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Syamsyir2,c, W.A.W.Razali2,d. 1Faculty of Applied Sciences (Chemistry), Universiti Teknologi MARA Pahang, Lintasan Semarak, Bandar Jengka, Pahang, 26400 Malaysia 2Faculty of Applied Sciences (Physics), Universiti Teknologi MARA Pahang, Lintasan Semarak, Bandar Jengka, Pahang, 26400 Malaysia ahendrie@pahang.uitm.my, bmynameiskc_89@yahoo.com, csyamsyir@pahang.uitm.my, dwanaizuddin@pahang.uitm.edu.my Keywords: Bioactive glass, Strontium oxide, Simulated body fluid, Hydroxyapatite.
This shows that all the strontium containing bioactive glass samples have the same chemical structure.
Ferreira, Influence of strontium on structure, sintering and biodegradation behavior of CaO–MgO–SrO–SiO2–P2O5–CaF2 glasses, Acta Biomaterialia. 7 (2011) 4071–4080
Stevens, Materials characterisation and cytotoxic assessment of strontium-substituted bioactive glasses for bone regeneration, Journal of Materials Chemistry. 20(40) (2010) 8934–41

Experimental Ferrite nitrate (Fe(NO3)3·9H2O) and zinc nitrate (Zn(NO3)2·6H2O) were obtained from Shanghai Chemistry Reagent Company.
Poly (vinyl pyrrolidon) (PVP) and other surfactants, chemical purity, were purchased from Shanghai Chemistry Reagent Company.
The structure of the ZnFe2O4 nanoparticles was characterized by the XRD technique employing Cu-Kα (0.15418nm) radiation to generate diffraction patterns from powder crystalline samples at ambient temperature in a 2θ range of 20°–80°.
Meanwhile, The XRD patterns also show that the crystal structure of the as-synthesized nanoparticles is face-center spinel and the presence of the diffraction peaks are corresponding to the (220), (311), (222), (400), (422), (511) and (440) planes, which is consistent with the standard JCPDS card of zinc ferrite.

Molecular structure of β-cyclodextrin.
Results and Discussion The chemical structure of α-dextrin with possible water adsorption sites is shown in Fig. 1.
Introduction and General Overview of Cyclodextrin Chemistry..Chem.
Essentials of Carbohydrate Chemistry and Biochemistry.

But glassy materials have significant advantages over polymers: wider range of work temperatures, higher magnitudes of conductivity due to structure peculiarities.
This can be explained by formation of bonds Si–O–Sn–O–Si between distinct silicate chains in the glass structure.
Hartmann, From lithium to sodium: cell chemistry of room temperature sodium–air and sodium–sulfur batteries, Beilstein J.
Glass physics and chemistry. 43 (2017) 2, 146-150.

Study on corrosion behavior of A3 carbon steel in the manicipal sludge Xin-feng LONG1, a,*, Yi LIU2, b, Bo LOU3, c 1 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China 2 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China 3 School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China aemail: cexflong@scut.edu.cn , bemail: liuyi_4321@sina.com , cemail: loubo@scut.edu.cn Keywords: corrosion depth, metal corrosion, manicipal sludge.
Compared with corrosion product of samples after experiments of different moisture content of sludge, its structure is more closely, which is more conductive to slow the sludge corrosion effect on metal to some extent.
The distributions of corrosion product in fig.3 (b) fig.3(c) and fig.3 (d) show that the structure of metal corrosion product in acidic environment is simpler.

Malinkovich2 1Karpov Institute of Physical Chemistry, 105064 Moscow, Vorontsovo pole 10, Russia 2National University of Science and Technology “MISiS”, 119049 Moscow, Leninsky pr. 4, Russia a kochval@mail.ru Keywords: copolymer, piezoresponse force microscopy, poling process, relaxation dynamics.
Features of the structure of this class of polymers are reduced to the fact that they belong to the crystallization systems.
On the other hand, important the conformational structure these copolymer chains, which are substantially determined by the thermal history of the sample.
Nalva: Ferroelectric Polymers – Chemistry, Physics and Applications.

Introduction Up to now, due to the possibility of tailoring the polymer properties, such as molecular weight, molecular weight distribution as well as stereochemistry through cooperative effects between two metal centers, ligand structures and the nature of the bridge, a lot of attention was given to binuclear metallocene complexes of titanium and zirconium containing two equal or different metallocene units linked by various bridges[1-7].
The 1HNMR spectra of 1 shows both one singlet signal for the terminal cyclopentadienyl ligands, two triplets according to the A2B2 system of the bridging C5H4 groups, two triplets for the methylene group units SCH2 and CpCH2 in the expected ranges, thus proofing the proposed structure as well as the elemental analysis.
Jung, et al.: Journal of Organometallic Chemistry Vol.580(1999), p.90-97
Wang: Journal of Polymer Science Part A: Polymer Chemistry Vol.26(1988), p. 3089-3102.

The rubber molecular chain changed from linear structure into stereoscopic network structure, getting a fine physical and mechanical property.
Rubber Chemistry and Technology, 67(1994),p314
Rubber Chemistry and Technology, 61(1988),p340.

Modifying sodium bicarbonate for foaming polymers Sijia Yao1, a, Zhufa Zhou1, b, Feng Ye1, Zhe Tian1, Shumei Wang1 1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China asjyao15@gmail.com, bzhouzhufa@suda.edu.cn Keywords: foam agent; polymer; sodium bicarbonate; citric acid; modification Abstract: Sodium bicarbonate was modified with citric acid by solution coating method, and used to increase the foaming temperature and narrow the range of decomposition temperature.
The coating structure of the sodium bicarbonate's particle surface is formed by dissolved and recrystallized of the citric acid.
Conclusions Coating structure of sodium bicarbonate/citric acid can be obtained by solution coating method, citric acid can precipitated on the particle surface of sodium bicarbonate.
Witkamp, Industrial & engineering chemistry research, 2005, 44, 4272-4283

Hydrothermal Synthesis of Glutathione-capped ZnCdSe Alloyed Quantum Dots Yujun Zhao Department of Chemistry and Chemical Engineering, Heze University, Heze, 274015, P.
As Fig. 2(b) presented, all ZnCdSe QDs have a zinc blende cubic crystal structure, like the thiols-stabilized and GSH-stabilized CdTe QDs.
As the emission peak was red-shifted, the XRD peak positions at (111) plane were shifted towards larger angels that means the crystal structures were transformed from a CdSe lattice to a ZnSe lattice.
Rogach: The Journal of Physical Chemistry B Vol. 106 (2002), p. 7177 [5] Y.