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The dehydration between silicon dioxide particles can make it form net-structure, and the silicon dioxide particles can also miscible with organic polymer[1], therefore, nano materials usually have wide applications in fiber, fabric, rubber, paint, ceramics, coating, fine casting, fire-proof material, papermaking, petroleum chemical industry and electronic industries, etc[2-4].
However, with the rise and developments of metal surface treatment, chemistry-mechanical polishing and inorganic polymer coatings, the demand for large particle size nano-silica dioxide increases largely.

The modification of mesoporous silica SBA-15-type with PEG YuYuan Zhi1,2,a, Lei Zu3,b ,Kai Gu1,c, HuiQin Lian1,d, XiuGuo Cui1,e* 1Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing Key Lab of Special Elastomer Composite Materials, Beijing 102617, China 2College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China 3Department of Chemistry, Yanbian University, Yanji 133002, China azhiyuyuan@126.com, bzulei@bipt.edu.cn, cgukai@bipt.edu.cn, dlianhuiqin@bipt.edu.cn, ecuixiuguo@bipt.edu.cn Keywords: Polyethylene glycol; Mesoporous silica; Sulfonation; Modification Abstract.In this study, first we prepared SBA-15 and sulfonate bearing SBA-15-SO3H.Then we modified the mesoporous silica with PEG to get SBA-15,SBA-15-SH,SBA-15-SO3H,SBA-15-PEG and SBA-15-SH-PEG.The samples were tested by FT-IR, nitrogen adsorption–desorption and TG.
Both samples exhibit type IV isotherms with H1 hysteresis loops, which is the typical characteristic of cylindrical-like pore structure.

Box 124, SE-221 00 Lund, Sweden 2 Department of Materials and Surface Chemistry, Chalmers University of Technology, SE412 96 Göteborg, Sweden 3 Institut für Nukleare Festkörperphysik, Universität der Bundeswehr München, D-85577 Neubiberg, Germany Keywords: polymer, azo-benzene, isomerization, free volume, low-energy positron annihilation lifetime Abstract.
Such large changes of the structure in the range of a few Å are expected to change the free volume properties of the polymer in the vicinity of the Azo-benzene group.

Structured questionnaires were administered to 200 residents in selected residential areas.
E-Journal of Chemistry. 7 (S1): S245-S254

Synthesizes and Properties of 1-[2-methyl-5-(4-methoxyphenyl)-3-thienyl]-2-[2-methyl-5-(3-methoxy-4-formyphenyl)-3-thienyl] perfluorocyclopentene Fang Duan, Xue Li, Gang Liu * and Shouzhi Pu Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal University Nanchang 330013, P.
The structure of compound 1o was characterized by 1H NMR spectroscopy.

Koroleva3, f 1Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russian Federation 2Institute of Physics PAS, Lotnicow al., Warsaw 02668, Poland; 3M.V.
Then the structures were placed in vacuum ampoules with pieces of arsenic and ZnAs2 for compensating saturated vapor pressure and to save initial thickness of ZnAs2.

Reactivity and Processability of the Hydrolyzing Silane Systems Haixia Qi*, Yubao Zhang Department of Chemistry, Nanchang University, 999 Xuefu Road, Honggutan New District, Jiangxi 330031, People’s Republic of China hxqi@ncu.edu.cn Keywords: metal corrosion inhibition; hydrolyzed silane systems, reactivity, processability, conductivity determination; Abstract.
This film with dense crosslinking structure physically excludes the water molecules and the other corrosion species at metal-organosilicone interface.

Kim2 1 School of Materials Science and Engineering, 2 Department of Chemistry, Inha University, 253 Yonghyun-dong, Nam-ku, Incheon 402-751, Republic of Korea Keywords�� � � titania/silica, photocatalyst, solvent effect, sol-hydrothermal process.
In the present study, the effect of the embedded silica content and the composition of the solvent systems on the particles size, surface area and crystal structure of the TiO2 particles prepared by hydrothermal synthesis from titanium isopropoxide were investigated.

Samples of the alloy were solution-treated at 810℃ in a box furnace for 1 hour followed by water quenching to retain complete β structure at room temperature.
Materials Chemistry and Physics 76 (2002) 191–197 [9] A.W.

Traditionally, these conversion coatings were based on chromium chemistry.
The potential was scanned at a rate of 0.5 mV/s and scanning ranged from -1.3 V to-0.3 V. 3 Results and discussion 3.1 Coating structure and component Fig.1 Photo of specimen with conversion coating The photo of the sample after the formation of the golden conversion coating is shown in Fig.1.