Effect of temperature and pressure of hot pressing on the mechanical properties of PP–HA bio-composites

Younesi, Mousa; Bahrololoom, M.E.

doi:10.1016/j.matdes.2009.03.011

Cited by 41 publications

(30 citation statements)

References 22 publications

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“…Similarly to the tensile strength results, the studies by Younesi and Bahrololoom [88] and Zheng et al [89] show the highest stiffness of the HA/polymer composites category, with composites that are much stiffer than cancellous bone but not as stiff as cortical bone (Table 1). Younesi and Bahrololoom and Zheng et al used 60 and 33 wt.% HA, respectively.…”

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 54%

“…Specimens prepared by Younesi and Bahrololoom [88] and Zheng et al [89] are at the upper bound for tensile modulus and strength plots (Fig. 6).…”

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 86%

“…They tested polypropylene/HA and PDLLA/ HA composites, respectively. These data do not span a large range; the strength for the polypropylene/HA composites was in the range 24-40 MPa and that for the PDLLA/HA composites in the range 37-45 MPa [88,89]. Results in Clarke et al [90] are also in the upper bound.…”

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 89%

“…[70] Bulk HA, b-TCP à 290-310 16 Pramanik et al [64] Bulk HA NR 42 Auger et al [117] Bulk HA/oxide NR 27-36 Cordell et al [58] Bulk BCP 1-10, 2-15 40 Yao et al [85] HA scaffold 20-260 34-52 Takayama and Todo [86] HA/PLLA/LTI NR NR Wong et. [116] HA/strontium/PEEK NR NR Kim et al * [115] Calcium silicate/PEEK NR NR Cui et al [80] HA/PLGA 1-50, 100-300 [84][85][86][87][88][89][90][91][92][93] This table also serves as the legend to Fig. 5.…”

Section: Ha Scaffold Properties In Bendingmentioning

confidence: 99%

“…This is a factor of 10 lower than the lower limit of stiffness Table 5. [62] Bulk HA NR 44 Younesi and Bahrololoom [88] HA/polypropylene NR NR Clarke et al [90] HA/collagen NR NR Zheng et al [89] HA/PDLLA/collagen gel NR NR Marra et al [44] HA/PLGA/PCL 150-250 80 Lei et al [92] HA/PPSC NR NR Boissard et al [93] HA/PUR 83-97 71-94 Prabhakaran et al [91] HA/PLLA/collagen NR NR Pramanik et al [64] Bulk HA NR 42 Wahl et al [94] HA/collagen 40-140 87-95 This table also serves as the legend to Fig. 6 [92].…”

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 99%

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A review of the mechanical behavior of CaP and CaP/polymer composites for applications in bone replacement and repair

2011

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Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 54%

“…Specimens prepared by Younesi and Bahrololoom [88] and Zheng et al [89] are at the upper bound for tensile modulus and strength plots (Fig. 6).…”

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 86%

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 89%

Section: Ha Scaffold Properties In Bendingmentioning

confidence: 99%

Section: Tensile Strength and Modulus Of Cap/polymer Composite Scaffomentioning

confidence: 99%

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A review of the mechanical behavior of CaP and CaP/polymer composites for applications in bone replacement and repair

2011

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Bioinspired Hydroxyapatite/Poly(methyl methacrylate) Composite with a Nacre‐Mimetic Architecture by a Bidirectional Freezing Method

et al. 2015

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Using a bidirectional freezing technique, combined with uniaxial pressing and in situ polymerization, "nacre-mimetic" hydroxyapatite/poly(methyl methacrylate) (PMMA) composites are developed by processing large-scale aligned lamellar ceramic scaffolds. Structural and mechanical characterization shows "brick-and-mortar" structures, akin to nacre, with interesting combinations of strength, stiffness, and work of fracture, which provide a pathway to making strong and tough lightweight materials.

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3D‐Printed Strong Dental Crown with Multi‐Scale Ordered Architecture, High‐Precision, and Bioactivity

et al. 2021

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Mimicking the multi-scale highly ordered hydroxyapatite (HAp) nanocrystal structure of the natural tooth enamel remains a great challenge. Herein, a bottom-up step-by-step strategy is developed using extrusion-based 3D printing technology to achieve a high-precision dental crown with multi-scale highly ordered HAp structure. In this study, hybrid resin-based composites (RBCs) with "supergravity +" HAp nanorods can be printed smoothly via direct ink writing (DIW) 3D printing, induced by shear force through a custom-built nozzle with a gradually shrinking channel. The theoretical simulation results of finite element method are consistent with the experimental results. The HAp nanorods are first highly oriented along a programmable printing direction in a single printed fiber, then arranged in a layer by adjusting the printing path, and finally 3D printed into a highly ordered and complex crown structure. The printed samples with criss-crossed layers by interrupting crack propagation exhibit a flexural strength of 134.1 ± 3.9 MPa and a compressive strength of 361.6 ± 8.9 MPa, which are superior to the corresponding values of traditional molding counterparts. The HAp-monodispersed RBCs are successfully used to print strong and bioactive dental crowns with a printing accuracy of 95%. This new approach can help provide customized components for the clinical restoration of teeth.

show abstract

Effect of temperature and pressure of hot pressing on the mechanical properties of PP–HA bio-composites

Cited by 41 publications

References 22 publications

A review of the mechanical behavior of CaP and CaP/polymer composites for applications in bone replacement and repair

A review of the mechanical behavior of CaP and CaP/polymer composites for applications in bone replacement and repair

Bioinspired Hydroxyapatite/Poly(methyl methacrylate) Composite with a Nacre‐Mimetic Architecture by a Bidirectional Freezing Method

3D‐Printed Strong Dental Crown with Multi‐Scale Ordered Architecture, High‐Precision, and Bioactivity

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