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Bakare 2 1University of Benin, Department of Chemistry and Centre for Biomaterials Research, Benin City 2Rubber Research Institute of Nigeria, End-Use Division, P.M.B. 1045, Benin City.
On account of their low molecular weight and lack of network structures with adequate rigidity and strength required in engineering materials [1], vegetable oil-based polymers are synthesized using the functionalized and/or modified derivatives [2,3].
Table 2: Comparative properties of some biofibres with conventional synthetic fibres [11] Fibre Density (g/cm3) Tensile strength (MPa) Elongation at break (%) Cotton 1.5 - 1.6 287 - 800 7.0 - 8.0 Jute 1.3 - 1.45 393 - 773 1.16 - 1.5 Flax 1.50 345 - 1100 2.7 - 3.2 Sisal 1.40 468 - 640 3.0 - 7.0 E-glass 2.50 2000 - 3000 2.5 carbon 1.7 4000 1.4 - 1.8 Chemical structure of natural fibres also affect the properties considerably [11].

Plasma nitriding provides better control of case chemistry and uniformity.
By standard regression techniques, the values of n can be described in terms of a Norton’s Law (Eq. 1) [9]: , (1) where B is the structure-dependent constant and σ is the applied stress.
By heating maraging 300 steel during 25 h at 560 ºC, a structure containing 30% of austenite is obtained [3].

It is well known that the structure of wood fiber is very complicated, whether alkaline or silane solution does not have any effect the inside structure of wood fiber.
Bakraji, N.Salman: Radiation Physics and Chemistry. 66 (2003), p. 49

Experimental The Atmospheric Ellipsometry Porosimetry is a method for evaluation of pore structure of low dielectric constant films in advanced microelectronics.
In order to compare different mesoporous structure of TiO2, various thermal treatments are applied from a TiO2 thin film reference obtained by Evaporation Induced Self-Assembly.
Sanchez., Journal Material Chemistry, 2006, 16, 77-82.

These require fairly high sintering temperatures (> 1400 oC), and the structures and properties of the complex perovskites are proving difficult to predict, and depend strongly upon the degree of ordering [4].
The transition metal columbite niobates sinter between 1100- 1200 oC, much lower than the perovskites [6,7,8], and Q of the columbite niobates is higher than that of the M2+Ta2O6 compounds, which do not have the columbite structure [7].
As niobium is so much cheaper than tantalum, and because the chemistry of the binary compounds should be easier to investigate than that of the complex perovskites, a study was made of these binary niobates, and these results have been previously reported [9], along with investigations into the effects of using dopants in an attempt to lower the τf of these niobate compounds [10].

DEAEMA(2-diethylaminoethyl methacrylate) has the similar structure with DMAEMA.
And the bacteria repellency of the grafted silk had good washing durability.The described method affords a wide scale of graft copolymers with DEAEMA and grafts of various density, length and chemical structure, having expectedly various application and mechanical properties.
Part A: Polymer Chemistry Vol. 44(2005), p. 1214 [3] T.L.

Cubic boron nitride (CBN) is the boron nitride with grain isomers, its structure is similar with diamond, with the hardness up to 8000~9000HV, heat-resistant degree up to 80~14℃ and good abrasion resistance.
The diamond tool is not suitable for machining steel materials, Because of a strong chemistry affinity for diamond and iron, at high temperatures, iron atoms interact with carbon atoms will lead to graphite structure, the cutting tool tends to be damaged easily.

Electrical and Electrochromic Characterization of Poly(ethylene oxide )/Molybdenum Doped Vanadium Pentoxide Films JIN Ai Ping1, a *, CHEN Wen 2, b and ZHU Quan Yao2, c 1School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 40073, China 2 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China aemail: jinaiping2000@163.com, bemail: chenw@whut.edu.cn, cemail: cglamri@whut.edu.cn Keywords: Molybdenum Doped Vanadium Pentoxide, Poly(ethylene oxide), Films, Conductivity, Electrochromism Abstract.
As a host material for a wide variety of metal cations, molecules and larger molecules, vanadium pentoxide (V2O5) xerogel with a very reaction layered structure and n-type semiconducting properties have drawn great attention over the past two decades.
In the first instance, (V0.975Mo0.025)2O5∙nH2O sol was synthesized by hydrothermal reaction and the successive direct intercalation of PEO inside the (V0.975Mo0.025)2O5∙nH2O host structure in the second instance.

Preparation, Characterization and Decolorization Performance of Magnetic Fe–Mn Binary Oxide with High Surface Area Zhigang Jiaa, Kuankuan Pengb, Yanhua Lic, Rongsun Zhu School of Chemistry and Chemical Engineering, Anhui University of Technology, No. 59 Hudong Road, Ma’anshan 243002, Anhui Province, PR China azjchemyue@126.com,bpkk@ahut.edu.cn, clyh@ahut.edu.cn Keywords: Magnetic Mesoporous Material, Binary Oxide, Decolorization, Catalytic Property.
The mesoporous material showed large surface area (up to 272 m2 g-1), well-defined nanoporous structure, 3D micro/nanocomposite structure and controlled morphology.

Morphology of (a) RRH, (b) TRH and (c) RHAC As can be seen in Fig. 2(c), carbonization process caused the formation of many fine pores in the interior structure of RHAC.
These well-developed pores increase the surface area and enhance the porous structure of rice husk-based activated carbon [11, 14].
Hoding: Materials Chemistry and Physics Vol. 78 (2002) p 132-137