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Preparation and Bioactivity of Mesoporous Bioactive Glasses with Different Phosphorus Contents Yuan Cao 1,a , Li Zhang 1,b, Yanqin Xu 1,c, Xiao Wang 1,d and Bolin Liu 1,e 1 College of Chemistry & Chemical Engineering, Chongqing University, Chongqing, 400044, China a caoyuan@cqu.edu.cn, b rain_z2008@163.com, c xuyanqin666@163.com, d tobeaflyingbird@163.com, e liubolin6@yahoo.cn Keywords: phosphorus, bioactive glass, mesoporous.
Mesoporous materials have the attractive features, which are large surface area, ordered mesoporous structure, tunable and uniformitarian pore size, well-defined surface property for modification [3].
Mesoporous materials are mainly dependent on the use of surfactants as structure directing agents for the inorganic component to form channel, thus creating highly ordered mesoporous [6].
In this paper, we have successfully prepared mesoporous bioactive glasses [6-8] with two different chemical compositions by using EO20PO70EO20 (P123) as structure-directing agents through an evaporation-induced self-assembly (EISA) process [8], studying the influence of the phosphorus content on the pore architecture and bioactivity of MBG.
The shape of the isothems for all MBGs corresponds to type , typical of a mesoporous structure.

In general, the rate of degradation depends on the structure of the particular polymers in each type of plastic, instead of whether they have been derived from natural sources or petrochemicals.
The surface structure was observed by scanning electron microscope (JEOL model JSM-5410LV, JAPAN) at 15KV acceleration to determine the morphology of the starch granules.
Observation of surface structure To determine the morphology of starch granules and the PBAT/starch blends, the surface structure was observed by scanning electron microscope (JEOL model JSM-5410LV, JAPAN) at 15KV acceleration.
Journal of Polymer Science Part A: Polymer Chemistry. 2002;40(12):2003-14

Steins 1,d Institute of Inorganic Chemistry of the Riga Technical University, Miera iela 34, Salaspils, LV-2169, Latvia a ilmars@nki.lv, bnatalja.zilinska@inbox.lv, ckrastins.janis@navigator.lv, dints03@inbox.lv Keywords: SiAlON, Nanocomposites, Sintering, Spark plasma sintering, Grain size, Mechanical properties.
It is possible to obtain dense ceramic materials with relatively fine-grained structure (200-300 nm) from nanosized powders at relatively low temperatures (1400 - 1600°C) with good mechanical properties.
It is possible to obtain dense SiAlON materials with relatively fine-grained structure (200-300 nm) with good mechanical properties from nano-sized powder using pressure-less sintering and the SPS method at relatively low temperatures: by pressure-less sintering - 1520-1560°C (in some cases - begining with 1450 o C), and by SPS sintering - 1400-1500°C for α-SiAlON and up to 1600°C for samples outside of the α-SiAlON region.

We studied the structure and optical properties of glasses under the heat treatment below and above glass transition temperature.
Thereby analysis of Raman spectra showed that introduction of gold has no effect on the phosphate network structure while introduction of 1 mol.% of Er2O3 leads to slight depolymerization of phosphate network.
Inorganic chemistry 56.19 (2017): 12054-12066

This research presents experimental and theoretical studies of interaction processes of fine- dispersed batch from mineral raw materials with a highly concentrated energy source, aimed at obtaining new information about the basic patterns of the formation, structure and composition of resulting granules of functional materials, such as welding fused fluxes.
In this work it is necessary to research the impact of a highly concentrated heat source on mineral raw materials batch that is melted in a short time into drops that form granules of fused welding flux of required morphology, structure and composition during crystallization under surface tension forces (spheroidizing [15]) in weightlessness (falling) state.
Rymuszka, Surface properties of glass plates activated by air, oxygen, nitrogen and argon plasma, Glass Physics and Chemistry, №6 (42) (2016) 6 535-541

Impacts of wetting agents such as CaLS, NP-7 and MC on density separation of plastics are related not only to the molecular structure of plastic materials but also to the separating media.
The impacts of wetting agents such as CaLS, NP-7 and MC on density separation of plastics are related not only to the molecular structure of plastic material but also to the separating media.
Chinese Journal of Applied Chemistry, 2008, 25(4): 401-404.

Graphite anode is an electrode with a stable structure and low potential voltage which comes with a low cost [29].
This functional group make up a hydrophilic molecule, polarized in its structure and capable to electro-statistically bind through its hydrogen and oxygen atoms, allowing it to dissolve more easily in water.
Sutanto, Geothermal silica waste as sustainable amorphous silica source for the synthesis of silica xerogels, Rasayan Journal of Chemistry. 13 (2020) 1692–1700
Patwardhan, A review of magnesiothermic reduction of silica to porous silicon for lithium-ion battery applications and beyond, Journal of Materials Chemistry A. 6 (2018) 18344–18356
Ilegems, in "Progress in Solid-State Chemistry, Plenum, 1958

Clay minerals possess nanometric particle sizes, being classified as crystalline silicates with structure in layers or lamellar and crystalline silicates with fibrous structure.
X-ray diffraction (XRD), X-ray fluorescence (XRF), thermogravimetric (TG) and differential thermal analysis (DTA), Fourier transform infrared (FTIR) and transmission electron microscopy (TEM) were used to characterize the clay fraction previously separated using NH4OH aqueous solution and submitted to physical-chemistry treatment in an ethylene glycol atmosphere.
Its general structure is composed of silicate sheets bonded to aluminum oxide/hydroxide layers called gibbsite layers [2, 3, 4].
After calcination at 500oC, the crystalline structure was destroyed.

Structure characterization The samples were characterized using Philips PW 1700 X-ray diffractometer (XRD) and Philips EM420 transmission electron microscope (TEM).
Experiment results and discussion Structure characterization Fig.1 shows the XRD patterns of the synthetic samples.
The three diffraction peaks correspond to the diffraction peaks of cube NiO (111), (220), (311) planes in the standard card, which indicates that the sample is cubic structure with high purity.
Fig.2 is the selected area electron diffraction pattern of NiO under TEM, which shows that NiO has good crystalline structure.
Chinese Journal of Inorganic Chemistry，1997, 13 (1) : 43-47．

Typical advantages cited for using CFRP in aircraft structures include higher strength-to-weight ratios, plus enhanced corrosion and fatigue properties when compared to typical metallic aerospace materials.
This trend results principally due to differences in the chemical structures of the types of sample and also due to the higher entanglement density in the C/BMI segments as compared to the C/BMI segments .
The “apparent double Tgs” of C/BMI-16 reveal the significant changes of the morphological structure within the composite sample.For the upper glass transition temperature (TgU)，it is expected to arise due to the increasing of induce-heat-transfer of the BMI molecules by the increasing lightning current to 16KA.
Groeninckx et al [17] reported the similar phenomena of morphological structure in a serial of polymers which were dependent on previous load historis [18] and thermal histories [19].
Sci., Part A: Polymer chemistry.