Gansu Research Institute of Chemical Industry

Lanzhou, China

Gansu Research Institute of Chemical Industry

Lanzhou, China
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Zhang P.,Gansu Research Institute of Chemical Industry | Chen W.,Northwest Normal University | Yang W.,Northwest Normal University | Li C.,Gansu Research Institute of Chemical Industry | Liu Y.,Gansu Research Institute of Chemical Industry
Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics | Year: 2011

3,3',5,5'-tetramethyl-di(2-hydroxyethanyoxy)-biphenyl was synthesized from 3,3',5,5'-tetramethyl-diphenol and 2-chloroethanol and then, the resultant was taken as a precursor to further prepare a symmetrical epoxy resin containing biphenyl structure-4,4'-bis (2-hydroxylethyl)-3,3',5,5'-tetramethylbiphenyl (BP1)-via epichlorohydrin method. The structure, morphology and non-isothermal curing behavior of BP1 were characterized by Fourier transform infrared spectroscopy (FTIR), hydrogen nuclear magnetic resonance ( 1H-NMR), scanning electron microscope(SEM) and differential scanning calorimetry(DSC). The results show that 4,4'-diaminodiphenylmethane(DDM) is a curing agent more appropriate for BP1 than p-phenylenediamine. The toughness of BP1 is improved greatly after the addition of the curing agents.


Zang L.,Lanzhou University | Luo J.,Lanzhou University | Guo J.,Lanzhou University | Liu H.,Gansu Research Institute of Chemical Industry | And 2 more authors.
Polymer Bulletin | Year: 2010

Vermiculite (VMT) was readily intercalated by hexadecyl trimethyl ammonium bromide to yield organo-vermiculite (OVMT), which was confirmed by X-ray diffraction measurement and Fourier transform infrared spectroscopy. Poly(ethylene glycol)/organo-vermiculite (PEG/OVMT) nanocomposites were prepared by using the direct melt intercalation method, and its intercalation state was confirmed by transmission electron microscope. Thereafter, a lithium salt was dissolved in the PEG/OVMT nanocomposites to prepare composite polymer electrolytes. The highest conductivity was 2.1 × 10 -5 S cm -1 at room temperature, which was obtained by AC impedance analysis when the amount of OVMT based on PEG was 1 wt%. © 2010 Springer-Verlag.


Yang M.,Gansu Research Institute of Chemical Industry | Wang W.,Gansu Province Environmental Monitoring Center | Liu Y.,Gansu Research Institute of Chemical Industry | Feng L.,Gansu Research Institute of Chemical Industry | Ju X.,Gansu Research Institute of Chemical Industry
Chinese Journal of Chemistry | Year: 2015

A novel three-component strategy for the azidotrifluoromethylation of alkenes has been presented here. The reaction proceeded smoothly under gentle temperature and gave the bifunctional olefins in high yields. Furthermore, 1,3-dipolar reactions between azide-containing products and phenylacetylene revealed great potential in molecular modification by using this method. The intermolecular azidotrifluoromethylation of alkenes under copper catalysis is presented here. The reaction proceeded smoothly under gentle temperature, which gave the bifunctional olefins in high yields. Furthermore, 1,3-dipolar reactions between azide-containing products and phenylacetylene revealed great potential in molecular modification by using this method. © 2014 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Chen W.,Northwest Normal University | Liu Y.,Northwest Normal University | Zhang P.,Gansu Research Institute of Chemical Industry | Zhang Y.,Northwest Normal University | Wei T.,Northwest Normal University
Chinese Journal of Organic Chemistry | Year: 2011

Four symmetrical diphenylnate liquid crystals were prepared and their structures were confirmed by FT-IR and 1H NMR spectra. Their liquid crystal properties were tested by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and hot stage polarizing microscop (POM). The crystal structure of IIIa was detemfined by X-ray single crystal diffraction techniques. IIIa is a monoclinic crystal system, space group P2x/c with the unit cell parameters: a= 18.525(3) Å, 6=12.196(2) Å, c= 12.195(2) Å, β= 97.142(2)°, V=2733.7(9) Å3, Z=4, D C=1.1263 Mg/m3, R=0.0521, Rw=0.1161. The results showed that molecules lead thermotropic liquid crystals properties. The relations among the mesomorphism, oxygen atoms, terminal unsaturated bond, the flexible chain length were investigated.


Wang L.,CAS Lanzhou Institute of Chemical Physics | Dong S.,CAS Lanzhou Institute of Chemical Physics | Zhang Z.,CAS Lanzhou Institute of Chemical Physics | Wang Y.,Northwest Normal University | And 4 more authors.
Chinese Journal of Chromatography (Se Pu) | Year: 2016

A simple preparation method for β-cyclodextrin-silica hybrid chiral stationary phases was developed. Firstly, the β-cyclodextrin-silica derivative was synthesized by the reaction of 3-aminopropyltriethoxysilane and monochlorotriazinyl β-cyclodextrin under weak base condition. Spherical β-cyclodextrin-silica hybrid materials with β-cyclodextrin in the surface of pores by covalent bonding were prepared using 1,2-bis(triethoxysilyl) ethane and the β-cyclodextrin- silica derivative under the alkaline condition by one-step polymerization reaction. The β-Cyclodextrin-silica hybrid chiral stationary phases could be directly used as high performance liquid chromatographic packings after the template removal. The hybrid materials prepared in this paper possessed regular spherical morphology, good monodispersion, high specific surface area, good mechanical property, high chemical stability and simple preparation process. It combined the chiral recognition performance of β-cyclodextrin and the outstanding performance of organic-inorganic hybrid material. The effect of the composition, ratio and pH of mobile phase on chiral separation was investigated, and the best chiral separation conditions had been optimized. The baseline chiral separations for five chiral compounds were obtained under the optimal conditions. The results of enantioseparation showed that the hybrid chiral stationary phases had favorable chiral recognition ability. Compared with the traditional preparation process of chiral stationary phases, a new thought for new type of chiral stationary phase is provided by the present method in this paper. © 2016 Science Press.

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