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The chemical shift of all the samples from the structure of natural rubber (cis-1,4 polyisoprene) was observed.
The cis-1,4 polyisoprene chemical structure of natural rubber appeared in the spectra of 1H-NMR.
Chemical structure C-H δ* (ppm) Chemical structure C-H 0.9 Alkyl (methyl) 1.3 Alkyl (ethyl) 1.5 – 2 Alkyl (methine) 2.5 Alkynyl 5 – 5.3 Vinylic 9.7 Aldehyde *Chemical shift is the resonant frequency of a nucleus relative to a standard in a magnetic field, usually expressed in parts per million (ppm).
Perez, Natural rubber foams with anisotropic cellular structures: Mechanical properties and modeling, Ind.
Thomas, Chemistry associated with natural rubber–graphene nanocomposites and its effect on physical and structural properties, Ind Crops Prod. 74 (2015) 792–802

The article presents selected results of examination of melt flow rate (MFR) and microscopic structure.
For a porous material of appropriate structure and quality must be carefully selected blowing agent, depending on processing conditions, type of polymer, and the assumed parameters of the final product.
The article presents selected results of melt flow rate (MFR) and microscopic structure.
Dulebová, Porophors used in the extrusion process, Chemistry and Chemical technology 7 (2013) 113-118
Garbacz, Structure and properties of cellular thin-walled cable coatings, Polimery 57 (2012) 865-868

China 3Department of Chemistry, Kunming University, Yunnan, Kunming 650214, PR China a hai.wang.ucl@gmail.com Keywords: Nanostructure, thin films, optical properties, phase transition Abstract.
The morphologies, structures and optical properties of CuPc films were characterized by scanning electron microscopy, X-ray diffraction and UV-Visible spectroscopy.
The morphology and crystal structure of CuPc thin films were characterized by HITACHI S3400N and Rigaku TTR III respectively.
Heutz, Ultralong copper phthalocyanine nanowires with new crystal structure and broad optical absorption, ACS Nano. 4 (2010) 3921-3926
Luth, The electronic structure of GaP (110) and Cu-Phthalocyanine overlayers studied by ellipsometry, Applied Physics A Solids and Surfaces. 31 (1983) 75-80

In this paper, the substrate of nano-pillar forest structure whose density is controllable was fabricated.
A large area silicon nano-pillar structure, which is the nano-pillar forest structure, is obtained by making use of the structure of the nanoparticles as the anisotropic etching mask substrate (as shown in Figure 1 (c)).
Now, the silicon nano-pillar forests structure (Figure 1 (d)) is left without any chemical pollutants, and the corresponding SEM result is shown in Figure 2 (b).
The intensity of the signal has relation with both the concentration and the density of nano-Au-pillar on the surface of the nano-structure.
Journal of Electro analytical Chemistry, 1977,84(1):1-20 [3] S Nie,and SR Emory,Science,1997,275, pp.1102–1106 [4] S.

Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russia 3Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia akhark.anton@mail.ru The real and imaginary parts of magnetic permeability at the three frequencies 100 Hz, 1 kHz and 10 kHz and magnetic moment in magnetic field H = 0.05 T in the Sm0.25Mn0.75S solid solutions at the temperatures 5 K – 300 K were measured.
A competition between ferro- and antiferromagnetic interactions can give rise to a new magnetic structure.
Magnetization behavior under external magnetic field confirms in terms of nonuniform magnetic structure.
These effects are explained in term of a nonuniform magnetic structure, consisting of domain with canted antiferromagnetic.
These effects are explained in term of a nonuniform magnetic structure, consisting of domain with canted antiferromagnetic.

Test and analysis of micro-hardness The crack, softening and other defects are often found at HAZ, in order to understand more about the welding discipline of 30CrMnSiA steel after final thermal treatment, and identify its structure, crack and degree of softening, take samples at the crossing face of each welding piece, find out the micro-hardness of each point, and draw out the hardness curve (Fig.1).
(a) (b) (c) Fig.2 The HAZ metallographic structure after welding (a) Test piece 1 (b) Test piece 2 (c) Test piece 3 ) The structure of the three test-pieces are very similar, they are all T+M structure, the grain size of Test-piece is the smallest, its HAZ has the best mechanical property and the lowest cold-cracking tendency.
The metallographic structures of the three test-pieces are shown in Fig 2.
[2] Li Yajiang.Welding of Special and Hard-to-weld material[M].Beijing :Chemistry Press, 2003

Rietveld4 who showed (in 1967-1969) how it is possible to arrive at the (refined) crystal-structure parameters from a measured powder diffraction pattern containing (many) overlapping reflections, on the basis of an (assumed) profile-shape function.
This rise to maturity can for example be illustrated by recognizing that a first crystal-structure determination of the new class of superconductors was achieved by (neutron) powder (Rietveld) diffraction analysis6.
We have been witness of and participant in the resurgence of powder diffraction since 1970 as a major tool of research in the physics and chemistry of the solid state.
Rietveld, A profile refinement method for nuclear and magnetic structures, J.Appl.Cryst., 2. 1969, 65-71. 5.
Tournier, Structure of the 100 K Superconductor Ba2YCu3O7 between (5 + 300)K by Neutron Powder Diffraction, Europhys.Lett., 3., 1987, 1301-1307. 7.

Synthesis and characterization of a new thermosetting boric acid ester Jian Zhang1, a, Jia Liu 2,b 1,2Xi’an University of Technology Department of Applied Chemistry, Shanxi,China azhangjian@xaut.edu.cn,bpodorliujia@gmail.com Keywords: boric acid ester; thermosetting; antioxidant; high temperature Abstract.
Structure, hydrolytic stability, curing properties and and thermal properties of the boric acid ester were studied by FT-IR, DSC and TGA.
Results and discussion Structure of TBSE The FT-IR spectra of TBSE are shown in figure 2.
In addition, according to the infrared spectra and mechanism of esterification reaction, we speculate that structure of TBSE may be consistent with what we designed.
Instead, the introduction of TBSE reduces the weak bond structure, in other words, it improves the thermal stability and residual decomposition rate of the material.

The structure of the hyperbranched macromolecule was determined by FTIR and 1HNMR.
Triphenylene derivatives was well-known DLCs for their chemistry accessibility and chemical stability, which have been extensively studied for their synthesis, alignment, one-dimension conductivity and photoconductivity, its charge carrier mobility can be 10 -3 magnitude [6-9].
Structures of all materials synthesized were verified using 1HNMR. 1HNMR spectra were measured in CDCl3 on a Brucker DMX-400 400MHz NMR spectrometer.
Results and discussion Synthesis The proposed structures of the intermediates and the final polymer HBTP have been verified using 1HNMR and IR spectroscopy.
The chemical structures were verified by using IR and 1HNMR spectra.

ZnS nanoparticles with sphalerite structure are successfully assembled on the surface of CNTs/Fe3O4 nanocomposites.
Carbon nanotubes (CNTs) have attracted much attention for their unique structure and outstanding electrical, chemical and mechanical properties.
Characterization details Structure of the as-synthesized nanocomposites was investigated by X-ray diffraction (XRD) (Cu Kα source, λ=0.154056 nm).
Results and discussion Morphology and structure.
Inorganic Chemistry. 46(2007),p. 5343