positive guiding effect on the option of desirable material thermal-working parameters.

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Section: Stress-strain Curves Of Tmcssupporting

confidence: 88%

Hot Deformation Behaviors in Ti-6Al-4V/(TiB + TiC) Composites

Lin

Huang

Dong

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

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“…Lin and coworkers report that the bone/cement interfacial strength can be enhanced by partially degradable PMMA/Mg composite bone cement (PMC) [88]. This reinforcement is accomplished via the increase in the osteo-conductivity of PMMA and the enhancement of the mechanical interlocking between bone tissue and the porous PMMA surface.…”

Section: Applications Of High Molecular Weight Pmmamentioning

confidence: 99%

Development of Synthesis and Application of High Molecular Weight Poly(Methyl Methacrylate)

2022

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Poly(methyl methacrylate) (PMMA) is widely used in aviation, architecture, medical treatment, optical instruments and other fields because of its good transparency, chemical stability and electrical insulation. However, the application of PMMA largely depends on its physical properties. Mechanical properties such as tensile strength, fracture surface energy, shear modulus and Young’s modulus are increased with the increase in molecular weight. Consequently, it is of great significance to synthesize high molecular weight PMMA. In this article, we review the application of conventional free radical polymerization, atom transfer radical polymerization (ATRP) and coordination polymerization for preparing high molecular weight PMMA. The mechanisms of these polymerizations are discussed. In addition, applications of PMMA are also summarized.

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“…The samples with a small amount of GnP resulted in no agglomerates, as can be seen in PGH-1 and PGH-2 samples images as observed in the earlier investigation also of polymer matrix nanocomposite. 73,79 The PGH-3 sample has the highest GnP and HA content among all four samples, showing weak dispersion inside the PMMA matrix, resulting in voids and poor dispersion. With high HA content, the HA dispersion in the HA-GnP-PMMA cement cross-section became less uniform, as shown in the PGH-3 sample.…”

Section: Hr-sem Analysis Of the Fractured Samplementioning

confidence: 99%

Incorporation of graphene nanoplatelets/hydroxyapatite in PMMA bone cement for characterization and enhanced mechanical properties of biopolymer composites

Dubey

Kesarwani

Verma

2022

Journal of Thermoplastic Composite Materials

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Polymethylmethacrylate (PMMA) in powder form is broadly used as bone cement in orthopedic applications due to its expanded mechanical, physical, and chemical properties. In this study, a hybrid PMMA biopolymer nanocomposite is developed by the supplement of graphene nanoplatelets (GnP) and hydroxyapatite (HA) powders of nano-size with combined loadings ranging from 0.5 to 2.5 weight %. Both materials were applied uniformly to reinforce commercial bone cement made of polymethylmethacrylate. The findings showed that adding 1.5 wt.% of combined HA and GnP nanoparticles to the powder of PMMA bone cement resulted in the expansion of flexural strength by 49.28%, the flexural modulus by 30.80%, the compression strength by 31.7%, and the compression modulus by 57.41%. The nanocomposite was characterized using Energy Dispersive X-Ray Analysis (EDS), Fourier transforms infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) to study the distribution of reinforced nanoparticles. Scanning Electron Microscopy (SEM) analysis of the prepared samples and fractured surface shows the proper dispersion of nanofillers into the matrix phase and possible reasons behind fracture. The inclusion of GnP and HA in the PMMA enhances the mechanical performances required for biomedical components. Also, the SEM findings of the mechanically tested broken surface of the polymer nanocomposite samples demonstrated the feasibility of the proposed material for joint replacement surgical procedures and orthopedic implants.

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Fabrication and Characterizations of Metallic Mg Containing PMMA-Based Partially Degradable Composite Bone Cements

Cited by 7 publications

References 45 publications

Hot Deformation Behaviors in Ti-6Al-4V/(TiB + TiC) Composites

Hot Deformation Behaviors in Ti-6Al-4V/(TiB + TiC) Composites

Development of Synthesis and Application of High Molecular Weight Poly(Methyl Methacrylate)

Incorporation of graphene nanoplatelets/hydroxyapatite in PMMA bone cement for characterization and enhanced mechanical properties of biopolymer composites

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