Growth of calcium phosphate on surface-modified cotton

Mucalo, Michael R.; Yokogawa, Yoshiyuki; Toriyama, Motohiro; Suzuki, Takahiro; Kawamoto, Yukari; Nagata, Fukue; Nishizawa, Kaori

doi:10.1007/bf00121284

Cited by 59 publications

(55 citation statements)

References 8 publications

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“…Utilizing the modified biomimetic process, an apatite layer was successfully formed on the entire surface of a polymer even in the form of fibers. 12),13) Extensive and systematic research based on this modified biomimetic process has proven that the induction period required for the heterogeneous apatite nucleation strongly correlates with the type, density, 11) and arrangement 13) of the surface functional groups, and the calcium ion release from the polymer into a supersaturated solution, 12) which is in good agreement with the previous fundamental results 49),50),54), 55) and recent results on other functional groups: COOH, 14), 15) PO3H2, 16) and SO3H.…”

Section: Biomimetic Process For Apatite Coatingsupporting

confidence: 89%

Development of apatite-based composites by a biomimetic process for biomedical applications

Oyane

2010

J. Ceram. Soc. Japan

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A new biomimetic process for apatite coating on polymeric materials has been developed. In this process, the surface of a polymer is modified with amorphous calcium phosphate (ACP), and then the polymer is immersed in a supersaturated calcium phosphate solution. The new biomimetic process has the advantages of safety, simplicity, and applicability to various types and forms of polymeric materials. By adding a biomolecule (such as protein, antibacterial agent, or DNA) to the supersaturated solution, immobilization of a biomolecule into the apatite coating while retaining the intrinsic biological activity of the biomolecule is possible. As a result of this, the base polymer would possess biological activity to control cell behaviors (such as adhesion, proliferation, and differentiation), in addition to good biocompatibility owing to the apatite. Hence, the new biomimetic process and the resulting composites have a wide variety of biomedical applications including tissue engineering scaffolds, percutaneous devices, and gene delivery carriers.

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Section: Biomimetic Process For Apatite Coatingsupporting

confidence: 89%

Development of apatite-based composites by a biomimetic process for biomedical applications

Oyane

2010

J. Ceram. Soc. Japan

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“…[1][2][3] Many bioactive biomaterials that have been developed based on inorganic materials such as titanium, 4,5 glass, 6 or carbon 7 or with organic materials such as synthetic [8][9][10][11][12] or naturally occurring polymers 13,14 contain apatite to obtain osteoconductivity as well as mechanical strength. Fiber and fabric forms of organic materials such as aromatic polyamide, 15 polyethylene terephthalate, 16 cotton, 17,18 and chitin 19 have also been used in processing composites with the apatite. Shikinami and Kawarada proposed a unique way to fabricate a novel biomaterial-a three-dimensional fabric made of hydroxyapatite and polyethylene-biologically and mechanically biocompatible and durable enough for long-term in vivo implantation.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of apatite deposited on silk fabric using an alternate soaking process

Furuzono¹,

Taguchi²,

Kishida³

et al. 2000

J. Biomed. Mater. Res.

106

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Apatite-deposited silk fabric composite materials were developed using a new alternate soaking process. The characteristics of deposited apatite were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR), and X-ray photoelectron spectroscopy (XPS). Apatite weight increased with alternating soaking in a calcium solution [200 mM aqueous calcium chloride solution buffered with tris(hydroxymethyl) aminomethane and HCl (pH 7.4)] and a phosphate solution (120 mM aqueous disodium hydrogenphosphate) changed every hour. SEM showed that apatite deposited after 21 or more repeated soakings was over 20 microm thick. XRD showed that with alternate soakings, the apatite crystals deposited on silk fabric elongated along the c axis. FTIR and XPS indicated the existence of carbonate, HPO(4)(2-), and Na(+) ions in addition to constituent ions of hydroxyapatite. A loss of HPO(4)(2-) and Na(+) ions in the deposit upon further soaking might be associated with an increasing apatite crystallinity. Apatite deposited on silk by the alternate soaking process was a deficient apatite containing carbonate, HPO(4)(2-), and Na(+) ions as in a natural bone tissue. Thus, this apatite-silk composite material might be potentially bioactive.

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“…Phosphorylation originally was used for making cation exchange material for Ca 2+ , 27 and then it successfully was used by M. Mucalo et al 28,29 and S.H. Li 30 in the biomedical sphere for growing calcium phosphate.…”

Section: Fast Formation Of An Apatite Layer On 3d C/cmentioning

confidence: 99%

“…In the second mechanism, having the precalcification process follow phosphorylation is necessary, as was verified in some previous studys. [28][29][30] After immersion in BM for 20 h, a layer of calcium phosphate was formed on the phosphorylated and precalcified 3D C/C samples. TF-XRD results demonstrate that this Ca-P mineral formed from BM is apatite.…”

Section: Fast Formation Of An Apatite Layer On 3d C/cmentioning

confidence: 99%

Collagen/apatite coating on 3-dimensional carbon/carbon composite

Zheng

Liu

et al. 1998

J. Biomed. Mater. Res.

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A three-dimensional carbon/carbon composite (3D C/C) was studied as potential bone-repairing material; its major mechanical properties were found to be closer to those of human bone than other common bone-repairing materials available. In vitro calcification tests revealed that as-received 3D C/C is almost bioinert in simulated body fluid (SBF) over an immersion period of 4 weeks. To improve the bioactivity of 3D C/C, surface modification was accomplished through two practical routes: (1) grafting with polyethylene glycol (PEG) and (2) phosphorylation and precalcification. After grafting with alpha, omega di(aminopropyl) polyethylene glycol 800 (NH2-PEG-NH2), a continuous layer of calcium phosphate was formed on the surface of 3D C/C in SBF after 4 weeks. Phosphorylated 3D C/C samples have the ability to induce apatite precipitation after precalcification in a saturated Ca(OH)2 solution for 1 week. To speed up the coating process, a calcification solution with collagen was developed in which a collagen/apatite coating layer can be formed on 3D C/C in 9 h in ambient conditions.

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Growth of calcium phosphate on surface-modified cotton

Cited by 59 publications

References 8 publications

Development of apatite-based composites by a biomimetic process for biomedical applications

Development of apatite-based composites by a biomimetic process for biomedical applications

Preparation and characterization of apatite deposited on silk fabric using an alternate soaking process

Collagen/apatite coating on 3-dimensional carbon/carbon composite

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