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Research in surface modification and anti-fouling of polypropylene porous membrane Chaolin Miao1,a,Hui Wang1,b 1College of Chemistry and Chemical Engineering, Xinxiang University, Henan Xinxiang 453000,China aEmail:xiaomiao777@126.com, bemail:wyzhui19@163.com Key words: polypropylene porous membrane; surface modification; flux; BSA adsorption; membrane fouling Abstract: Surface modification of microporous polypropylene membrane was performed by grafting polymerization of acrylamide.The morphological and microstructure changes of the membrane surface were confirmed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and atomic force microscopy.
This paper discusses the modified membrane surface structure, contact Angle and water absorbing capacity, water flux, protein adsorption and pollution-resistant ability.

The porous ceramics have been widely used in the field of metallurgy, building materials, biological chemistry, food and beverage industry, environment protection, and so on [4, 5].
The effects of diverse processing conditions on structure and properties of porous wollastonite ceramics are investigated through series of experiments.

Table 1 The chemical composition of starting material Element Zn Al The rest Content/% 12.25 75.88 11.87 The experiment is carried out with equipment made up of vacuum furnace, as shown in Fig. 3. 1-Vacuum furnace top; 2-Furnace body; 3-Furnace bottom; 4-Water cooled electrode; 5-Condenser; 6-Sightglass; 7-Thermal insulating layer; 8-Graphite heater; 9-Crucible; Fig.3 Internal structure schematic diagram of vacuum furnace Operating process The starting material is 15 gram per run and its thickness in crucible is about 6 mm.
Chinese Journal of Inorganic Chemistry Vol.17(2001), p.735.

Synthesis and Photochromic Properties of Diarylethene 1-[2-methyl-5-(4-trifluoromethylphenyl)-3-thienyl]-2-[2-methyl-5-(3-fluoro-4-chloro)phenyl-3-thienyl]perfluorocyclopentene Dandan Xue, Chunhong Zheng* and Shouzhi Pu Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.
The structure of compound 1o was confirmed by 1H NMR (400 MHz, CDCl3): δ 1.90 (s, 3H, –CH3), 1.91 (s, 3H, –CH3), 7.16 (s, 1H, thiophene–H), 7.17 (s, 1H, thiophene–H), 7.19–7.27 (m, 3H, benzene–H), 7.55–7.59 (m, 4H, benzene–H).

Residual strength of thermally loaded mortars with treated Municipal Solid Waste Incineration fly ash used as Supplementary Cementitious Material Martin Keppert1, a*, Kirill Polozhiy1, 2, b 1 Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Praha 6, Czech Republic 2University Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 273 43 Buštěhrad, Czech Republic amartin.keppert@fsv.cvut.cz, bkirill.polozhiy@fsv.cvut.cz Keywords: MSWI, fly ash, SCM, cementitious composites, compressive strength, bending strength, thermal load.
Acknowledgement This research has been supported by the Czech Science Foundation under project GBP105/12/G059 “Cumulative time dependent processes in building materials and structures”.

Spectrophotometric method for the assay of aspirin Yanhong Lei College of chemistry, Jiujiang University, Jiangxi,Jiujian,332005,china lei_4300@163.com Keywords: UV-spectrophotometry; aspirin;drug analysis.
Many methods used to measure aspirin in existing literature reports, the methods include spectrophotometry , atomic absorption method, chromatography and the use of other the analysis method and so on Aspirin had fixed structure shown in table 1 .

Fig. 3: Structure of typical photoresist components PMMA (left) and Cyclopentanoen (right) and all bonds, which can be directly cracked by 172nm radiation, indicated by a double line.
Hesse et. al., Spectroscopic Methods in Organic Chemistry, 2nd Ed.

Microstructure of Ti 6-4 0-25 micron with carbon addition 0% left and 1% right Chemistry The content of the main interstitial elements was measured on sintered tensile bars.
It is likely that the finer grain structure improves ductility and counteracts the effect of TiCs.

Introduction Surfactants effectively affect the structure of cement stone.
Tolbert et al., Phase transitions in mesostructured silica/surfactant composites: Surfactant packing and the role of charge density matching, Chemistry of materials, 13(7) (2001) 2247-2256

Figure.1 Basic structure of Hydrazone (Hz) 2.2 Corona Poling A corona is a self-sustainable discharge occurring if a sufficiently high voltage is applied to asymmetric electrodes such as a point and a plate.
[7].B.S Furniss, A.J Hannaford, P.W.G.Smith, A.R.Tatchell, Vogel’s Textbook of Practical Organic Chemistry.