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Enhancing Properties of Deproteinized Natural Rubber with Rice Husk Ash Silica for Use as A Dental Material Thanunya Saowapark1,a, Ukrit Amphaiphan2, Ekrachan Chaichana1 and Panjaporn Wongwitthayakool3 1Reasearch Unit of Agriculture Residue Products and Biomaterials, Chemistry Program, Facaulty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand 2Public Health Health Program, Facaulty of Science and Technology, Nakhon Pathom Rajabhat University,Nakhon Pathom, 73000, Thailand 3 Facaulty of Dentistry, Thammasart University, Pathumthani, 12121, Thailand aemail: bbiirrddtt@hotmail.com Keywords: Silica; Rice husk; Natural rubber; Deproteinized natural rubber; Viscoelastic properties Abstract.
WRA was then investigated for its composition and structure with X-ray fluorescence (XRF) and X-ray diffractometer (XRD).
The results showed that WRA contained a large amount of silica (90%) with amorphous structure.

For fullerenes, C60 is the most stable form of C60 nanomaterial, which has twenty hexagons and twelve pentagons in its truncated icosahedron structure.
Two sections follow a brief introduction to carbon nanoparticles and their structures and characteristics.
As a result of their well-structured atomic and mesoscopic structure, carbon nanomaterials offer excellent conductance.
Fullerenes' chemical structure and surface functionalization affect their friction, wear, and toxicity.
Precision particle production and improved surface chemistry management are excellent ways to improve tribological performance in numerous domains.

The interloping structure give more porosity to the knitted fabric and directly affect the air permeability value of the fabric.
Banin, Improved antibacterial and antibiofilm activity of magnesium fluoride nanoparticles obtained by water-based ultrasound chemistry, Nanomedicine: NBM. 8(2012) 702-711, doi: 10.1016/j.nano.2011.09.002
Esposito, “Traditional” sol-gel chemistry as a powerful tool for the preparation of supported metal and metal oxide catalysts, Materials, 12(2019) 668, doi: 10.3390/ma12040668
Souza, Sulphate Flavonoids: Biosynthesis, structures, and biological activities.
Mikucioniene, Effect of inner layer structures of weft-knitted spacer fabrics on thermal insulation and air permeability.

The incorporation of rare earth metals with low (La 3+, Gd3+) or variable (Pr 3+/4+) valency into these systems is expected to stabilize their structures and increase the oxygen mobility because of the formation of oxygen vacancies [1].
The structure of all studied complex oxide systems were of the fluorite type which is described in detail elsewhere [3, 12].
Nevertheless, this does not exclude or contradict nanodomain structure in this system [1, 3].
Their catalytic performance can be tuned over a broad range by changing the type and content of a dopant, which affect the real structure and surface properties of these systems controlling the supported Pt dispersion and oxygen mobility.
StructChem 2006 (Structural Chemistry of Partially Ordered Systems, Nanoparticles and Nanocomposites), June 27-29, 2006, St.

a*balki2009@yahoo.com, bvisvabalu@yahoo.com, cgmreddy_dmrl@yahoo.co.in Keywords: Ferrous metals and alloys, Sandwich structures, Impact and ballistic, HF, Microstructure.
Fine continuous epitaxial growth of austenitic matrix from PM and good anchoring of acicular ferrite and bainite like structure seen in LHF layer were clearly visible in this microstructure.
Corse bainitic structure and ferritic phases were visible in the HAZ microstructure (Fig. 3 h), while PM contained the acicular martensite and retained austenitic phases, as shown in Fig. 3 i.
At the LHF capping front layer, the deformed acicular ferrite structure is clearly visible in Fig. 4 f.
The gradual increment in hardness could be attributed to the dilution effect of LHF capping front layer deposition and alloy chemistry of LHF filler.

Silicone-modified Butyl Acrylate-Methyl Methacrylate Copolymer Latex: effects of coupling agents Ye Han1,a, Xinwen Li1,b, Zhenguo Liu2,c, Huixuan Zhang1,2,d 1Changchun University of Technology, Changchun 130012, China 2 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 ahy@mail.ccut.edu.cn, blixw@mail.ccut.edu.cn, cliuzg@mail.ccut.edu.cn, dzhanghx@mail.ccut.edu.cn Keywords: Semi-continuous emulsion polymerization, coupling agents, Silicone-modified, Adhesive strength Abstract：Silicone-modified butyl acrylate-methyl methacrylate copolymer latex was prepared via semi-continuous emulsion polymerization with different coupling agents.
Due to widely different chemical structure and polarity of acrylates and siloxane, silane coupling agent was needed to be added.

The nonlocal elasticity theory causes the SWCNT becomes more flexible and reduce the stiffness of this structure.
Lechuga, Trends in Analytical Chemistry 25 (2006) 196

Impact Abrasive Wear Resistance of High-Chromium Cast Iron Bars Reinforced Hadfield Steel Matrix Composite Libin Niu1,a, Wangchang Sun1,b and Mirabbos Hojamberdiev2,c 1College of Material Science and Engineering, Xi′an University of Science and Technology, Xi’an 710055, P.R.China 2Institute of General and Inorganic Chemistry,Uzbekistan Academy of Sciences,Tashkent 100170,Uzbekistan aemail: HHlibinniu123@yahoo.com.cnHH, bemail: HHdy059@126.comHH, cemail: HHdy059@163.com Keywords: Composites; Impact Toughness; High-Cr Cast Iron; Impact Wear Abstract.
Fig.1 Plane-view light micrograph of the water-quenched composite (a), SEM morphologies of the water-quenched composite (b), reinforced bar region (c), and Hadfield steel matrix region (d) The microstructure of the reinforced bar region (A frame in Fig.1b) is shown in Fig. 1c, it is a typical hypoeutectic high-Cr cast iron structured with residual austenite, martensite matrix, and eutectic carbides M7C3, which are lath/particle shape and discontinuous net distribution [4].

Activated carbon (AC) has been proven to be an effective adsorbent for the removal of a wide variety of organic and inorganic pollutants dissolved in aqueous media because of its huge specific surface area and well-developed pore structures.
The AC surface chemistry can be changed by treating or impregnating them with oxidizing agents either in gas phase or in aqueous solution.

Structure and performance of MCMB sinters doped with different TiC granularities[J].
Journal of Fuel Chemistry and Technology, 2010, 38(5) :604-609 [8] H.