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Both polymers were completely insoluble in common organic solvents and retained partial crystal structure of monomers as indicated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses.
These results showed that replacement of oxygen by sulfur in the monomer structure played an important role on the properties of polymers.
Scheme 1.The structure of dibromothiophene monomers.
FT-IR Spectroscopy FT-IR spectra of solid-state polymerized PEDOT and PEDTT materials demonstrate similar structure for each other as shown in Fig. 1.
The plant surface on large magnification may be attributed to the slowly polymerization rate of dibromo monomer which could lead to the formation of polymer with relatively regular structure.

Most natural biomaterials have hierarchically ordered structures and can be harvested in large amounts at low costs.
The complex structures of natural materials offer significant opportunities forreplication with synthetic materials.
The crystallinity, morphology, and structure of product are illuminated.
The sheets structures of the sample is about 80-100 nm in thickness which could be observed from the fig.2(b).
The CeO2 product with the specific surface area of 113.5 m2/g and porous structures with pore size ranging from 2 to 10 nm.

Because functionality of macromoleclar polymer generated in the process of different monomer polymerization , its structure could be linear structure or reticular structure.
In the molecular structure of TPGDA and NPGDA ,there are branched chain alkyl , disorderly molecular structure and bigger space occupied.
The volume shrinkage of polymer molecular structure after polymerization is smaller than before.
Their overall structure change smaller reaction and the volume contraction is smaller.
References [1] Wu Jian wei ,Zhao Yuyu ,Zhao Hanqing .Study on Shrinkage of UV- curing Adhesives[J]．Chemistry and Adhesion, 2005(2):96-100

Niewa3 1South Ural State University, Chelyabinsk, Russia 2Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow Region, Russia 3Institute of Inorganic Chemistry, University of Stuttgart, Stuttgart, Germany denisvinnik@gmail.com Keywords: barium hexaferrite, crystal growth, lead substituted barium hexaferrite, magnetism, crystal structure.
Synthesis method a [Å] c [Å] V [ų] TC [°C] [30] 5.893 23.194 697.5 - [31] - - - 457 1 [26] Na2CO3 flux 5.8929(4) 23.194(2) 697.54(6) 455 2 PbO flux 5.8962(4) 23.1927(13) 698.28(6) 448 Powder X-ray diffraction proofs the well known magnetoplumbite type crystal structure and phase purity of the samples obtained.
For the composition Ba0.77(2)Pb0.23Fe12O19the substitution has only a negligible influence on structure and Curie temperature.Thus, PbO can be used as flux for Fe substituted hexaferrite materials.
Perrotta, The crystal structure and refinement of ferromagnetic barium ferrite, BaFe12O19, Z.

The properties were correlated with molecular and supermolecular structure of the samples.
Molecular structure was assessed by such as infrared microspectroscopy (IR), supermolecular structure by differential scanning calorimetry (DSC), and local properties by both non-instrumented microindentation hardness testing (MH) and instrumented microindentation hardness testing (MHI).
From the point of view of the molecular structure, the three investigated samples were expected to differ only in their molecular weight: Mw(PE1) < Mw(PE2) < Mw(PE3).
Table 2: Supermolecular structure of UHMWPE samples.
Balta-Calleja, From the glassy state to ordered polymer structures: A microhardness study.

When conducting bonded repairs on structures, it is important to consider that the strength of the bond should not fall below that of the surrounding structure.
Typical composite surface treatments include traditional abrasion/solvent cleaning techniques for thermoset composites, whereas thermoplastic composites require surface chemistry and surface topographical changes to ensure strong and durable bond strength.
Rivets are usually unnecessary in lightly loaded bonded structures because they can never experience any load even after the structure has been damaged.
Tuvey, Composite Structures, vol. 32, pp. 217-226, 1995
Sterkenburg, “Development of Improved Hybrid Joints for Composite Structures,” Composite Structures, vol. 35, pp. 1-20, 2005

Microencapsulation of Styrene/epoxydiacrylate via In Situ polymerization of Melamine-formaldehyde Haiping Wang School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, P.
The chemical structure of microcapsule was identified by Fourier transform infrared spectroscopy (FT-IR) and proton magnetic resonance spectroscopy (1H-NMR), respectively.
Microcapsules are widely used in a number of diverse applications ranging from electronic inks, food additives, coatings to pharmaceuticals in virtue of their special structure [1].

It was found that the structures between the joining interfacial layers were similar.
The scanning electron microscope (SEM) showed that the structure of the ATG can be divided into three layers; glass body, binder, and coated metal [10], as shown in figure 1.
Paul, in: Chemistry of Glasses, Chapman and Hall Ltd., N Y (1982)

The electron diffraction (ED) pattern shows broad halos due to polymeric matrix and the sharp rings from the Au crystallites are consistent with the cubic-close-packed structure of Au (Inset in Fig- 1).
The crystalline nature of the Au nanoparticles is also clearly reflected in the Au LIII XANES spectra shown in Fig-2, which show a high degree of similarity to the spectrum of Au foil used as a reference for bulk gold structures.
Using polarized SR on single crystal samples, which allows the identification of different orientations of chemical bonds, Smith et al 9 have provided an excellent basis for the assignment of the different structures in S K-XANES spectra of photographic materials which involves S-Au or S-Ag bond.
The considerable intensity of the additional structure in the spectrum indicates a high yield of S-Au bond formation, indicating that each gold particle is most likely connected to the polymer via several bonds.
This study is significant for the reason that it can be extended to incorporate other nanoparticles such as Pd, Pt, Ag, Cu etc having strong affinity for thiols possibly leading to development of new types of Merrifield resins which can be used in solid phase synthesis in general and combinatorial chemistry in particular.11 Since polymeric beads with various functionalities such as COOH are commercially available, it is also possible to incorporate magnetic nanoparticles such as Co having strong affinity for such functional groups onto polymeric beads.

Structure-Property Relations in xCuO-(1-x)As2O3-0.7B2O3 (0.01≤x≤0.05) Glasses by Magnetic Susceptibility Measurements, IR and EPR Spectroscopy B.
Gopinath Department of Chemistry, Pondicherry University, Pondicherry - 605014, India a Email:das_b_b@yahoo.com Abstract.
Studies on xCuO-(1-x)As2O3-0.7B2O3(0.01≤x≤0.05) (G1-G5: x = 0.01, 0.02, 0.03, 0.04, 0.05) glasses were done using varieties of structure sensitive techniques.
In the case of systems containing boron trioxide [7,8], B2O3, and arsenic trioxide [9,10], As2O3, because of the structural complications involving the different units forming the network, it is interesting to study the structure-property relations of such systems.