Biological behavior of bioactive glasses and their composites

Zahid, Saba; Shah, Asma Tufail; Jamal, Arshad; Chaudhry, Aqif Anwar; Khan, Abdul Samad; Khan, Ather Farooq; Muhammad, Nawshad; Rehman, Ihtesham Ur

doi:10.1039/c6ra07819b

Cited by 30 publications

(14 citation statements)

References 158 publications

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“…The solidification of a liquid into an amorphous nonequilibrium glass is one of the most ubiquitous processes in nature, having also a remarkable scientific and technological relevance. Metallic alloys [1], bioactive materials [2], ceramics [3], polymers [4] and colloidal suspensions [5][6][7][8][9] are common examples of materials that under certain thermodynamic conditions are able to display a wide variety of non-crystalline structures and dynamically arrested states with solid-like properties that, so far, are not completely understood.…”

Section: Introductionmentioning

confidence: 99%

Glassy dynamics in asymmetric binary mixtures of hard spheres

et al. 2019

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The binary hard-sphere mixture is one of the simplest representations of a many-body system with competing time and length scales. This model is relevant to fundamentally understand both the structural and dynamical properties of materials, such as metallic melts, colloids, polymers and bio-based composites. It also allows us to study how different scales influence the physical behavior of a multicomponent glass-forming liquid; a question that still awaits a unified description. In this contribution, we report on distinct dynamical arrest transitions in highly asymmetric binary colloidal mixtures, namely, a single glass of big particles, in which the small species remains ergodic, and a double glass with the simultaneous arrest of both components. When the mixture approaches any glass transition, the relaxation of the collective dynamics of both species becomes coupled. In the single glass domain, spatial modulations occur due to the structure of the large spheres, a feature not observed in the two-glass domain. The relaxation of the self dynamics of small and large particles, in contrast, become decoupled at the boundaries of both transitions; the large species always displays dynamical arrest, whereas the small ones appear arrested only in the double glass. Thus, in order to obtain a complete picture of the distinct glassy states, one needs to take into account the dynamics of both species.

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Section: Introductionmentioning

confidence: 99%

Glassy dynamics in asymmetric binary mixtures of hard spheres

et al. 2019

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“…1 Specifically, bioceramics have shown their relatively better biocompatibility since their physicochemical and biological properties such as osteoconductivity and bioactivity are very similar to those of biological tissues. [2][3][4] Due to inherent properties of brittleness, bioceramics have been incorporated with polymeric network, resulting in increasing some degree of dental regeneration. 5,6 Regeneration of lost tooth supporting structures is a highly orchestrated biological process involving a cellular and molecular interplay.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis and evaluation of type 1 collagen–apatite composites for dental tissue regeneration

et al. 2018

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The aim was to develop an economical and biocompatible collagen-based bioactive composite for tooth regeneration. Acid-soluble collagen was extracted and purified from fish scales. The design was innovated to molecularly tailor the surface charge sites of the nano-apatite providing chemical bonds with the collagen matrix via microwave irradiation technique. The obtained collagen was identified by sodium dodecyl sulfate polyacrylamide gel electrophoresis analysis. The composites were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis/differential scanning calorimetry, and scanning electron microscopy. MC3T3-E1 cell lines were used to assess the biological effects of these materials by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetra zolium bromide (MTT) assay. Indirect contact test was performed by extracting representative elutes in cell culture media and sulforhodamine B analysis was performed. Chorioallantoic membrane assay was conducted to define the new vessels formation behavior. The purity of collagen extracts was determined and showed two α-chains, i.e. the characteristic of type I collagen. Fourier transform infrared spectroscopy showed the characteristic peaks for amide I, I, III, and phosphate for collagen and composites. Scanning electron microscopy images showed three-dimensional mesh of collagen/apatite nano-fibers. Nontoxic behavior of composites was observed and there were graded and dose-related effects on experimental compounds. The angiogenesis and vessels formation behavior were observed in bioactive collagen composite. The obtained composites have potential to be used for tooth structure regeneration.

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“…It is due to the presence of inorganic substances in the OPEFB fiber consequently increases in the thermal stability of the composite. 39 Generally, the thermal stability of the polymer composite could enhance by the incorporation of natural fibers into polymer matrix. [40][41]…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Oil palm microfiber-reinforced handsheet-molded thermoplastic green composites for sustainable packaging applications

Hermawan

Hazwan

Gopakumar

et al. 2019

Progress in Rubber, Plastics and Recycling Technology

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The forestry and agricultural market have been perceiving outstanding growth due to the advantages of green composites, such as cost effective in nature, environment friendly, excellent mechanical properties, and so on. Various researchers had studied the reinforcement efficiency of various natural fibers in the diverse polymer matrices. Herein, we reported the characterization of microfiber handsheet-molded thermoplastic green composites developed from the combination of oil palm empty fruit bunch (OPEFB)-based microfiber pulp as filler and polyester PP based as matrix. Refined alkaline extracted OPEFB pulp fiber was mixed at different layered composition of the composite of grafted polypropylene. The physical properties and mechanical properties were conducted according to the ASTM standard and showed substantial improvement of the handsheet-molded composite. The scanning electron microgram showed that, as the addition of OPEFB fiber loading increased, there was improved interfacial bonding except for 50% fiber loading which experience fiber pullout. The result also showed improved thermal stability compared with the neat composite. This study will be an effective platform to develop the packaging materials using polymer handsheet composite. [Formula: see text]

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Biological behavior of bioactive glasses and their composites

Abstract: This review summarizes current developments in improving the biological behavior of bioactive glasse and their composites.

Cited by 30 publications

References 158 publications

Glassy dynamics in asymmetric binary mixtures of hard spheres

Glassy dynamics in asymmetric binary mixtures of hard spheres

Microwave-assisted synthesis and evaluation of type 1 collagen–apatite composites for dental tissue regeneration

Oil palm microfiber-reinforced handsheet-molded thermoplastic green composites for sustainable packaging applications

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